Total? rule

1.0. 1? This specification is formulated in order to strengthen the quality management of construction projects, unify the quality acceptance of roofing projects and ensure the quality of projects.

Description: 1.0. 1? In order to strengthen the quality management of construction projects, according to the 16-character reform policy of "separation of inspection and evaluation, strengthening acceptance, improving means and process control" put forward by the Ministry of Construction, this specification is to merge the relevant construction and acceptance specifications with the inspection and evaluation standards of construction projects, form a new engineering quality acceptance specification, and unify the acceptance methods, procedures and quality indicators of roof engineering quality.

1.0.2? This specification is applicable to the acceptance of building roof engineering quality.

Description: 1.0.2? This specification is applicable to the acceptance of roof engineering quality of industrial and civil buildings. According to the general rules, terminology, basic provisions, coiled material waterproof roofing project, coated waterproof roofing project, rigid waterproof roofing project, tile roofing project, thermal insulation roofing project, detailed structure and acceptance of partial projects, it is described in chapters.

1.0.3? Engineering technical documents and contract documents used in roofing construction shall not be lower than the requirements of this specification for construction quality acceptance.

Description: 1.0.3? "Conditions for Quality Management of Construction Projects" stipulates that the construction unit must carry out the construction in accordance with the engineering design drawings and construction technical standards, and shall not modify the engineering design without authorization, and shall not cut corners. According to the engineering design drawings, construction is the premise to ensure that the project meets the design intent.

Since both parties to a construction project contract are the construction unit and the general contractor, the general contractor shall be responsible to the construction unit in accordance with the rights and obligations agreed in the contract. This specification stipulates the construction quality of roofing project, which must be checked and accepted according to the contract, but the contract documents shall not be lower than this specification.

1.0.4? This specification should be used in conjunction with the national standard "Unified Standard for Acceptance of Construction Quality of Building Engineering" GB50300-200 1.

Description: 1.0.4? This specification is based on the principles stipulated in the Unified Standard for Acceptance of Construction Quality of Building Engineering (GB50300-200 1). This specification puts forward requirements for the division of inspection lots, sub-items and divisions (sub-divisions), quality indicators and acceptance procedures of roof engineering, and also emphasizes that the implementation of this specification should be used in conjunction with the Unified Standard for Acceptance of Construction Quality of Building Engineering.

1.0.5? The acceptance of roof engineering construction quality should not only implement this specification, but also comply with the current relevant national standards and specifications.

Description: 1.0.5? This article is based on the Provisions on the Compilation of Engineering Construction Standards (JJB (1996) No.626) issued by the Ministry of Construction, and adopts the typical expression that "the construction quality of roofing projects should not only conform to this specification, but also conform to the provisions of current relevant national standards and codes".

Basic rule

3.0. 1? Roof engineering should be based on the nature, importance and functional requirements of the building, and the waterproof grade of the building roof should be divided into I, II, III and IV. The reasonable service life of waterproof layer should be 25 years, 15 years, 10 years and 5 years respectively, and the material selection and fortification requirements of waterproof layer should be stipulated according to different waterproof grades.

According to different roof waterproof grades and reasonable service life of waterproof layer, choose? Make one or more fortifications with high, medium and low-grade waterproof materials as the basis for designers to design roofing projects. When the waterproof layer of the roof is fortified in various ways, the same coil or coating can be used for compound. The so-called waterproof fortification is a waterproof layer with independent waterproof ability.

3.0.2? Roof engineering should be based on the engineering characteristics, regional natural conditions, etc. According to the fortification requirements of roof waterproof grade, the waterproof structure design should be carried out, and the important parts should be explained in detail; The thickness of roof insulation layer should be determined by calculation.

Description: 3.0.2? According to the Ministry of Construction (1991) No.370 "Several Provisions on Controlling Roof Leakage", the roof waterproof design of building construction projects must be undertaken by personnel with waterproof design experience, and the roof waterproof structure should be carefully treated in combination with the engineering characteristics. Therefore, this article stipulates that when designing a roofing project, designers should determine the roofing waterproof grade and roofing practices of the building according to the nature, importance and functional requirements of the building, and then comprehensively consider the waterproof materials according to the natural conditions, waterproof materials, economic and technical level and other special requirements in different regions, carry out the structural design of the roofing project in accordance with the provisions of the fortification requirements, and draw the design drawings of the roofing project; For cornices, flashing and other important parts, designers should also draw details. The theoretical thickness of insulation layer should be determined by calculation, which is the basis of roof engineering design.

3.0.3? Before the roofing construction, the construction unit shall conduct the blue prints.the design, and prepare the roofing construction scheme or technical measures.

