Consolidated Document number 06/VBHN-BXD stipulating the classification of construction projects and guiding its application in investment construction management activities.

CIRCULAR

REGULATIONS ON THE CLASSIFICATION OF CONSTRUCTION PROJECTS AND GUIDELINES FOR APPLICATION IN THE MANAGEMENT OF INVESTMENT CONSTRUCTION ACTIVITIES

Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on the classification of construction projects and guidelines for application in the management of investment construction activities has been amended and supplemented by:

1. Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on the classification of construction projects and guidelines for application in the management of investment construction activities;

2. Circular No. 09/2025/TT-BXD dated June 13, 2025, of the Minister of Construction amending and supplementing certain articles of circulars under the State management of the Ministry of Construction related to organizational restructuring, implementation of two-level local administration, and decentralization to local authorities.

Pursuant to the Law on Construction dated June 18, 2014; the Law Amending and Supplementing Certain Provisions of the Law on Construction dated June 17, 2020;

Pursuant to the Law on Architecture dated June 13, 2019;

Pursuant to the Government Decree No. 06/2021/NĐ-CP dated January 26, 2021 detailing certain provisions on quality management, construction works, and maintenance of construction projects;

Pursuant to Decree No. 15/2021/ND-CP dated March 3, 2021 of the Government detailing certain contents regarding project management of investment construction;

Pursuant to Decree No. 81/2017/NĐ-CP dated July 17, 2017 of the Government stipulating the functions, tasks, powers, and organizational structure of the Ministry of Construction;

At the proposal of the Director of the National Construction Quality Supervision Agency;

The Minister of Construction promulgates this Circular on the classification of construction projects and guidelines for applying project classification in the management of investment construction activities.[1]

Article 1. Scope of Regulation and Applicability

1[2]Scope of Application

This Circular provides detailed regulations on the classification of construction projects and guidelines for applying project classification in managing investment construction activities as stipulated in the Construction Law; specifically, Article 5, Clause 4 of the Construction Law 2014, amended and supplemented by Clause 3, Article 1 of the Law Amending and Supplementing Certain Provisions of the Construction Law 2020 and Clause 2, Article 3 of Decree No. 06/2021/NĐ-CP.

Thông tư này áp dụng đối với tổ chức, cá nhân có liên quan đến hoạt động kinh doanh đối tượng thủy sản nuôi chủ lực trên lãnh thổ Việt Nam.

This Circular applies to investors, project owners, asset owners, managers, users of construction works, domestic contractors, foreign contractors, state management agencies in construction, and other organizations and individuals related to investment construction activities within the territory of Vietnam.

Article 2. Principles for Determining Project Classification

1. The project classification specified in this Circular shall be determined based on the following criteria:

a) Level of importance, capacity scale: Applied to individual projects or a combination of projects or a production line consisting of multiple components within a construction project investment according to the types of projects specified in Appendix I of this Circular;

b) Structural scale: Applied to individual projects within a construction project investment according to the structural types specified in Appendix II of this Circular.

2. The project classification of an individual project is the highest level determined according to Appendices I and II of this Circular. In cases where an individual project is not specified in Appendix I of this Circular, its project classification shall be determined according to the provisions of Appendix II of this Circular, and vice versa.

3. The project classification of a combination of projects or a production line consisting of multiple components shall be determined as follows:

a) Where a combination of projects or a production line consisting of multiple components is specified in Appendix I of this Circular, the project classification shall be determined according to Appendix I of this Circular;

b) Where a combination of projects or a production line consisting of multiple components is not specified in Appendix I of this Circular, the project classification shall be determined according to the classification of the main project (within the combination of projects or production line) with the highest level. The classification of the main project is determined according to the provisions of Clause 2 of this Article.

4. The project classification of existing projects undergoing repair, renovation, or upgrading shall be determined as follows:

a) Where repair, renovation, or upgrading changes the criteria for determining project classification as stipulated in Clause 1 of this Article, the project classification of the project after repair, renovation, or upgrading shall be determined according to the provisions of this Article;

b) In other cases not covered by point a of this clause, the project classification of the project before and after repair, renovation, or upgrading remains unchanged.

5[3]The project classification of independently constructed new structures that are not part of phased investment projects of existing construction projects shall be determined according to the provisions of Clauses 1, 2, and 3 of this Article.

6[4]In cases where projects belong to phased investment projects, the criteria specified in Clause 1 of this Article corresponding to the completion stage shall be used to determine the project classification.

7[5]The determination of project classification for certain types of projects is guided by Appendix III attached to this Circular.

Article 3. Application of project levels in managing investment construction activities

1. The project levels prescribed in this Circular shall be applied as the basis for managing the following investment construction activities:

a) Determining the authority when reviewing feasibility study reports; reviewing or providing opinions on technology for investment construction projects using restricted transfer technologies or investment construction projects with potential negative environmental impacts using technology as stipulated in the Law on Technology Transfer; reviewing implementation design after basic design; inspecting acceptance work during construction and upon completion of construction works;

b) Classifying the capacity of construction activities of organizations and individuals to issue capacity certificates and practice certificates for construction activities;

c) Determining construction works exempt from building permits;

d) Determining construction works required to hold architectural design competitions as provided for in Clause 2, Article 17 of the Architecture Law;

đ) Determining construction works requiring separate technical guidelines to be established;

e) Determining construction works significantly affecting safety and public interests;

g) Determining construction works requiring mandatory professional liability insurance;

h) Determining construction works that must undergo periodic safety assessments during use;

i) Classifying construction accidents and determining the authority to resolve construction accidents;

k) Managing investment construction costs;

l) Determining the warranty period and amount for construction works;

m) Determining construction works that must establish maintenance procedures;

n) Other contents as prescribed by laws on managing investment construction works.

2. The application of project levels to manage investment construction activities as specified in point a, Clause 1 of this Article is as follows:

a) In cases where an investment construction project consists of only one independent main construction work: Apply the project level determined according to the provisions of Clause 2, Article 2 of this Circular;

b) In cases where an investment construction project includes multiple independent main construction works or is constructed along a route (consisting of multiple construction works arranged consecutively along the route): Apply the level of the highest main construction work determined according to the provisions of Clause 2, Article 2 of this Circular;

c) In cases where an investment construction project comprises a combination of main construction works or a production line consisting of multiple components: Apply the project level determined according to the provisions of Clause 3, Article 2 of this Circular;

d) In cases where an investment construction project includes multiple combinations of main construction works, multiple production lines, or a mixed combination: Apply the level of the highest combination of main construction works or production line determined according to the provisions of Clause 3, Article 2 of this Circular.

3. The principles for applying project levels to manage investment construction activities as specified from point b to point n, Clause 1 of this Article are as follows:

a) In cases where the scope of implementation is for a single independent construction work, apply the project level determined for Clause 2, Article 2 of this Circular that construction work;

b) In cases where the scope of implementation is for several construction works within an investment construction project, apply the project level determined for Clause 2, Article 2 of this Circular each reviewed construction work;

c) In cases where the scope of implementation is for an entire combination of construction works or an entire production line consisting of multiple components, apply the project level determined according to the provisions at Clause 3, Article 2 of this Circular. In cases where an investment construction project is implemented along a route, follow the provisions at point d of this clause;

d) In cases where the scope of implementation is for a single construction work, several construction works, or all construction works within an investment construction project implemented along a route, apply the project level determined for Clause 2, Article 2 of this Circular each construction work along the route.

4[6]. In cases of phased investment projects, use the project level prescribed at Clause 6, Article 2 of this Circular to apply project levels in managing investment construction activities as stipulated in Clauses 1, 2, and 3 of this Article.

5[7]. The application of project levels for certain types of construction works is guided in Appendix III issued together with this Circular.

Article 4. Provisions on Transition[8]

1. Projects for construction works under investment projects that have been decided to invest before this Circular takes effect shall be classified according to the provisions of the law at the time of approving the construction project investment plan.

2. In cases where the design of the construction work is adjusted after this Circular takes effect:

a) The adjustment of the construction design does not change the criteria for determining the classification of the construction work as stipulated in Clause 1 of Article 2 of this Circular, then the classification of the construction work shall be determined according to the provisions of the law at the time of approving the construction project investment plan;

b) The adjustment of the construction design changes the criteria for determining the classification of the construction work as stipulated in Clause 1 of Article 2 of this Circular, then the classification of the construction work shall be determined according to the provisions of this Circular.

Article 5. Effective Date[9]

1. This Circular takes effect from August 15, 2021 and replaces Circular No. 03/2016/TT-BXD dated March 10, 2016 of the Minister of Construction on the classification of construction works and guidance on application in investment construction management activities and Circular No. 07/2019/TT-BXD dated November 7, 2019 of the Minister of Construction on amending, supplementing, and replacing some provisions of Circular No. 03/2016/TT-BXD.

