GB 50411-2019 English PDFGB 50411: Historical versions
Basic dataStandard ID: GB 50411-2019 (GB50411-2019)Description (Translated English): Code for acceptance of energy efficient building construction Sector / Industry: National Standard Classification of Chinese Standard: P32 Classification of International Standard: 91.010.01 Word Count Estimation: 223,276 Date of Issue: 2019-05-24 Date of Implementation: 2019-12-01 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation GB 50411-2019: Code for acceptance of energy efficient building construction---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 This standard is formulated in order to strengthen the construction quality management of building energy-saving projects, unify the construction quality acceptance standards of building energy-saving projects, and ensure the energy-saving effect of building projects. 1.0.2 This standard is applicable to the construction quality acceptance of enclosure structures, heating and air conditioning, power distribution lighting, monitoring and control, and renewable energy building energy-saving projects in new construction, expansion and reconstruction of civil construction projects. 1.0.3 The requirements of this standard for the construction quality of building energy-saving projects are the basic requirements, and the requirements for the quality of energy-saving projects in relevant engineering technical documents and contract documents shall not be lower than those specified in this standard. 1.0.4 The construction quality acceptance of building energy-saving projects should not only comply with this standard, but also comply with the relevant current national standards. 2 terms 2.0.1 insulation mortar It is a slurry made by mixing inorganic cementitious materials, additives, fillers and lightweight aggregates, and adding water in proportion to the use, also known as thermal insulation mortar. 2.0.2 Glass shading coefficient The ratio of the solar radiant heat gain through the window glass to the solar radiant heat gain through the standard 3mm transparent window glass. 2.0.3 transparent curtain wall Visible light can be transmitted directly into the indoor curtain wall. 2.0.4 Luminaire efficiency Under the same conditions of use, the ratio of the total luminous flux emitted by the luminaire to the total luminous flux emitted by all light sources in the luminaire. 2.0.5 lighting power density (LPD) lighting power density The room or place of the building, the installed lighting power per unit area (including the power consumption of the light source, ballast, and transformer). Unit. W/m2. 2.0.6 site acceptance The activity of conducting appearance quality inspection and checking of specifications, models, technical parameters and quality certification documents of materials and equipment entering the construction site and forming corresponding acceptance records. 2.0.7 inspection inspection 3.4.1 The building energy-saving project is a sub-project of the unit project. The division of its sub-divisional projects and sub-projects shall comply with the following regulations. 1 The division of building energy-saving subdivision projects and sub-projects should comply with the provisions in Table 3.4.1. 2 Building energy-saving projects can be checked and accepted according to sub-projects. When the engineering volume of building energy conservation sub-projects is large, sub-projects can be divided into several inspection batches for acceptance. Table 3.4.1 Division of Building Energy Conservation Subdivision Projects and Subprojects Continued Table 3.4.1 3.4.2 When the acceptance of building energy-saving projects cannot be divided into sub-projects or inspection batches according to the requirements of Article 3.4.1 of this standard, the construction, supervision, construction and other parties can negotiate to divide the inspection batches; the acceptance items, acceptance contents, acceptance Standards and acceptance records shall comply with the provisions of this standard. 3.4.3 When inspecting by counting method, unless otherwise specified in this standard, the minimum sampling quantity of the inspection lot should comply with the provisions in Table 3.4.3. Table 3.4.3 Minimum Sampling Quantity of Inspection Lot 3.4.4 When in the same unit engineering project, the acceptance content of building energy saving sub-projects and inspection batches is the same as that of other professional sub-projects, sub-projects or inspection batches, and the acceptance results are qualified, other sub-projects can be used. Acceptance of the results, do not need to repeat the inspection. The project acceptance data of the building energy conservation division shall be filed separately. 4 Wall energy saving project4.1 General provisions 4.1.1 This chapter is applicable to the construction quality acceptance of building wall energy-saving projects using wall insulation materials or components such as panels, slurry, blocks and prefabricated composite wall panels. 4.1.2 The wall energy-saving project to be constructed after the completion of the main structure shall be constructed after the quality acceptance of the grassroots. project acceptance. The wall energy-saving project constructed at the same time as the main structure shall be checked and accepted together with the main structure. 