Code for Quality Acceptance of Building Decoration and Renovation Engineering (Basic Regulations)

3.1.1 Architectural decoration and renovation projects must be designed and complete construction drawing design documents must be issued.

3.1.2 The unit responsible for the design of building decoration and renovation projects should have corresponding qualifications and establish a quality management system. Quality issues caused by design reasons should be the responsibility of the design unit.

3.1.3 Architectural decoration design should comply with relevant regulations such as urban planning, fire safety, environmental protection, and energy conservation.

3.1.4 The unit responsible for the design of building decoration and renovation projects shall conduct necessary understanding and on-site investigation of the building, and the design depth shall meet the construction requirements.

3.1.5 The design of building decoration and renovation projects must focus on the structural safety and primary functional use of the main building. When it comes to modifying or adding loads to the main body and load-bearing structure, the original structural design unit or a qualified design unit must verify the relevant original data and confirm the safety of the existing building structure.

Explanation:

With the rapid development of China's economy and the improvement of people's living standards, the construction and decoration industry has become an important emerging industry, with an annual output value of over 100 billion yuan and more than 5 million employees. The construction and decoration industry has created beautiful and comfortable living and activity spaces for the public, accumulated wealth for society, and has become an indispensable part of modern life. However, there are also some non-standard and even quite dangerous practices in decoration and renovation activities. For example, arbitrarily dismantling and modifying load-bearing walls in order to expand the usable area. In order to ensure that under no circumstances will the building decoration activities themselves lead to a decrease in the safety of the building, or affect the main functions of the building such as waterproofing, heating, ventilation, power supply, water supply, gas supply, etc., this provision is specially formulated.

The fire prevention, lightning protection, and seismic design of building decoration and renovation projects shall comply with the provisions of current national standards.

When pipelines inside walls or ceilings may freeze or condense, anti freezing or anti condensation design should be carried out.

3.2 Materials

3.2.1 The variety, specifications, and quality of materials used in building decoration and renovation projects shall comply with the design requirements and current national standards. When there are no requirements for the design, it should comply with the current national standards. It is strictly prohibited to use materials that have been officially phased out by the state.

3.2.2 The combustion performance of materials used in building decoration and renovation projects shall comply with the current national standards "Code for Fire Protection Design of Interior Decoration of Buildings" (GB50222), "Code for Fire Protection Design of Buildings" (GBJ16), and "Code for Fire Protection Design of Tall Buildings" (GB50045).

3.2.3 The materials used in building decoration and renovation projects shall comply with the relevant national standards for the limit of harmful substances in building decoration and renovation materials.

3.2.4 All materials shall be inspected for variety, specifications, appearance, and dimensions upon arrival. The material packaging should be intact, with product qualification certificates, Chinese manuals, and relevant performance testing reports. Imported products should undergo commodity inspection according to regulations.

3.2.5 The types and items of materials that need to be retested after entering the site shall comply with the provisions of each chapter of this specification. At least one set of samples of the same variety and type of incoming materials produced by the same manufacturer should be taken for retesting. If there are other agreements in the contract, they should be executed according to the contract.

Explanation:

3.2.5 Re inspection of incoming materials is a confirmation method adopted to ensure the quality of building decoration and renovation projects. In the current situation where there is a high incidence of counterfeit and shoddy building materials in the market, conducting retesting can help prevent unqualified materials from being used for decoration and renovation projects, and also help solve the problem of inconsistent sample and supply quality. The first section "General Provisions" of each chapter of this specification clearly specifies the materials and items that require retesting. When determining the project, three factors were considered: first, ensuring safety and primary functionality; second, minimizing the cost of retesting; and third, selecting projects with shorter testing periods. The regulation on the sampling quantity is the minimum requirement. In order to achieve the purpose of quality control, questionable samples should be selected first when sampling, or the sampling quantity can be increased by mutual agreement.

3.2.6 When the state stipulates or contracts stipulate that witness testing should be conducted on materials, or when there is a dispute over the quality of materials, witness testing should be conducted.

3.2.7 The unit responsible for testing building decoration materials should have corresponding qualifications and establish a quality management system.

Effective measures must be taken to prevent damage, deterioration, and environmental pollution of materials used in building decoration and renovation projects during transportation, storage, and construction.

3.2.9 The materials used in building decoration and renovation projects should be treated with fire prevention, anti-corrosion, and insect prevention according to design requirements.

