In the construction project, all raw materials such as: steel, cement, sand, stones, concrete, etc., approach to the inspection process is what?
. the material into the construction unit should notify the supervision unit of the appearance of the material, the relevant information (including materials, certificate, factory qualification, inspection reports, etc.) inspection. . if the initial inspection to meet the drawings and technical specifications, the construction unit in the supervision of the unit under the need for sampling inspection. . after the inspection and obtain the test report, after passing the inspection by the construction unit of the formal inspection of the material, the supervision unit to confirm the application before the use of the project.
The sampler according to the intestinal pattern of both the role of the Office of the Office of the United States and the United States, the Ministry of Science and Technology, the Ministry of Science and Technology, the Ministry of Education, the State Administration of Taxation, Retrieve the test report, attached to the material (equipment) reported after the back of the certificate, fill out the inspection report submitted to the professional supervision engineer for approval.
Steel is a 60T sampling sampling once, cement, sand, stone is 200T sampling once, the concrete is the concrete pouring site randomly selected, sampling and specimen stay should meet the following requirements: . each mixing 100 and no more than 100m3 with the . each work class mix the same mix of concrete less than . the sampling should not be less than once; . when a continuous pouring 1000m. the same mix of concrete per 200m3 Sampling shall not be less than once; . each floor, the same mix of concrete, the sampling shall not be less than once; . each sampling at least a set of standard maintenance specimens, with the conditions of maintenance of the number of liens According to the actual needs to determine. Inspection methods: inspection of construction records and test pieces strength test report. For concrete structures with impervious requirements, the concrete specimens should be randomly sampled at the pouring site. The same project, the same with the intestinal standard spot both Hanchen Bibi Leibi than the concrete, the sampling should not be less than once, the number of indwelling groups can be determined according to actual needs. Inspection method: Check the test specimen impermeability test report.