2. During implementation, if there are difficulties, organizations and individuals are requested to send their opinions to the Ministry of Construction for consideration and resolution./.

ANNEX I

CLASSIFICATION OF CONSTRUCTION WORKS ACCORDING TO LEVEL OF IMPORTANCE OR CAPACITY SCALE
(Annexed to Circular No. 06/2021/TT-BXD dated June 30, 2021 of the Minister of Construction)

Table 1.1 Classification of construction works for civilian purposes (civilian construction works)

Note:

- For other civilian construction works with usage purposes consistent with those listed in Table 1.1, Table 1.1 should be used to determine the classification based on the level of importance or capacity scale.

- Refer to examples of classifying civilian construction works in Appendix III.

Table 1.2 Classification of construction works for industrial production purposes (industrial construction works)

Note:

- Other industrial projects with purposes suitable for the types of projects listed in Table 1.2 shall use Table 1.2 to determine the level based on the degree of importance or capacity scale.

- Abbreviations in Table 1.2: TCS means Total Capacity; TSL means Total Output - Total Capacity (or Total Output) is calculated for all production lines within the project; QTC is standard criteria.

- Refer to examples of determining the level of industrial projects in Appendix III.

Table 1.3 Classification of infrastructure technical facilities (technical infrastructure facilities)

Note:

- Other technical infrastructure facilities with purposes suitable for the types of facilities listed in Table 1.3 shall use Table 1.3 to determine the level based on the degree of importance or capacity scale.

- Abbreviations in Table 1.3: TCS means Total Capacity calculated for all production lines within the project.

- (*): For parking garages, the number of parking spaces is considered for passenger cars up to 9 seats or trucks under 3,500 kg. In case of mixed parking facilities including both cars and motorcycles, 6 motorcycle parking spaces are equivalent to 1 car parking space.

- Refer to examples of determining the level of technical infrastructure facilities in Appendix III.

Table 1.4 Classification of transportation service facilities (transportation facilities)

Note:

- For other transportation works with purposes suitable for the types listed in Table 1.4, use Table 1.4 to determine the level based on importance or capacity.

- Refer to examples of determining the level of transportation works in Appendix III.

Table 1.5 Classification of agricultural and rural development works (agricultural and rural development works)

Note:

- For other agricultural and rural development works (NN&PTNT) with purposes suitable for the types listed in Table 1.5, use Table 1.5 to determine the level based on importance or capacity.

- For livestock breeding, crop cultivation, forestry, salt production, aquaculture, new rural construction and other agricultural and rural development works, due to their specific nature, these projects often include various types of works such as civil works, industrial works, transportation works, water conservancy works, technical infrastructure works, etc., therefore, when classifying these works, it will depend on specific cases to apply appropriate classification based on the principles set out in this Circular.

- Refer to examples of determining the level of agricultural and rural development works in Appendix III.

ANNEX II

CLASSIFICATION OF CONSTRUCTION WORKS BY SCALE AND STRUCTURE
(Annexed to Circular No. 06/2021/TT-BXD dated June 30, 2021 issued by the Minister of Construction)

Table 2. Classification of construction works by scale and structure

Note:

1. Determining the project level based on the type and scale of the structure is carried out in the following sequence:

a) Based on the characteristics of the project, determine the type of structure according to the Sections in Table 2;

b) Determine the project level according to all classification criteria specified for the determined type of structure at point a (above). The highest level obtained shall be the project level.

2. Some terms used in the classification criteria of Table 2 are understood as follows:

a) Building, Building-like structure: A constructed structure in a cubic form, with parts above ground, composed of load-bearing structures, enclosures (which may or may not exist), and a roof.

b) Ground level or project ground level: Elevation taken according to approved planning (in areas without planning, take according to design elevation or current ground level with existing structures).

c) Above-ground floor: A floor whose floor level is higher than or equal to the project ground level.

d) Basement floor (or underground floor): A floor where more than half of its height lies below the project ground level.

đ) Half-basement floor (or half-underground floor): A floor where half of its height lies above or at the project ground level.

e) Mezzanine floor: An intermediate floor between floors, where its floor (mezzanine floor) lies between the floors with primary functions or between the roof and the floor directly below with primary function; the mezzanine floor has a smaller floor area than the floor directly below with primary function.

g) Attic floor: A floor within the space of a pitched roof, where the entire or part of its vertical surface is formed by the inclined or folded roof surface, and where standing walls (if any) do not exceed 1.5 m above the floor level.

h)||| Top floor or attic top floor: The topmost floor of a building used for enclosing stairwells, elevator shafts, building equipment (if any), and for access to the roof and rescue operations.

i) Technical floor: A floor used for arranging building technical equipment (may combine with emergency shelter spaces in the technical floor).

k) Underground depth: Depth measured from the project ground level to the upper surface of the deepest basement floor.

l) Largest span of building/structure: The maximum distance between the centers of adjacent columns (pillars, walls) used to support horizontal structures (beams, slab floors without beams, roof trusses, bridge trusses, cable-stayed structures...). For frame structures, the span value is taken as 50% of the value specified in Table 2.

m) Total floor area of the building/project: The total floor area of all floors, including basement floors, semi-basement floors, mezzanine floors, technical floors, attic floors, and penthouse floors. The floor area of a floor is the built-up floor area of that floor, including the enclosing walls (or shared walls belonging to the building) and the plan area of balconies, terraces, staircases, elevator shafts, technical boxes, chimneys.

3. Method of determination Height of the project/structure:

a) For projects/structures under item 2.1: Height is measured from ground level to the highest point of the structure (including the penthouse or pitched roof). For projects/structures placed on ground with different ground levels, height is measured from the lowest ground level. If there are technical equipment such as antenna towers, lightning rods, solar energy devices, metal water tanks, etc., at the top of the structure, the heights of these devices are not included in the height of the structure.

b) For structures under item 2.2: The height of the structure is measured from ground level to the highest point of the structure. For structures with different ground levels, height is measured from the lowest ground level.

The height of the structure in certain specific cases is defined as follows:

+ For structures supporting equipment under item 2.2.1: The height of the structure is calculated as the sum of the height of the supporting column/tower/pole and the equipment placed on the supporting column/tower/pole;

+ For structures installed on existing buildings under item 2.2.2: The height of the structure is measured from the base to the top of the installed structure (for example: a BTS tower 12 meters long, installed on the roof of a three-story existing building, the height of this BTS tower structure is calculated as 12 meters).

c) For structures under item 2.3:

- Height of supporting column: The distance from the top surface of the column foundation (supporting footing) to the top of the column;

- Height above ground/water level: The distance from the cable-stayed structure to the ground or water surface (average annual water level) below;

d) For structures containing items under item 2.4: Height of the containing structure is determined similarly to item 2.1

đ) For structures under item 2.5: Height of bridge pier is the distance from the top surface of the pier foundation (supporting footing) to the top of the pier;

e) For retaining walls and revetments under item 2.7:

- Height of wall: Measured from the lower ground surface to the top of the retaining wall;

- Height of revetment: Calculated as the sum of the sub-water and super-water parts of the structure.

g) For structures under item 2.8:

- Structures under item 2.8.1: Height of dam is measured from the lowest foundation surface after excavation (excluding the toe height) to the top of the dam;

- Structures under item 2.8.2: Height of dam is measured from the lowest toe of the dam to the top of the dam.

h) For structures under item 2.14.2: Height is measured from the ground to the top of the structure/project.

4. Method of determination Number of high floors of the project under item 2.1:

Number of high floors of the project: The total of all floors above ground and half/basement floors but excluding the attic floor. In some specific cases, the penthouse and mezzanine floors are not counted in the number of high floors:

- The penthouse is not counted in the number of high floors of the project when the penthouse roof area does not exceed 30% of the main roof area.

- Mezzanine floors are not counted in the number of high floors of the project in the following cases:

+ Single-family houses, single-family houses combined with other residential purposes: A mezzanine floor with an area not exceeding 65% of the area of the main-use floor directly below it, and only one mezzanine floor can be excluded from the number of high floors of the house.

+ Apartment buildings, mixed-use apartment buildings: Only one mezzanine floor is not counted in the number of high floors of the project when the mezzanine floor is solely used for technical areas (such as the bottom floor of a swimming pool, generator floor, or other equipment floors), with an area not exceeding 10% of the area of the floor directly below it and not exceeding 300 square meters.².

+ Other projects: Mezzanine floors solely used for technical areas, with an area not exceeding 10% of the area of the main-use floor directly below it.