Description: 3.0.3? According to the requirements of the Ministry of Construction (1991) No.837 "Several Provisions on Improving the Quality of Waterproof Works", before the construction of waterproof works, the construction unit shall organize the blue prints.the design to master the detailed structure and related requirements in the construction drawing. On the one hand, check the design drawings, on the other hand, make the construction unit master the requirements of roof waterproof design and avoid mistakes in construction. At the same time, formulate the construction scheme or technical measures to ensure the quality of waterproof engineering.

3.0.4? During roofing construction, a "three inspections" system of self-inspection, handover inspection and full-time personnel inspection shall be established, and complete inspection records shall be kept. After each working procedure is completed, it shall be inspected and accepted by the supervision unit (or construction unit), and the next working procedure can be started only after it is qualified.

Description: 3.0.4? Between the various working procedures of roof engineering, the problems existing in the previous working procedure are often not solved, but are covered up by the next working procedure, leaving hidden quality problems for roof waterproofing. Therefore, it is necessary to strengthen inspection and acceptance according to procedures and levels, that is, on the basis of qualified self-inspection by operators, handover inspection between procedures and inspection by full-time quality personnel should be carried out, and the inspection results should be fully recorded, and the construction of the next procedure can only be carried out after inspection and acceptance by the supervision unit (or construction unit), so as to achieve the purpose of eliminating quality hidden dangers.

3.0.5? The waterproof layer of roof engineering should be constructed by a waterproof professional team that has passed the qualification examination. The operator shall hold the post certificate issued by the local construction administrative department.

Description: 3.0.5? Waterproof engineering construction, in fact, is the reprocessing of waterproof materials, which must be carried out by waterproof professional team to ensure the quality of waterproof engineering. This article refers to the waterproof professional team awarded the qualification certificate by the local construction administrative department after comprehensive evaluation of the scale, technical level and performance of waterproof construction enterprises. Operators should receive waterproof professional training, reach the required level of operation technology, and the local construction administrative department will issue a work permit. For non-waterproof professional teams or non-waterproof workers, the local quality supervision department should order them to stop construction.

3.0.6? Waterproof, heat preservation and heat insulation materials used in roofing engineering should have product certificate and performance test report, and the varieties, specifications and performance of the materials should meet the current national product standards and design requirements.

After the materials enter the site, they shall be sampled and reinspected according to the provisions in Appendix A and Appendix B of this specification, and the test report shall be put forward; Unqualified materials shall not be used in roofing construction.

Description: 3.0.6? Waterproof and thermal insulation materials should not only have factory quality certificates such as product certificate and performance test report, but also have the test report of sampling inspection and certification of the product designated by the local construction administrative department, and their quality must meet the national product standards and design requirements. In order to control the quality of waterproof and thermal insulation materials, the incoming materials shall be sampled and reinspected according to the provisions in Appendix A and Appendix B of this specification. If unqualified materials are found to enter the site, they shall be ordered to leave, and shall never be used in the project.

3.0.7? During the construction of next working procedure or adjacent projects, protective measures shall be taken for the completed roof.

Description: 3.0.7? The finished product protection of roof engineering is a very important issue. After the roof construction is finished, many projects will go to other operations, such as installing antennas, installing advertising brackets, stacking scaffolding tools and so on. , leading to local damage and leakage of waterproof layer. Therefore, after the waterproof layer construction is completed, attention should be paid to the protection of finished products.

3.0.8? Pipes, equipment or embedded parts protruding from the roof shall be installed before the waterproof layer construction. After the waterproof layer of the roof is completed, it is not allowed to make holes or hit with heavy objects.

Description: 3.0.8? This article emphasizes that pipes, equipment and embedded parts protruding from the roof should be installed before the waterproof layer construction. If people install the waterproof layer after the construction is completed, drilling holes or heavy objects will destroy the integrity of the waterproof layer and easily lead to roof leakage.

3.0.9? After the completion of the roofing project, the detailed structure, joints, protective layers, etc. Appearance inspection should be carried out according to the relevant provisions of this specification, and water spraying or water storage inspection should be carried out.

Description: 3.0.9? Roof engineering must be leak-free to ensure the use requirements. Whether it is the waterproof layer itself or the roof detail structure, we can only see whether the surface characteristics meet the design and specification requirements and whether the naked eye will leak through visual inspection. After rain or continuous watering for 2 hours, the roof can be tested to see if there is any leakage in the roof project. It is also stipulated that the roof that can be checked for water storage shall not be less than 24 hours.

3.0. 10? The insulation layer and waterproof layer of the roof are strictly forbidden to be constructed in rainy days, snowy days and strong winds of level 5 or above. The construction environment temperature shall meet the requirements in Table 3.0. 10.

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