GB-50207-2002 ENG 英文版.pdf

中华人民共和国国家标准 national standard of the peoples republic of china p gb 50207-2002 屋面工程质量验收规范 code for acceptance of construction quality of roof issued on april 1, 2002 implemented on june 1, 2002 ministry of construction of the peoples republic of china jointly issued by state quality supervision inspection quarantine general office 此文档为预览版！ 需要原版请发站内信和我联系！ 2 national standard of the peoples republic of china code for acceptance of construction quality of roof gb 50207-2002 chief compilation department: construction department of shanxi province approval department: ministry of construction of p. r. china implementation date: june 1, 2002 china architecture those materials unqualified shall not be used in roof engineering. 3.0.7 when construction is carried out for next procedure or neighboring work, take protective measure for finished part of roof. 3.0.8 piping and equipment or embedded parts, etc extending out of roof shall be placed and completed before construction of waterproof layer. after roof waterproof layer is completed, it is not allowed to cut hole or boring or hit with heavy substance on it. 3.0.9 after roof works are completed, shall make visual inspection for detail structures, joints, and protection layer according to relevant regulation of the code, and shall perform tricking water or impoundment inspection. 3.0.10 it is strictly forbidden to construct roof insulation layer and waterproof layer in rainy days, snow days and days with wind in scale five or more than five. construction ambient temperature shall meet requirement of table 3.0.10. 此文档为预览版！ 需要原版请发站内信和我联系！ 6 table 3.0.10 ambient temperature for construction of roof insulation layer and waterproof layer item construction ambient temperature adhibiting insulation layer hot asphalt is not lower than 10; cement slurry is not lower than 5 asphalt waterproof roll material not lower than 5 high polymer modified asphalt waterproof roll material cold adhibiting method not lower than 5; heat fusion method not lower than -10 synthetic macromolecule waterproof roll material cold adhibiting method not lower than 5; hot air welding method not lower than -10 high polymer modified asphalt waterproof paint solvent type not lower than -5; water soluble type not lower than 5 synthetic macromolecule waterproof paint solvent type not lower than -5; water soluble type not lower than 5 rigid waterproof layer not lower than 5 3.0.11 dividing of sub engineering works and work items for roof engineering shall meet the requirement of table 3.0.11. table 3.0.11 dividing of sub engineering works and work items for roof engineering engineering work sub engineering work work items roll waterproof roof insulation layer, leveling layer, roll material waterproof layer, detail structures film waterproof roof insulation layer, leveling layer, film waterproof layer, detail structures rigid waterproof roof pea gravel concrete waterproof layer, sealing material caulking, detail structures tile roof plain tile roof, oil felt tile roof, metal plate roof, detail structures roof engineering heat insulation roof elevated overhead roof, impounded roof, planted roof 3.0.12 inspection and approval of construction quality for all work items for roof engineering shall comply with following regulation: 1 fro roll material waterproof roof, film waterproof roof, rigid waterproof roof, tile roof and heat insulation roof, the random check shall be made at one area per every 100m2 of roof surface, each area10m2, and not less than 3 areas. 2 joint is sealed waterproof, random check is made at one area every 50m, each area 5m, and not less than 3 areas. 3 all detail structures shall be inspected according to the content of work items. 此文档为预览版！ 需要原版请发站内信和我联系！ 7 4 roll waterproof roof engineering 4.1 roof leveling layer 4.1.1 this section is suitable for the integrated leveling layer with its waterproof layer base course using cement slurry, pea gravel concrete or asphalt slurry. 4.1.2 thickness and technical requirement of leveling layer shall meet requirement of table 4.1.2. table 4.1.2 thickness and technical requirement of leveling layer class type of base coursethickness (mm) technical requirement integrated concrete 1520 integrated or plate type material insulation layer 2025 cement slurry leveling layer assembly type concrete slab, loose material insulation layer 2030 volumetric ratio 1:2.51:3 (cement: sand), cement strength grade not lower than grade 32.5 pea gravel concrete leveling layer loose material insulation layer 3035 concrete strength grade not lower than c20 integrated concrete 1520 asphalt slurry leveling layer assembly type concrete slab, integrated or plate type material insulation layer 2025 mass ratio 1:8 (asphalt: sand) 4.1.3 when assembly type rebar concrete slabs are used for base course of leveling layer, shall meet the following regulations: 1 slab end and side joint shall be grouted with pea gravel concrete; its strength grade shall be not lower than c20. 2 when width of slab joint is more than 40mm or narrow at top and wide at bottom, the structure rebar shall be placed inside slab joint. 3 slab end joint shall be sealed. 4.1.4 water discharge slope of leveling layer shall meet design requirement. for plain roof, when using structure sloping, shall be not less than 3%, when using material sloping, shall be 2%; when longitudinal sloping is applied for cullis and eaves gutter, shall not be less than 1%, water fall head at bottom of gutter shall not exceed 200mm. 4.1.5 for connecting point between base course and the projected roof structures (parapet wall, gable wall, garret window wall, distortion joint, chimney, etc) and tu