5. For open drainage channels and ditches (infrastructure works): Determine the project grade according to the reinforced structure of the channel bank or channel slope (choose the appropriate type according to item 2.7 or item 2.9 in Table 2).

6. Refer to examples of determining the project grade according to the type and scale of the structure in Appendix III.

ANNEX III

EXAMPLES OF DETERMINING PROJECT GRADE
(Annexed to Circular No. 06/2021/TT-BXD dated June 30, 2021 issued by the Minister of Construction)

3.1 Example 1: Civil use project (civil construction project) - High School A

The investment project "High School A" has a capacity of 1,500 students. The project includes the following works:

- Building A1 (Administrative Building): 8 stories high, total floor area 4,000 m²²;

- Building A2 (Classroom Building): 6 stories high, total floor area 4,650 m²²;

- Building A3 (Classroom Building): 4 stories high, total floor area 4,000 m²²;

- Building A4 (Classroom Building): 5 stories high, total floor area 5,000 m²²;

- Building A5 (Physical Education Building used for indoor training and competition sports, also used for large gatherings and meetings during school events): 2 stories high (18 m), with a 200-seat grandstand, total floor area 2,400 m²², largest structural span 30 m, total capacity (when organizing events) 750 people;

- Building A6 (Dormitory): 5 stories high, total floor area 3,000 m²²;

- Building A7 (Cafeteria): 2 stories high, total floor area 600 m²²;

- Garden: Area 2 hectares;

- Internal road system within the school: One lane for walking, bicycles, motorcycles, and cars;

- Security fence: 3 meters high;

- Guard House: 1 story high, floor area 12 m²².

The project grade is determined as follows:

a) Determination of the grade of the main complex of buildings:

High School A has a main complex of buildings used for educational purposes (including buildings from A1 to A5). The project grade based on capacity is determined according to the provisions at Clause 3, Article 2 of this Circular: Corresponding to item 1.1.1.3 of Table 1.1 in Appendix I and with a capacity of 1,500 students, High School A has a project grade based on capacity of Level II.

b) Determination of the grades of buildings within High School A:

- House A1: Not listed in Appendix I Table 1.1, therefore according to the provisions at Clause 2, Article 2 of this Circular, the level of the construction project is determined based on type and structural scale. According to Appendix II Table 2, this project corresponds to item 2.1.1; the level is determined based on total floor area: Level III, based on number of floors: Level II. The level of the House A1 construction project is Level II (the highest level determined).

- House A2: The method for determining the level is similar to that for House A1. The level of the House A2 construction project determined is: Class III.

- House A3: The method for determining the level is similar to that for House A1. The level of the House A3 construction project determined is: Class III.

- House A4: The method for determining the level is similar to that for House A1. The level of the House A4 construction project determined is: Class III.

- House A5: This project has its own capacity scale, therefore the level of the construction project is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

+ Determining the level based on capacity scale: Corresponds to item 1.1.3.2 in Appendix I Table 1.1 (type of sports facility): Level III; corresponds to item 1.1.4.1 in Appendix I Table 1.1 (type of facility with concentrated large crowds): Level II. The highest level of the project determined based on capacity scale: Level II;

+ Determining the level based on structural scale: Corresponds to item 2.1.1 in Appendix II Table 2; the level is determined based on height: Level III; based on number of floors: Level III; based on total floor area: Level III, based on largest span: Level III. The highest level of the project determined based on structural scale: Level III;

Therefore, the level of the House A5 construction project is Level II (the highest level determined from capacity scale and structural scale).

- House A6: The method for determining the level is similar to that for House A1. The level of the House A6 construction project determined is: Class III.

- House A7: The method for determining the level is similar to that for House A1. The level of the House A7 construction project determined is: Class III.

- Garden: Corresponds to item 1.3.4 in Appendix I Table 1.3, the level of the construction project is determined based on total floor area as Level IV.

- Internal school road system: Is a dedicated road specified in item 1.4.1.5 of Appendix I Table 1.4. The level of the construction project determined is: Level IV.

- Protective fence: Not listed in Appendix I Table 1.1, therefore according to the provisions at Clause 2, Article 2 of this Circular, the level of the construction project is determined based on type and structural scale. According to Appendix II Table 2, this project corresponds to item 2.14.2; the level of the construction project is determined based on height as Level IV.

- Guard house: The method for determining the level is similar to that for House A1. The level of the guard house construction project determined is: Level IV.

c) Applying the level of the construction project in managing investment construction activities:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: School A High School has a main set of projects, according to point c clause 2 Article 3 of this Circular, applying the level of the main set of projects (determined in part a Example) is Level II.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular; example classifying the construction activity capability of organizations and individuals participating in construction activities as follows:

+ In case the scope of implementation covers the entire set of projects: According to point c clause 3 Article 3 of this Circular, applying the level of the main set of projects (determined in part a Example) is Level II;

+ In case the scope of implementation covers some projects within the construction project: According to point b clause 3 Article 3 of this Circular, applying the level of each project under consideration (determined in part b Example); for example: House A1 uses the level of the construction project as Level II to apply; House A3 uses Level III to apply; Garden uses Level IV to apply;

+ In case the scope of implementation covers a single independent project: According to point a clause 3 Article 3 of this Circular, applying the level of the implemented project (determined in part b Example); for example: House A2 uses Level III to apply; similarly, if organizations or individuals only participate in implementing the protective fence or guard house, then use the level of the construction project as Level IV to apply.

3.2 Example 2: Civil Construction Project - Q General Hospital

The "Q General Hospital" construction investment project has a scale of 450 beds. The project includes the following constructions:

- Building Q1 (Office, Training and Research Center of the hospital): 9 floors high, total floor area 8,000 m²²;

- Building Q2 (Outpatient and Laboratory Center): 3 floors high, total floor area 2,500 m²²;

- Building Q3 (Emergency and Surgery): 2 floors high, total floor area 2,000 m²²;

- Building Q4 (Departments and Post-Surgery Treatment Areas): 22 floors high, total floor area 22,000 m²²;

- Building Q5 (Food Processing Area): 2 floors high, total floor area 1,000 m²²;

- Building Q6 (Cafeteria): 2 floors high, total floor area 600 m²²;

- Building Q7 (Morgue): 1 floor high, floor area 500 m²²;

- Building Q8 (Funeral Home): 1 floor high, floor area 600 m²²;

- Wastewater Treatment Plant: 1,500 m³/day-night;

- Solid Waste Incineration Plant: Capacity 5 tons/day-night;

- Ornamental Garden and Landscape System;

- Outdoor Parking Lot: 5,000 m²²;

- Internal Hospital Road System: One lane, for motorcycles and cars;

- Protective Wall: Height 4.5 meters;

- Guard Houses (4 houses): Each house is one floor high, area 12 m²²;

- Power System: Power lines and transformer station, voltage less than 35 kV;

- Water Supply System (Water Tank and Pump Station): Capacity 1,500 m³³/day-night;

- Sewage Drainage System: Pipe diameter D = 450 mm, length 900 m.

The project grade is determined as follows:

a) Determination of the grade of the main complex of buildings:

Q General Hospital has a main set of projects used for medical examination and treatment purposes (including projects Q1, Q2, Q3, Q4, Q7). The level of the construction project based on capacity scale is determined according to the provisions at Clause 3, Article 2 of this Circular: Corresponding to item 1.1.2.1 in Appendix I Table 1.1 and with a scale of 450 beds, Q General Hospital has a construction project level based on capacity scale as Level II.

b) Determining the levels of projects within Q General Hospital:

- Building Q1: Not listed in Appendix I Table 1.1, therefore according to the provisions at Clause 2, Article 2 of this Circular, the level of the construction project is determined based on type and structural scale. According to Appendix II Table 2, this project corresponds to item 2.1.1; the level of the Q1 construction project determined is Level II.

- Building Q2: The method for determining the level is similar to that for building Q1. The level of the Q2 construction project determined is: Class III.

- Building Q3: The method for determining the level is similar to that for building Q1. The level of the Q3 construction project determined is: Class III.

- Building Q4: The method for determining the level is similar to that for building Q1. The level of the Q4 construction project determined is: Level II.

- Building Q5: The method for determining the level is similar to that for building Q1. The level of the Q5 construction project determined is: Class III.

- Building Q6: The method for determining the level is similar to that for building Q1. The level of the Q6 construction project determined is: Class III.

- Building Q7: The method for determining the level is similar to that for building Q1. The level of the Q7 construction project determined is: Level IV.