Explanation:

3.2.9 Building decoration and renovation projects use a large amount of wooden materials, including wood and various artificial wooden boards, which often fail to meet fire protection requirements without fire treatment. The fire prevention regulations related to building decoration and renovation engineering are mainly the "Code for Fire Protection Design of Interior Decoration of Buildings" (GB50222), the "Code for Fire Protection Design of Buildings" (GBJ16), and the "Code for Fire Protection Design of Tall Buildings" (GB50045), which also have relevant provisions. After the design personnel provide the combustion performance and treatment methods of the materials used according to the above specifications, the construction unit should strictly select and treat the materials according to the design, and shall not replace the materials or reduce the treatment steps.

3.2.10 Materials prepared on site, such as mortar, adhesives, etc., should be prepared according to design requirements or product specifications.

3.3 Construction

3.3.1 The unit undertaking the construction of building decoration and renovation projects should have corresponding qualifications and establish a quality management system. The construction unit shall prepare a construction organization design and it shall be reviewed and approved. The construction unit shall carry out construction in accordance with relevant construction technology standards or approved construction technology plans, and shall implement quality control throughout the entire construction process.

Personnel responsible for the construction of building decoration and renovation projects shall have corresponding qualification certificates for their respective positions.

3.3.3 The construction quality of building decoration and renovation projects shall comply with the design requirements and the provisions of this specification. Quality problems caused by construction that violates the design documents and the provisions of this specification shall be the responsibility of the construction unit.

3.3.4 During the construction of building decoration and renovation projects, it is strictly prohibited to make unauthorized changes to the building's main body, load-bearing structure, or primary functions in violation of the design documents; It is strictly prohibited to dismantle or modify supporting facilities such as water, heating, electricity, gas, and communication without design confirmation and approval from relevant departments.

3.3.5 The construction unit shall comply with relevant laws and regulations on environmental protection and take effective measures to control the pollution and harm caused to the surrounding environment by various dust, exhaust gas, waste noise, vibration, etc. on the construction site.

3.3.6 The construction unit shall comply with relevant laws and regulations on construction safety, labor protection, fire prevention, and gas defense, establish corresponding management systems, and equip necessary equipment, tools, and signs.

3.3.7 Building decoration and renovation projects should be constructed after the quality acceptance of the substrate or base layer is qualified. Before decorating and renovating existing buildings, the base layer should be treated to meet the requirements of this standard.

Explanation:

The quality of the substrate or base layer is an important factor affecting the quality of building decoration and renovation projects. For example, oil stains on the base layer may cause quality problems such as delamination and peeling in plastering and painting works; Insufficient strength of the substrate or base layer may lead to the detachment of the decorative layer, and even cause serious accidents such as falling injuries. In order to ensure quality and avoid rework, this clause is specially formulated.

3.3.8 Before the construction of building decoration and renovation projects, there should be samples of the main materials or sample rooms (pieces), which should be confirmed by relevant parties.

Explanation:

Generally speaking, it is difficult to accurately and completely express the decoration effect of building decoration and renovation projects in language; Sometimes, certain construction quality issues also require a more intuitive evaluation basis. Therefore, before construction, it is usually necessary to determine the production of sample rooms, sample pieces, or sealed material samples based on the project situation. Sample rooms are suitable for hotel rooms, residences, office buildings, and other projects. Sample pieces are suitable for exterior wall decoration or indoor public activity areas. The main material samples refer to materials used in building decoration projects, such as wallpaper, paint, stone, etc., which involve evaluation indicators such as color, gloss, patterns, and patterns. Regardless of the method used, it should be confirmed by relevant parties such as the construction party, the contractor, and the supplier.

3.3.9 For building decoration and renovation projects that use insulation materials for walls, the type, variety, specifications, and construction process of the insulation materials used should meet the design requirements.

3.3.10 The installation and height of pipelines, equipment, etc. should be completed before the construction of building decoration and renovation projects. When synchronous construction is necessary, it should be completed before the construction of the decorative layer. Decoration and renovation projects shall not affect the use and maintenance of pipelines, equipment, etc. Building decoration and renovation projects involving gas pipelines must comply with relevant safety management regulations,

3.3.11 The electrical installation of building decoration and renovation projects shall comply with the design requirements and the provisions of the current national standards. It is strictly prohibited to bury wires directly without going through pipes.

3.3.12 The environmental conditions for indoor and outdoor decoration construction should meet the requirements of construction technology. The construction environment temperature should not be lower than 5 ℃. When construction must be carried out at temperatures below 5 ℃, effective measures should be taken to ensure the quality of the project.

During the construction process of building decoration and renovation projects, it is necessary to protect semi-finished and finished products to prevent pollution and damage.

Before the acceptance of building decoration and renovation projects, the construction site should be cleaned up.