4.1.3 For wall energy-saving projects, the following parts or contents shall be inspected for hidden works, and there shall be detailed written records and necessary image data. 1 The base layer to which the insulation layer is attached and its surface treatment; 2 bonding or fixing the insulation board; 3 The thickness of the enclosed insulation material; 4 Anchor piece and anchor node method; 5 Reinforcing net laying; 6 The thickness of the surface layer; 7 Treatment of thermal bridge parts of the wall; 8 Position, interface treatment, board seams, structural nodes and fixing methods of thermal insulation decorative panels, pre-installed thermal insulation panels or prefabricated thermal insulation wall panels; 9 The interface of on-site spraying or pouring organic insulation materials; 10 thermal insulation block wall; 11 Energy-saving construction methods at various deformation joints. 4.1.4 The thermal insulation materials of wall energy-saving projects shall be protected against moisture, water and fire during transportation, storage and construction. 4.1.5 The division of inspection batches for wall energy-saving project acceptance shall comply with the following regulations unless otherwise specified in this chapter. 1 For walls using the same material, process and construction method, the area of the thermal insulation wall after deducting the openings of doors and windows shall be divided into an inspection batch for every 1000m2; 2 The division of inspection batches can also be determined by the construction unit and the supervisory unit through consultation based on the principle of being consistent with the construction process and facilitating construction and acceptance; 3 When the sampling inspection is carried out by counting method, the sampling quantity shall meet the provisions of Article 3.4.3 of this standard. 4.2 Master Control Project 4.2.1 The materials and components used in the wall energy-saving project shall be inspected and accepted on site, and the acceptance results shall be inspected and approved by the supervisory engineer, and corresponding acceptance records shall be formed. The quality certification documents and related technical data of various materials and components should be complete, and should meet the design requirements and the current relevant national standards. Inspection method. observation, ruler inspection; check quality certification documents. Quantity to be inspected. according to the incoming batch, 3 samples are randomly selected for inspection in each batch; the quality certification documents shall be checked according to the factory inspection batch. 4.2.2 When the materials and products used in the wall energy-saving project enter the site, the following properties shall be re-inspected, and the re-inspection shall be a witness sampling inspection. 1 Thermal conductivity or thermal resistance, density, compressive strength or compressive strength, tensile strength perpendicular to the direction of the board surface, water absorption rate, and combustion performance (except for non-combustible materials) of thermal insulation materials; 2 Heat transfer coefficient or thermal resistance, mass per unit area, tensile bond strength, and combustion performance (except for non-combustible materials) of wall energy-saving and shaped products such as composite insulation boards; 3 Heat transfer coefficient or thermal resistance, compressive strength, and water absorption of wall energy-saving and shaped products such as thermal insulation blocks; 4 Solar reflectance of reflective insulation materials, hemispherical emissivity; 5 Tensile bond strength of bonding material; 6 Tensile bonding strength and folding ratio of plastering materials; 7 Enhance the mechanical properties and corrosion resistance of the mesh. Inspection method. check the quality certification documents; random sampling inspection, check the re-inspection report, in which. thermal conductivity (heat transfer coefficient) or thermal resistance, density or mass per unit area, and combustion performance must be in the same report. Quantity to be inspected. For products of the same manufacturer and the same variety, according to the amount of materials used for the thermal insulation wall area after deducting the openings of doors and windows, re-inspection should be performed once when the area is less than 5000m2; one time should be added for every 5000m2 increase in area. Multiple unit projects of the same engineering project, the same construction unit and the same period of construction can be combined to calculate the sampling area. When complying with the provisions of Article 3.2.3 of this standard, the capacity of the inspection lot can be doubled 4.2.3 Prefabricated components, stereotyped products or complete sets of technologies shall be used for external thermal insulation of external walls, and the same supplier shall provide supporting component materials and type inspection reports. The type inspection report shall include the weather resistance and wind pressure resistance performance inspection items as well as the name, production unit, specification and model and main performance parameters of the supporting components. Inspection method. check the quality certification documents and type inspection report. Inspection Quantity. Full Inspection 4.2.4 The freeze-thaw test results of the plastering materials used for external thermal insulation in severe cold and cold areas should meet the requirements for use in the lowest temperature environment in the area. Inspection method. Check the quality certification documents. Inspection Quantity. Full inspection. 