- House Q8: The mortuary building is included in Table 1.3 Appendix I and is defined according to its level of importance. In this case, the construction level is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

+ Determining the level based on the degree of importance: Corresponding to item 1.3.6 Table 1.3 Appendix I, the construction level determined is Level II;

+ Determining the level based on structural scale: Corresponding to item 2.1.1 Table 2 Appendix II, the construction level determined is Level IV;

Therefore, the construction level of House Q8 determined is Level II (the highest level determined from the degree of importance and structural scale).

- Wastewater Treatment Station: Corresponding to item 1.3.2.3 Table 1.3 Appendix I, the construction level determined is Level III.

- Solid Waste Treatment Station: Corresponding to item 1.3.3.1.b Table 1.3 Appendix I, the construction level determined is Level III.

- Outdoor Parking Lot: Corresponding to item 1.3.8.3 Table 1.3 Appendix I, the construction level determined is Level IV.

- Water Supply System (water reservoir and pump station): Corresponding to item 1.3.1.2 Table 1.3 Appendix I; the construction level determined is: Class III.

- Sewage Drainage System: Not included in Table 1.3 Appendix I, therefore according to the provisions at Clause 2, Article 2 of this Circular, the construction level is determined based on type and structural scale. According to Table 2 Appendix II, this project corresponds to item 2.10.3; the construction level determined based on pipe diameter is Level III but the total length of the drainage system is less than 1,000 meters, so the construction level is reduced by one level to Level IV.

- Power Distribution System: Corresponding to item 1.2.5.11 Table 1.2 Appendix I, the construction level determined is Level IV.

- Determining the levels of Greenery and Garden Systems, Internal Road Systems, Fence Walls, and Guard Houses see Example 1 of this Appendix.

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 1 of this Appendix.

3.3 Example 3: Civil Construction Project - Complex X

The investment and construction project "Complex X" on Plot A within an urban area with complete technical infrastructure. Complex X includes the following projects:

- Building X1 (Residential Building): 15 floors high, 60 meters tall, total floor area 12,000 square meters²;

- Building X2 (Office Building): 18 floors high, 72 meters tall, total floor area 15,000 square meters²;

- Building X3 (Mixed-use Commercial and Residential Building): 25 floors high, 100 meters tall, total floor area 22,000 square meters²;

- Central Garden between buildings: Area 1,000 square meters².

The project grade is determined as follows:

a) Determining the construction levels of projects in Complex X:

Complex X has several independent main projects including Buildings X1, X2, and X3, the construction level is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

- Building X1: Not included in Table 1.1 Appendix I of this Circular, therefore the construction level is determined based on type and structural scale. According to Table 2 Appendix II, this project corresponds to item 2.1.1; the construction level of Building X1 determined is Level II.

- Building X2: The construction level is determined similarly to Building X1. The construction level of Building X2 determined is: Level II.

- Building X3: The construction level is determined similarly to Building X1. The construction level of Building X3 determined is: Class I.

- Determining the construction level of the Central Garden see Example 1 of this Appendix.

b) Applying the construction level in managing investment and construction activities:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: Complex X has several independent main projects, according to point b clause 2 Article 3 of this Circular, apply the level of the main project with the highest level (Building X3, determined in part a of this example) is Primary Level.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular: The method of determination see Example 1 of this Appendix.

3.4 Example 4: Industrial Construction Project - Cement Plant A

The construction project "Cement Plant A" with a designed capacity of 2 million tons of cement per year. Raw materials inputs such as clay, limestone, coal, additives are supplied by other companies. The project includes the following projects:

- Projects belonging to the main production line (cement production line): Coal grinding house, Raw material grinding house, Powder silo, Transport from powder silo to heat exchanger tower, Heat exchanger tower, Rotary kiln columns, Clinker cooling house, Clinker silo, Transport from clinker silo to cement grinding house, Cement grinding house, Cement silo...

- Other independent projects in the project: Material warehouse; Mechanical workshop; Control house; Medical station; Drainage channel; Cable tunnel; Weighing station and other projects.

The project grade is determined as follows:

a) Determining the construction level of the main production line:

Cement Plant A project has a main production line, the construction level is determined according to the provisions at Clause 3, Article 2 of this Circular. This production line is determined based on production capacity, corresponding to item 1.2.1.2 Table 1.2 Appendix I for cement plants, the construction level of the main production line is Primary Level.

b) Determining the construction level of projects in Cement Plant A:

Industrial projects in the plant are determined based on the provisions at Clause 2, Article 2 of this Circular. Except for the Cement Grinding House which is included in Table 1.2 Appendix I and determined based on production capacity and structural scale, the remaining projects not included in Table 1.2 Appendix I, therefore the construction level is determined based on type and structural scale using Table 2 Appendix II of this Circular. Below are some examples:

- Coal Warehouse (round warehouse with a closed roof, diameter 120 meters): The project corresponds to item 2.1.1 Table 2 Appendix II; determined based on total floor area 11,300 square meters: Level II, based on the largest span structure 120 meters: Level I, based on height 20 meters: Level III. The construction level of the Coal Warehouse:²: Level II, based on the largest span structure 120 meters: Level I, based on height 20 meters: Level III. The construction level of the Coal Warehouse: Class I (the highest level determined).

- Conveyor Belt CC (transports coal from the Coal Warehouse to the Coal Grinding House: Box frame structure supported by columns; cross-section size of the box frame: 3 meters x 3 meters; column height above ground: from 9 meters to 24 meters; maximum span between two column centers: 30 meters): The project corresponds to item 2.1.3 Table 2 Appendix II; determined based on height H = 12 ÷ 27 meters (total height of columns and conveyor belt): Level III, based on span L = 30 meters: Level III. The construction level of the Coal Conveyor Belt: Class III (the highest level determined).

- Cement Silo 1 (Capacity V = 10,000 cubic meters; height H = 45 meters; diameter D = 20 meters): The project corresponds to group 2.4 Table 2 Appendix II; determined based on capacity: Level II, based on height: Level II. The construction level of Cement Silo 1:³; height H = 45 meters; diameter D = 20 meters): The project corresponds to group 2.4 Table 2 Appendix II; determined based on capacity: Level II, based on height: Level II. The construction level of Cement Silo 1: Level II (the highest level determined).

- Heat Exchanger Tower (8 floors high; height 82 meters; total floor area 5,400 square meters²): The project corresponds to item 2.1.2 Table 2 Appendix II; determined based on height: Level I, based on number of floors: Level II, based on total floor area: Level III. The construction level of the Heat Exchanger Tower: Class I (the highest level determined).

- Support column for rotary kiln (reinforced concrete pile foundation support system for rotary kiln with a diameter of 5 m. Height of the column itself: H1 = 9 m; height including equipment: H = 9 m + 5 m = 14 m): The corresponding project according to item 2.2.1 Table 2 Appendix II, the level of the project determined based on the structural height is Level III.

- Chim khói (reinforced concrete chimney with a height of 120 m): The corresponding project according to item 2.2.1 Table 2 Appendix II, the level of the project determined based on the height is Primary Level.

- Weighing station (vehicle weighing station): Structure in the form of an underground reinforced concrete tank, weighing equipment placed inside the tank; dimensions of the tank (Length x Width x Depth) = (5 m x 14 m x 4.5 m). According to Table 2 Appendix II, the corresponding project is item 2.4; the level determined based on the depth underground is Level III, according to the volume contained (V = 315 m³): Level IV. The level of the Weighing Station: Class III (the highest level determined).

- Method for determining the level of civil projects such as Control Room, Health Station, and other projects see Example 1 of this Appendix.

- Method for determining the level of technical infrastructure projects such as Machinery Parking Area, Wastewater Treatment Plant, Water Supply System, and other projects see Example 2 of this Appendix.

c) Applying the level of the construction project in managing investment construction activities:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: Project Cement Factory A has a main production line, according to point c clause 2 Article 3 of this Circular, apply the level of the main production line (already determined in item a of this example) is Primary Level.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular: Example of classification of construction capacity of organizations and individuals participating in construction activities as follows:

+ In case the scope of implementation covers the entire main production line: According to point c clause 3 Article 3 of this Circular, apply the level of the main production line (already determined in item a of this example) is Class I;

+ In case the scope of implementation covers an independent project (part of the main production line or another independent project within the project) or several projects within the construction investment project: Determination method see Example 1 of this Appendix.

3.5 Example 5 - Industrial Construction - Hydropower Plant B

The "Hydropower Plant B" investment and construction project has a designed capacity of 30 MW. The project includes the following works:

- Reservoir: Volume of 10 million m³;

- The "Headworks Complex" includes the following works: Main dam (height 30 m, concrete structure on rock foundation), Spillway, Auxiliary dam,...

- The "Power Line Complex" includes the following works: Hydropower plant (capacity 30 MW), Intake gate, Pressure tunnel, Surge tower, Penstock, Outlet gate, Tailrace channel,...

