Roofing waterproof grade
1, Grade I, especially important buildings or buildings with special waterproof requirements,
For example, the National Center for International Political Activities, the National Museum, the Archives, the International Airport and important memorial buildings, such as the Great Hall of the People, the State Guesthouse, the National Library and the Palace Museum. Buildings that have an impact on international reputation, places that will cause irreparable losses to treasures once leaked, industrial buildings, warehouses and laboratory buildings, buildings that will cause serious disasters once leaked, etc. , all belong to the first-class fortification, and the reasonable service life is 25 years. The waterproof layer shall be made of synthetic polymer waterproof coiled material, polymer modified asphalt waterproof coiled material, metal plate, synthetic polymer waterproof coating, fine stone concrete and other materials, and the fortification requirements shall be above level 3 waterproof fortification;
2. Class II important buildings and high-rise buildings, such as large public buildings, important museums, libraries, hospitals, star-rated hotels, theaters, halls, stations, large factories, constant temperature and humidity workshops, laboratories, villas, etc. , including 12 storey high-rise buildings, with a reasonable service life of 15 years. The waterproof layer should be made of polymer modified asphalt waterproofing membrane, synthetic polymer waterproofing membrane, metal plate, synthetic polymer waterproofing coating, polymer modified asphalt waterproofing coating, fine stone concrete, flat tile, linoleum tile and other materials, and the fortification requirement is secondary waterproofing fortification;
3. The third category of ordinary buildings includes ordinary industrial and civil buildings, ordinary houses, ordinary office buildings, schools, hotels, etc. The reasonable service life is 10 year. The waterproof layer should be made of three-felt and four-oil asphalt waterproofing membrane, polymer modified asphalt waterproofing membrane, synthetic polymer waterproofing membrane, metal plate, polymer modified asphalt waterproofing coating, synthetic polymer waterproofing coating, fine stone concrete, flat tile, linoleum tile and other materials.
4. Class IV non-permanent buildings, such as simple dormitories, workshops and temporary waterproof buildings planned to be rebuilt, shall have a reasonable service life of 5 years. The waterproof layer can be made of two-felt and three-oil asphalt waterproofing membrane, polymer modified asphalt waterproof coating and other materials, and the fortification requirements are waterproof.
Waterproof material selection
1, which has good weather resistance (weather resistance) and certain tolerance to light, heat and ozone;
2. It has water seepage resistance and acid and alkali resistance;
3. It has certain adaptability to external temperature and external force, and the tensile strength of the material should be high, which can withstand the deformation caused by temperature difference change, various external forces and expansion and cracking of the base;
4. Good integrity, which can not only maintain its own cohesion, but also firmly bond with the grassroots to form a stable watertight whole.
The above is the relevant introduction of this article. I believe you will have a simple understanding of it after reading it. If necessary, follow the 1 home network for more information.