4.2.5 Before the construction of the wall energy-saving project, the base layer should be treated according to the requirements of the design and special construction plan, and the treated base layer should meet the requirements. Inspection method. observe and inspect against the design and special construction plan; check the acceptance records of concealed projects. Inspection Quantity. Full inspection. 4.2.6 The structure of each layer of the wall energy-saving project shall meet the design requirements, and shall be constructed in accordance with the approved special construction plan. Inspection method. observe and inspect against the design and special construction plan; check the acceptance records of concealed projects. Inspection Quantity. Full inspection. 4.2.7 The construction quality of the wall energy-saving project must meet the following requirements. 1 The thickness of the thermal insulation material shall not be lower than the design requirements. 2 The bonding or connection between the insulation board and the base layer and between the structural layers must be firm. The connection mode, tensile bonding strength and bonding area ratio of the insulation board and the base layer shall meet the design requirements. The tensile bonding strength between the thermal insulation board and the base layer shall be tested on-site, and shall not be damaged at the interface. The bonded area ratio shall be tested for peeling. 3 When thermal insulation slurry is used for external insulation, the thermal insulation slurry with a thickness greater than 20mm should be constructed in layers. The bonding between the thermal insulation slurry and the base layer and between layers must be firm, and there should be no delamination, hollowing and cracking. 1 The structural performance, thermal performance and connection method with the main structure of the thermal insulation wallboard should meet the design requirements, and the connection with the main structure must be firm; 2 The seam treatment, structural joints and caulking methods of thermal insulation wall panels shall meet the design requirements; 3 The joints of the thermal insulation wall panels shall not leak. Inspection method. check the type inspection report, factory inspection report and concealed project acceptance records. Control design observation inspection; water spray test inspection. Quantity to be inspected. Type inspection report and factory inspection report shall be inspected in full; board seams shall not leak, and one place shall be inspected when the area of the insulation wall surface after deducting door and window openings is within 5000m2, and one place shall be added for every 5000m2 increase in area; Other items shall be randomly inspected according to the provisions of Article 3.4.3 of this standard. 4.2.13 When the external wall adopts thermal insulation decorative board, it shall meet the following requirements. 1 The installation structure of the thermal insulation decorative board and the connection method with the base wall should meet the design requirements, and the connection must be firm; 2 The seam treatment and structural joints of the thermal insulation decorative panels shall meet the design requirements; 3 The joints of the thermal insulation decorative panels shall not leak; 4 The anchors of the thermal insulation decorative board shall fix the decorative panel of the thermal insulation decorative board firmly. Inspection method. check the type inspection report, factory inspection report and concealed project acceptance records. Control design observation inspection; water spray test inspection. Quantity to be inspected. type inspection report and factory inspection report are all inspected; no leakage of the board seams shall be carried out according to the area of the thermal insulation wall after deducting the openings of doors and windows, and one place shall be inspected when the area is within 5000m2, and one place shall be added for every 5000m2 increase in area; other items According to the provisions of Article 3.4.3 of this standard for random inspection. 4.2.14 The special construction plan prepared before the construction of the external wall thermal insulation project using the fire isolation belt structure shall comply with the current industry standard "Technical Regulations for Building External Wall External Thermal Insulation Fire Protection Belt" JGJ 289, and a model wall shall be made. The materials and techniques used shall be the same as those of the special construction plan. Inspection method. check the special construction plan, check the model wall. Inspection Quantity. Full inspection. 4.2.15 The composition materials of the fire isolation belt shall match with the composition materials of the external wall insulation. The fire isolation belt should be installed on site with factory prefabricated products, and should be reliably connected with the base wall. The surface layer material of the fire isolation belt should be consistent with the external insulation of the outer wall. Inspection method. observe and inspect against design. Inspection Quantity. Full inspection. 4.2.16 The combustion performance grade of the insulation material of the external thermal insulation and fireproof isolation belt of the building exterior wall shall be Class A, and shall comply with Article 4.2.3 of this standard. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 50411-2019_English be delivered?Answer: Upon your order, we will start to translate GB 50411-2019_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 50411-2019_English with my colleagues?Answer: Yes. The purchased PDF of GB 50411-2019_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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