- Other works include: Transmission line and substation (voltage 110 kV), Internal road, management and control building (4 floors high, without basement), administrative building, guard house, gate, fence,...

- Temporary and auxiliary works for construction include: Cofferdam (height 7 m, earthfill structure), Diversion channel, Diversion culvert, temporary roads for construction,...

The project grade is determined as follows:

a) Determination of the grade of the main complex of buildings:

Hydropower Plant B belongs to a project with a combination of main works (including Reservoir, Main Dam, Hydropower Plant). The level of the combination of main works is determined according to the provisions at Clause 3, Article 2 of this Circular. According to the provisions at point b item 1.2.5.3 Table 1.2 Appendix I, the level of the combination of works is determined as follows:

- Reservoir: Corresponding to point b item 1.2.5.3 Table 1.2 Appendix I, the level of the work is determined based on the volume is Level III;

- Main Dam: Corresponding to point c item 1.2.5.3 Table 1.2 Appendix I, the level of the work is determined based on the height of the concrete dam on rock foundation is Level II;

- Hydropower Plant: Corresponding to point a item 1.2.5.3 Table 1.2 Appendix I, the level of the work is determined based on the capacity is Level III.

Therefore, the level of the combination of main works of Hydropower Plant B is Level II (based on the level of the main dam).

b) Determining the level of works belonging to Hydropower Plant B:

- Works of reservoir, main dam, power plant have been determined in item a of this example;

- Other works within the power plant are determined according to the provisions at Clause 2, Article 2 of this Circular. Below are some examples:

+ Transmission line and substation: Corresponding to Item 1.2.5.11 Table 1.2 Appendix I, the level of the work is determined based on voltage is Level II;

+ Internal road: Determination method see Example 1 of this Appendix;

+ Management and control building: This work is not included in Table 1.1 Appendix I Circular, therefore the level of the work is determined based on type and scale of the structure. According to Table 2 Appendix II, this work corresponds to item 2.1.1; the determined level is Level III.

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 1 of this Appendix.

3.6 Example 6: Industrial Construction - Mechanical Factory C

The "Mechanical Factory C" investment and construction project aims to produce small mechanical products according to orders from other enterprises. Products of this factory are quite diverse and depend on customer requirements, so at the time of project planning, specific product types and production volumes cannot be determined. The project includes the following works:

- Warehouse: One floor high, largest span 24 m, total floor area 6,000 m², height from ground outside the building to the top of the roof 12 m;

- Main production building (houses machines and assembly lines: lathe, press, welding...): Industrial building one floor high, three spans, largest span 60 m, total building area 10,000 m², building height 18 m (from ground outside the building to the top of the roof);

- Office building (used for offices, dining hall, workers' rest rooms...);

- Parking lot (concrete parking lot, for materials and machinery): area 1 hectare; and other works such as Guard House, Fence, Substation...

The project grade is determined as follows:

a) Determining the level of the main work:

Mechanical Factory C has one main work which is the Main Production Building. The level of the main work is determined according to the provisions at Clause 2, Article 2 of this Circular are Level II (the level of the Main Production Building is determined in item b of this example).

b) Determining the level of works belonging to Mechanical Factory C:

- Works of warehouse and main production building in Mechanical Factory C are determined according to the provisions at Clause 2, Article 2 of this Circular. These works do not have significant importance or capacity levels and are not included in Table 1.2 Appendix I of this Circular, therefore their levels are determined based on type and scale of the structure.

+ Warehouse: According to Table 2 Appendix II, this work corresponds to item 2.1.1; the level is determined based on height: Level III, based on number of floors: Level IV, based on total floor area: Level III, based on largest span: Level III. The level of the Warehouse: Class III (the highest level determined).

+ Main Production Building: According to Table 2 Appendix II, this work corresponds to item 2.1.1; the level is determined based on height: Level III, based on number of floors: Level IV, based on total floor area: Level III, based on largest span: Level II. The level of the Main Production Building: Level II (the highest level determined).

- Method for determining the level of works such as Office Building, Parking Lot, Guard House, Fence, Substation see the relevant provisions Examples 1 to Example 4 of this Appendix.

c) Applying the level of the construction project in managing investment construction activities:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: Factory Machinery C has a main project which is the Main Production Facility, according to point a clause 2 Article 3 of this Circular, apply the level of the main project (determined at point a of this Example) as Level II.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular: The method of determination see Example 1 of this Appendix.

3.7 Example 7: Engineering Infrastructure Project (EIP) - Hanoi TV Tower

The construction project "Hanoi TV Tower" is 600 meters high. The project includes the following works:

- Main Tower: Height 600 meters;

- P1 (Outdoor Parking Lot): Area 1 hectare;

- P2 (Green Space with Trees): Area 5 hectares.

The project grade is determined as follows:

a) Determining the level of the main work:

The "Hanoi TV Tower" project has a main work being the Main Tower and auxiliary works. Determine the level of the main work according to the provisions at Clause 2, Article 2 of this Circular. The Main Tower does not have a degree of importance or capacity scale, therefore the level of the work is determined based on type and structural scale. The determined level is special level (the level of the Main Tower is determined at point b of this Example).

b) Determine the levels of works belonging to the Hanoi TV Tower project:

- Main Tower: According to Table 2 Appendix II, this work corresponds to item 2.2.2; the determined level of the work is based on height as special level.

- Work P1: Level IV (method for determining the level of the work see Example 1 of this Appendix).

- Work P2: Class III (method for determining the level of the work see Example 1 of this Appendix).

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 6 of this Appendix.

3.8 Example 8: Engineering Infrastructure Project (EIP) - Water Plant A

The investment construction project "Water Plant A" has a capacity of 50,000 cubic meters/day-night to supply water for a residential area. The project includes the following works:³- A1 (Raw Water Pipeline from Source to Plant): Inner diameter D = 1,000 mm, length 5,000 meters;

- A2 (Water Storage and Treatment Tank): Volume 12,000 cubic meters, half above ground and half underground, underground depth 5 meters, height 3 meters;

- A3 (Backup Clean Water Storage Tank): Volume 3,000 cubic meters;³- A4 (Clean Water Pumping Station): Capacity 70,000 cubic meters/day-night placed in a building 1 story high, height 8 meters, total floor area 1,000 square meters;

- A5 (Main Water Supply Pipeline): Inner diameter D = 800 mm, length 10,000 meters;³- A4 (Clean Water Pumping Station): Capacity 70,000 cubic meters/day-night placed in a building 1 story high, height 8 meters, total floor area 1,000 square meters;

- A6 (Branch Water Supply Pipeline): Inner diameter D = 600 mm, length 15,000 meters;³- A7 (Water Distribution Pipeline): Diameter D = 125 mm; and other works.²;

The Water Plant A project has a main production line directly serving the extraction, production, and supply of water (including works from A1 to A7). The level of the work based on capacity scale is determined according to the provisions at

: Corresponding to item 1.3.1.1 Table 1.3 Appendix I and with a clean water supply capacity of 50,000 cubic meters/day-night, Water Plant A has a level of work based on capacity scale as

b) Determine the levels of works belonging to the Water Plant A project:

The project grade is determined as follows:

a) Determining the construction level of the main production line:

Works belonging to Water Plant A determine their level according to the provisions at Clause 3, Article 2 of this Circular- Work A1: There is no capacity scale (not in Table 1.3 Appendix I), therefore the level of the work is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to item 2.10.1; the determined level of work A1 is³- Work A2: There is no capacity scale (not in Table 1.3 Appendix I), therefore the level of the work is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to group 2.4; determine the level of the work based on storage volume: Level II, based on underground depth: Level III, based on height: Level IV. The level of work A2: Primary Level.

- Work A3: The method for determining the level is similar to that for work A2. The determined level of work A3 is:

- Work A4: This work has a capacity scale, the level is determined as follows: Clause 2, Article 2 of this Circular as follows:

+ Determining the level based on capacity scale: Corresponding to item 1.3.1.2 Table 1.3 Appendix I, the determined level of the work is Level I; Primary Level.

+ Determining the level based on structural scale: Corresponding to item 2.1.1 Table 2 Appendix II, determine the level of the work based on number of floors: Level IV, based on height: Level III, based on total floor area: Level III. The highest level determined based on structural scale: Level III. Level II (the highest level determined).

Therefore, the level of work A4 is Class III.

- Work A5: The method for determining the level is similar to that for work A1. The determined level of work A5 is:

- Work A6: The method for determining the level is similar to that for work A1. The determined level of work A6 is:

- Work A7: The method for determining the level is similar to that for work A1. The determined level of work A7 is:

Example 4 of this Appendix Primary Level (the highest level determined from capacity scale and structural scale).

