According to the "Construction Engineering Quality Management Regulations" to witness the sampling requirements, that kind of material without sampling inspection, can be used for workers
Construction units must be in accordance with the engineering design requirements, construction technology standards and contract, the building materials, construction components, equipment and commercial concrete inspection, inspection should be written records and signature.
Need to witness the sampling test are: cement, building sand, construction stone, concrete, building mortar, reinforced concrete structure steel, steel welded parts, reinforced mechanical connections, brick and brick blocks, road and foundation backfill materials, Energy - saving materials. Waterproof materials are not required for testing. See the "Construction Engineering Test Witness Sampler Manual" (third edition) China Construction Industry Press.
Except for cement, building sand, building stone, concrete foolish seal, bronze, reinforced concrete structure, reinforced concrete parts, reinforced concrete blocks, blocks and blocks, roads and Basic backfill materials, energy-saving materials, etc. need to witness the sampling test, the other materials are not sampling inspection. Can be used for construction. What specific material, to see the specific construction drawings in the specific requirements of the material.