3.9 Example 9: Engineering Infrastructure Project (EIP) - Car Park, Parking Lot Class I.

a) Car Park A (underground car park without upper floors): Level II.

Underground car park with 3 basement floors, depth 18 meters (from ground surface to basement floor 3), total floor area 5,000 square meters, number of parking spaces: 400 cars. The level of this work is determined according to the provisions at Level IV.

c) Applying the construction level in managing investment and construction activities: The method of determination see - Determining the level based on capacity scale: Corresponding to item 1.3.8.1 Table 1.3 Appendix I, the level of the work is determined based on number of parking spaces as Level II;.

- Determining the level based on type and structural scale: Corresponding to item 2.1.1 Table 2 Appendix II, determine the level of the work based on number of basement floors: Level II, based on underground depth: Level II, based on total floor area: Level III. The highest level determined based on structural scale is Level II;

Therefore, the level of the Car Park A is

b) Car Park B (with upper and basement floors):²Elevated car park with 3 upper floors and 2 basement floors with a total floor area of 12,000 square meters (basement floor area: 4,500 square meters, upper floor area: 7,500 square meters), number of parking spaces: 400 cars (150 spaces in basement and 250 spaces in upper part). The level of this work is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

- Determining the level based on capacity scale: Corresponding to items 1.3.8.1 and 1.3.8.2 Table 1.3 Appendix I, the level of the work is determined based on number of parking spaces for basement part: Level III, based on number of parking spaces for upper part: Level III. The highest level determined based on capacity scale is Level III;

- Determining the level based on type and structural scale: Corresponding to item 2.1.1 Table 2 Appendix II, the level of the work is determined as Level II;

Therefore, the level of the Car Park B is Level II (the highest level determined from capacity scale and structural scale).

(the highest level determined from capacity scale and structural scale).

c) Parking Lot C without car park building:² Parking Lot C: Reinforced concrete pavement area 10,000 square meters and without a car park building. The level of this work is determined according to the provisions at²as follows: The work corresponds to item 1.3.8.3 Table 1.3 Appendix I, the level of the work is determined based on total area as²3.10 Example 10: Transportation Infrastructure Project - Expressway A Clause 2, Article 2 of this Circular as follows:

The investment construction project "Expressway A" is 200 kilometers long, design speed 120 km/h. On this expressway there are the following works:

- A1 (Expressway): Design speed 120 km/h;

Thus, the construction level of Building B for Parking is Level II (the highest level determined based on capacity scale and structural scale).

c) Parking Lot C without a parking building:

Parking Lot C: A reinforced concrete surface area of 10,000 m²² and without a parking building. The construction level of this project is determined according to the provisions at Clause 2, Article 2 of this Circular as follows: The project corresponds to item 1.3.8.3 Table 1.3 Appendix I, the construction level is determined based on the total area as Level IV.

3.10 Example 10: Transportation Project - Highway A

The investment and construction project "Highway A" is 200 km long with a design speed of 120 km/h. Along this route, there are the following projects:

- A1 (Expressway): Design speed 120 km/h;

- A2 (Road Bridge): 4 spans, largest span 40 m, height of bridge pier 20 m;

- A3 (Tunnel for Road Traffic): Mountain tunnel with reinforced concrete lining, length 300 m, cross-sectional area of the tunnel 200 m²;²;

- A4 (Toll Station): Frame structure with roof, height to top of construction: 15 m, length of largest span: 40 m; and other minor structures: Signpost columns, signpost frames, pedestrian underpasses, guardrails;

The project grade is determined as follows:

The Highway Project A is constructed along a route including several main works directly serving transportation (including works A1, A2, and A3) and auxiliary works (A4 and other minor structures). The classification of these works is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

a) Determining the classification of main works:

- Work A1: A work with capacity scale and without regulations determining classification based on type and structural scale. According to the provisions at Section 1.4.1.1 Table 1.4 Appendix I, the work classification is determined based on the design speed as special level.

- Work A2: Without importance level or capacity scale (not listed in Table 1.4 Appendix I), therefore the work classification is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to Section 2.5.1, determining the work classification based on the largest span: Class III, based on the height of the bridge pier: Class II. Classification of Work A2: Level II (the highest level determined).

- Work A3: Without importance level or capacity scale (not listed in Table 1.4 Appendix I), therefore the work classification is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to Group 2.6.1, determining the work classification based on total length: Class II, based on cross-sectional area: Class I, based on tunnel shell structure: Class II. Classification of Work A3: Class I (the highest level determined).

b) Determining the classification of auxiliary works:

- Work A4: Without importance level or capacity scale (not listed in Table 1.4 Appendix I), therefore the work classification is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to Section 2.1.3, determining the work classification based on height: Class III, based on the largest span: Class III. Classification of Work A4: Class III (the highest level determined).

- Other minor structures (signpost columns, signpost frames, pedestrian underpasses, guardrails...): Determined according to the provisions at Clause 2, Article 2 of this Circular. If the work does not have (or does not have a suitable type) in Table 1.4 Appendix I, then the classification is determined based on type and structural scale (using Table 2 Appendix II).

c) Applying the level of the construction project in managing investment construction activities:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: The Highway Project A is constructed along a route including several main works, according to point b clause 2 Article 3 of this Circular, applying the highest classification of the main works is special level (classification of Work A1 - already determined in point a Example here) to implement.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular: Example of classifying the construction activity capacity of organizations and individuals participating in construction activities for one, some, or all works within the investment construction project along the route carried out according to the provisions at point d clause 3 Article 3 Circular this as follows:

+ In case of implementation scope for one work, for example Work A1, apply the work classification (already determined in point a Example here) of Work A1 is special level;

+ In case of implementation scope for some works, for example Work A2 and A3, apply the work classification (already determined in point a Example here) of Work A2 is Level II (for road bridge) and of Work A3 is Primary Level (for traffic tunnel);

+ In case of implementation scope for all works, apply the work classification (already determined in point a and b Example here) of the works along the route.

3.11 Example 11: Transportation - Lighthouse M

"Lighthouse M" built on an island, 50 m high above ground level outside the construction. The classification of "Lighthouse M" is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

Work "Lighthouse M" is not listed in Table 1.4 Appendix I, therefore the work classification is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to Section 2.2.3; the work classification is determined based on the height of the structure as Level II.

3.12 Example 12 - Agricultural and Rural Development - Farm A

The investment construction project "Farm A", area 30 hectares includes the following works:

- A1: Irrigation water supply system for irrigated area 25 hectares;

- A2: Drainage system for area 29.5 hectares;

- A3 (Greenhouse for seedling cultivation): One-story building, height 12 m, largest span 30 m, total area 4,000 m²²;

and other works: Office building, Workers' accommodation, Internal roads; Substation and power lines; Domestic water supply system (water reservoir and pipelines); Wastewater drainage system; Warehouses; Parking lots, Fence.

The project grade is determined as follows:

The Farm A project includes several main works directly serving irrigation and farming tasks (including works A1, A2, and A3) and other auxiliary works. The classification of these works is determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

a) Determining the classification of main works:

- Work A1: A work with capacity scale and without regulations determining classification based on type and structural scale. According to the provisions at Section 1.5.1.1 Table 1.5 Appendix I, the work classification is determined based on the irrigated area as Level IV.

- Work A2: A work with capacity scale and without regulations determining classification based on type and structural scale. According to the provisions at Section 1.5.1.1 Table 1.5 Appendix I, the work classification is determined based on the drainage area as Level IV.

- Work A3: Without importance level or capacity scale (not listed in Table 1.5 Appendix I), therefore the work classification is determined based on type and structural scale. According to Table 2 Appendix II, this work corresponds to Section 2.1.1; the work classification is determined as Level III.

b) See the determination method for other works presented in this Appendix.

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 3 of this Appendix.

3.13[39] Example 13: Investment Construction Project Passenger Railway Station C

The project includes the following works:

- A1: Railway within the station, track gauge 1,000 mm and crossover track, track gauge (1,435 - 1,000) mm; design speed 100 km/h;

- A2: Two-story station building, total floor area 500 m²²;

- A3: Warehouse, area 2,000 m²², because of the truss span 12 m, height 8 m;

- A4: Pedestrian overpass within the station, width of deck 3.5 m, longest span 40 m;

- A4: Passenger shelter, area Sm=1,000 m²², because of the truss span 9 m, height of roof 4.5 m.

The project grade is determined as follows:

The railway passenger station C construction project includes main works A1 and A2 serving rail transportation and auxiliary works A3, A4, and A5.

a) Determination of the grade of the main complex of buildings:

The main works of this station are not listed in Appendix I Table 1.4, therefore according to the provision at point b clause 3 Article 2 of this Circular, the level of the works is determined based on the highest level of the main works as follows:

- Work A1 corresponds to item 1.4.2.2 of Table 1.4 in Appendix I; the level of the work is determined as Level II (based on design speed);

- Work A2 is not listed in Table 1.4 of Appendix I, therefore the level of the work is determined based on type and scale of structure. According to Table 2 of Appendix II, this work corresponds to item 2.1.1 (Building, Building-like Structure); the level of the work is determined as Level III (the highest level determined based on number of floors);

Thus, the level of the main works of the railway passenger station C is Level II (taken from the level of work A1).

b) Determining the level of works within the station area

- Works A1 and A2 have been determined their levels in section a of this Example;

- Work A3 is not listed in Appendix I, therefore the level of the work is determined based on type and scale of structure. According to Table 2 of Appendix II, this work corresponds to item 2.1.1 (Building, Building-like Structure); the level of the work is determined as Level III (the highest level determined based on height and total floor area);

- Work A4 is not listed in Appendix I, therefore the level of the work is determined based on type and scale of structure. According to Table 2 of Appendix II, this work corresponds to item 2.5.3; the level of the work is determined as Level III (based on the largest span of structure);

- Work A5 is not listed in Appendix I, therefore the level of the work is determined based on type and scale of structure. According to Table 2 of Appendix II, this work corresponds to item 2.1.3 (Large-span Frame Structure); the level of the work is determined as Level IV (the highest level determined based on height and the largest span of structure).

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 1 of this Appendix.

3.14[40] Example 14: Investment Construction Project for Transportation - Aviation (Runway Area)

The investment construction project for the Runway Area of International Airport A (Class 4E airport) includes the following works:

- A1: Runway, size 3,000x45 (m); runway shoulders each side width 7 m;

- A2: Taxiway E1, size 150x30 (m); taxiway shoulders each side width 5 m;

- A3: Taxiway E2, size 150x45 (m); taxiway shoulders each side width 5 m;

- A4: End-of-runway blast pads (RESA), size 240x90 (m);

- A5: Constructing the runway area as prescribed;

- A6: Other auxiliary works:

+ Drainage system: Constructing circular drainage pipes with diameter D1000, length 2,000 m;

+ Drainage ditch (canal) system: Constructing ditch M1 with rubble concrete, size Bđ =1 m, Bm =4 m, Htb =1.5 m; ditch M² with BTXM structure, size Bđ =1 m, Bm =4 m, Htb =1.5 m;

+ Service road: Constructing service roads in the runway area with length 7,000 m, width 3.5 m;

+ Aviation security fence: Constructing aviation security fence with brick structure height 2.45 m, total length 2,500 m.

The project grade is determined as follows:

The investment construction project for the Runway Area of International Airport A includes several main works (including works A1, A2, A3, A4, A5) directly serving transportation and auxiliary works (mentioned in section A6 above). The levels of these works are determined according to the provisions at Clause 2, Article 2 of this Circular as follows:

a) Determining the classification of main works:

- Work A1: Important work without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.6.2 of Table 1.4 in Appendix I, the level of the work is determined as special level.

- Work A2: Important work without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.6.2 of Table 1.4 in Appendix I, the level of the work is determined as special level.

- Work A3: Important work without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.6.2 of Table 1.4 in Appendix I, the level of the work is determined as special level.

- Work A4: Important work without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.6.2 of Table 1.4 in Appendix I, the level of the work is determined as special level.

- Work A5: Important work without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.6.2 of Table 1.4 in Appendix I, the level of the work is determined as special level.

b) Determining the level of auxiliary works (A6):

- Service road: Work not included in item 1.4.6.2 of Table 1.4 in Appendix I and without specific regulations determining level based on type and scale of structure. According to the provisions at item 1.4.1.5 of Table 1.4 in Appendix I, the level of the work is determined as Level IV.

- Drainage system: Work not listed in Appendix I (no importance level or capacity scale), therefore the level of the work is determined based on type and scale of structure. According to item 2.10.2 of Table 2 in Appendix II, the level of the work is determined as Level III.

- Drainage ditch system: Work not listed in Appendix I (no importance level or capacity scale), therefore the level of the work is determined based on type and scale of structure. According to note 5 of Table 2 in Appendix II, determine the level of the work based on reinforced bank structure, corresponding to item 2.9 of Table 2 in Appendix II, the level of the work is determined as Level IV.

- Aviation security fence: Work not listed in Appendix I (no importance level or capacity scale), therefore the level of the work is determined based on type and scale of structure. According to item 2.14.2 of Table 2 in Appendix II, the level of the work is determined as Level IV.

c) Applying the construction level in managing investment and construction activities: The method of determination see Example 1 of this Appendix.

3.15[41] Example 15: Investment Construction Project for Expressway B Route in Two Stages (Phased Investment)

According to the approved investment decision, the investment construction project for Expressway B Route is 200 km long, with a design speed of 120 km/h. On this route, there are the following works:

- Expressway B1: Design speed 120 km/h; pavement width 32.25 m;

- Highway Bridge B2.1: 4 spans, largest span 40 m, bridge pier height 20 m;

- Highway Bridge B2.2: 4 spans, largest span 40 m, bridge pier height 25 m;

- Highway Tunnel B3.1 and B3.2: Mountain tunnel, with concrete lining, each tunnel tube is 300 m long and cross-sectional area 200 m²;

- Toll station B4: Structural frame, with roof, height to top of structure 15 m, maximum span length 40 m.

The investment project for constructing Expressway B Route will be carried out over 60 months in two implementation phases (investment periods):

- Phase 1 of the Expressway B construction project (36 months) includes:

+ Expressway B1 Phase 1 (investment period): Design speed 80 km/h; road base width 17 m; put into operation first.

+ Road bridge B2.1.

+ Traffic tunnel B3.1.

- Phase 2 of the Expressway B construction project (24 months) includes:

+ Expressway B1 Phase 2 (final phase): Design speed 120 km/h; road base width 32.25 m;

+ Road bridge B2.2;

+ Traffic tunnel B3.2;

+ Toll station B4.

The project grade is determined as follows:

a) Determining the level of main works in the Expressway B project:

The Expressway B project is constructed along a route with several main works being invested and constructed in two implementation phases (investment periods), the level of works is determined according to the provisions of Clause 2 and Clause 6 Article 2 of this Circular. as follows:

- Expressway B1 (final phase): Special grade (according to the design speed at item 1.4.1.1 Table 1.4 Appendix I).

- Road bridges B2.1 and B2.2: Level II (highest grade determined according to the height of the bridge pier at item 2.5.1 Table 2 Appendix II).

- Traffic tunnels B3.1 and B3.2: Class I (highest grade determined according to the cross-sectional area of the tunnel based on the clear width at item 2.6.1 Table 2 Appendix II).

b) Determining the level of auxiliary works in the Expressway B project:

- Toll station B4: Class III (highest grade determined according to the height and maximum span length at item 2.1.3 Table 2 Appendix II).

c) Applying the level of works in managing investment and construction activities in Phase 1 of the Expressway B project.

The Expressway B project is invested and constructed in implementation phases (investment periods), therefore, the application of the level of works is as follows:

- Using the level of the construction project to determine the authority as provided in point a clause 1 Article 3 of this Circular: Phase 1 of the Expressway B project is constructed along a route with several main works, according to the provisions of Point b Clause 2 and Clause 4 Article 3 of this Circular,applying the highest level of main works (Expressway B1 final phase, already determined in item a Example above) is special level.

- Using the level of the construction project to manage investment construction activities is regulated from point b to point n clause 1 Article 3 of this Circular; for example, classifying the construction activity capacity of organizations and individuals participating in construction activities for one, some, or all works in Phase 1 of the Expressway B project is implemented according to the provisions of Point d Clause 3 and Clause 4 Article 3 of this Circular as follows:

+ In case the scope of implementation is for one work, such as Expressway B1 Phase 1 (investment period), apply the level of works for Expressway B1 final phase (already determined in item a Example above) is special level;

+ In case the scope of implementation is for some works, such as Works B2.1 and B3.1, apply the level of works (already determined in item a Example above) of Work B2.1 is Grade II (for road bridges) and of Work B3.1 is Grade I (for traffic tunnels);

+ In case the scope of implementation is for all works, apply the level of works (already determined in item a Example above) of the works along the route.

d) Applying the level of works in managing investment and construction activities in Phase 2 of the Expressway B project: Similar to item c/.

[1] Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities is promulgated based on the following grounds:

"Pursuant to the Construction Law dated June 18, 2014; the Law Amending and Supplementing Certain Provisions of the Construction Law dated June 17, 2020;

Pursuant to the Law on Architecture dated June 13, 2019;

Pursuant to the Government Decree No. 06/2021/NĐ-CP dated January 26, 2021 detailing certain provisions on quality management, construction works, and maintenance of construction projects;

Pursuant to Decree No. 175/2024/NĐ-CP dated December 30, 2024, of the Government detailing certain provisions and measures for implementation of the Construction Law on management of construction activities;

Pursuant to Decree No. 33/2025/NĐ-CP dated February 25, 2025 of the Government stipulating the functions, tasks, powers, and organizational structure of the Ministry of Construction;

At the proposal of the Director of the National Construction Quality Supervision Agency;

The Minister of Construction promulgates the Circular amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities."

Circular No. 09/2025/TT-BXD dated June 13, 2025, of the Minister of Construction amending and supplementing certain articles of Circulars under the Ministry of Construction's state management domain related to organizational restructuring, implementation of two-level local government, and delegation of authority to local governments is promulgated based on the following grounds:

"Pursuant to the Law on Issuance of Legal Normative Documents dated February 19, 2025;

Pursuant to Resolution No. 190/2025/QH15 dated February 19, 2025 of the National Assembly on handling certain issues related to the restructuring of the state apparatus;

Pursuant to Decree No. 33/2025/NĐ-CP dated February 25, 2025 of the Government stipulating the functions, tasks, powers, and organizational structure of the Ministry of Construction;

Decree No. 140/2025/NĐ-CP dated June 12, 2025, of the Government on division of authority of two-level local governments in the Ministry of Construction's state management domain;

Decree No. 144/2025/NĐ-CP dated June 12, 2025, of the Government on decentralization and delegation of authority in the Ministry of Construction's state management domain;

At the proposal of the Director of the Legal Department;

The Minister of Construction promulgates the Circular amending and supplementing certain articles of Circulars under the Ministry of Construction's state management domain related to organizational restructuring, implementation of two-level local government, and delegation of authority to local governments."

[2] This clause is amended and supplemented according to the provisions of Clause 1 Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities, which takes effect from May 20, 2025.

[3] This clause is added according to the provisions of Clause 2 Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities, which takes effect from May 20, 2025.

[4] This clause is added according to the provisions of Clause 2 Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities, which takes effect from May 20, 2025.

[5] This clause is added according to the provisions of Clause 2 Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance on application in management of investment and construction activities, which takes effect from May 20, 2025.

[6] This paragraph was added pursuant to Clause 3, Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, issued by the Minister of Construction to amend and supplement certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, issued by the Minister of Construction on classification of construction projects and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[7] This paragraph was added pursuant to Clause 3, Article 1 of Circular No. 02/2025/TT-BXD dated March 31, 2025, issued by the Minister of Construction to amend and supplement certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, issued by the Minister of Construction on classification of construction projects and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[8] Clause 5, Article 33 of Circular No. 09/2025/TT-BXD dated June 13, 2025, issued by the Minister of Construction to amend and supplement certain provisions of Circulars under the Ministry of Construction's administrative domain related to organizational restructuring, implementation of two-level local government, and delegation to local governments, which shall take effect from July 1, 2025, provides as follows:

"5. Transitional provisions for the content stipulated in Article 10 of this Circular."

a) The classification level of construction projects within investment construction projects decided upon before July 1, 2025, shall be determined according to the legal provisions at the time of the investment decision.

b) In cases where construction projects have been submitted to specialized agencies for review or reviewed for adjustment of feasibility study reports or design drawings implemented after the basic design before July 1, 2025, and meet the conditions for review, the determination of the project classification level and its application in managing investment construction activities shall be based on the legal provisions at the time of submission for review.

c) In cases where there is an adjustment to the construction design before July 1, 2025, but it does not change the level of importance, capacity scale, or structural scale, the project classification level shall be determined according to the legal provisions at the time of the investment decision; if the adjustment changes the level of importance, capacity scale, or structural scale, the project classification level shall be determined according to the provisions of this Circular./.

[9] Article 2 of Circular No. 02/2025/TT-BXD dated March 31, 2025, issued by the Minister of Construction to amend and supplement certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, issued by the Minister of Construction on classification of construction projects and guidance for application in investment construction management activities, which shall take effect from May 20, 2025, provides as follows:

“Article 2. Implementation clause

1. This Circular shall take effect from May 20, 2025.

2. The classification level of construction projects within investment construction projects decided upon before the effective date of this Circular shall be determined according to the legal provisions at the time of the investment decision.

3. In cases where construction projects have been submitted to specialized agencies for review or reviewed for adjustment of feasibility study reports or design drawings implemented after the basic design before the effective date of this Circular and meet the conditions for review, the determination of the project classification level and its application in managing investment construction activities shall be based on the legal provisions at the time of submission for review.

4. In cases where there is an adjustment to the construction design from the effective date of this Circular:

a) If the adjustment does not change the level of importance, capacity scale, or structural scale, the project classification level shall be determined according to the legal provisions at the time of the investment decision;

b) If the adjustment changes the level of importance, capacity scale, or structural scale, the project classification level shall be determined according to the provisions of Circular No. 06/2021/TT-BXD amended and supplemented by this Circular./.

Article 31 Circular No. 09/2025/TT-BXD dated June 13, 2025, of the Minister of Construction amending and supplementing certain provisions of Circulars under the State management of the Ministry of Construction related to organizational restructuring, implementation of two-level local administration, and decentralization to local authorities, shall take effect from July 1, 2025, is stipulated as follows:

“Article 31. Effective date

1. This Circular shall take effect from July 1, 2025.

[10] This Section has been amended and supplemented according to the provisions at Item 1 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[11] The phrase "General Bureau and equivalent level" has been abolished according to Clause 2, Article 10 of Circular No. 09/2025/TT-BXD, shall take effect from July 1, 2025.

[12] The phrase "high level" has been abolished according to Clause 2, Article 10 of Circular No. 09/2025/TT-BXD, shall take effect from July 1, 2025.

[13] The phrase "Office of the Party Committee; People's Council, People's Committee at district level" has been abolished according to Clause 2, Article 10 of Circular No. 09/2025/TT-BXD, shall take effect from July 1, 2025.

[14] The phrase "People's Court, People's Procuracy at provincial level" has been replaced by the phrase "People's Court, People's Procuracy at provincial and regional levels" according to Clause 1, Article 10 of Circular No. 09/2025/TT-BXD, shall take effect from July 1, 2025.

[15] The phrase "District Office and equivalent level; People's Court, People's Procuracy at district level" has been abolished according to Clause 2, Article 10 of Circular No. 09/2025/TT-BXD, shall take effect from July 1, 2025.

[16] This Section has been amended and supplemented according to the provisions at Item 2 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[17] This Section has been abolished according to the provisions at Item 3 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[18] This Section has been amended and supplemented according to the provisions at Item 2 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[19] This Point has been amended and supplemented according to the provisions at Item 4 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[20] This Point has been amended and supplemented according to the provisions at Item 4 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification and guidance for application in construction investment management activities, shall take effect from May 20, 2025.

[21] This Section is amended and supplemented pursuant to the provisions of Section 5 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[22] This Section is added pursuant to the provisions of Section 6 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[23] This Section is added pursuant to the provisions of Section 7 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[24] This Section is amended and supplemented pursuant to the provisions of Section 8 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[25] This Section is amended and supplemented pursuant to the provisions of Section 8 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[26] This Section is amended and supplemented pursuant to the provisions of Section 9 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[27] This Section is amended and supplemented pursuant to the provisions of Section 10 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[28] This Point is amended and supplemented pursuant to the provisions of Section 11 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[29] This Section is amended and supplemented pursuant to the provisions of Section 12 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain articles of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[30] This Section is added pursuant to Article 13 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[31] This Section is added pursuant to Article 13 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[32] This Section is added pursuant to Article 13 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[33] This Section is added pursuant to Article 13 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[34] This Section is added pursuant to Article 13 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[35] This Section is amended and supplemented pursuant to Article 14 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[36] This Section is amended and supplemented pursuant to Article 14 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[37] This Section is amended and supplemented pursuant to Article 15 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[38] This Section is amended and supplemented pursuant to Article 16 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[39] This Section is added pursuant to Article 17 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[40] This Section is added pursuant to Article 17 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.

[41] This Section is added pursuant to Article 17 of the Appendix issued together with Circular No. 02/2025/TT-BXD dated March 31, 2025, of the Minister of Construction amending and supplementing certain provisions of Circular No. 06/2021/TT-BXD dated June 30, 2021, of the Minister of Construction on classification of construction works and guidance for application in investment construction management activities, which shall take effect from May 20, 2025.