On site supervision scheme of a high-rise residential project in Jiangsu
1-27 floors of frame and shear wall structure (garage and civil air defense works are the first floor of frame structure), slab raft foundation. 1、 Scope of on-site supervision: foundation stage: pile foundation works, post cast strip concrete pouring, waterproof concrete pouring, detailed structure treatment of waterproof layer; Main structure stage: structural concrete pouring. 2、 Site supervision procedures: 1. For the above subdivisional works subject to site supervision, the Contractor shall submit a construction application to the Project Supervision Department 24 hours in advance, and the Chief Supervision Engineer shall sign the application form after confirming that the preparations are ready and arrange the site supervision personnel to carry out site supervision 3、 Responsibilities of on-site personnel: 1. Check the on-site quality inspection personnel of the construction unit to be on duty, the special type of work personnel to be on duty with certificates, and the preparation of construction machinery and building materials; 2. Follow the shift on site to supervise the construction implementation scheme of key parts and processes and the mandatory standards of engineering construction; 3. Check the quality inspection report of the mobilized building materials, building components and fittings, equipment and commercial concrete, and supervise the construction unit on the site for inspection or entrust a qualified third party for re inspection; 4. Keep on-site supervision records and supervision diary, and keep the original data of on-site supervision. 4、 Content of on-site supervision: (I) Quality supervision of waterproof concrete works Waterproof concrete structure is both a load-bearing structure and a waterproof function. The basement leakage is mainly caused by poor construction quality. The supervising engineer shall supervise the contractor to ensure the construction quality strictly 2. Pre supervision of waterproof concrete construction quality 3. Quality supervision during waterproof concrete construction (3) Quality supervision of structural concrete works (4) Quality supervision of waterproof works 1. Pre supervision of waterproof construction quality (1) Check whether the materials used for waterproof meet the design requirements and construction specifications, and check the certificate of conformity and test report. (2) The surface of waterproof base course must be firm and dry without sanding and hollowing; The surface of the base course shall be flat, and the maximum gap between the base course and the 2m ruler shall not exceed 3mm. The surface of the base course shall be clean and the internal and external corners shall be made into arc or obtuse angle. 2. Quality supervision during waterproof construction (1) Follow the shift to check whether the waterproof materials meet the requirements and whether the cold primer oil meets the requirements of the construction specifications. After the acceptance is qualified, the concealed works acceptance records shall be handled. (2) The waterproof layer and its deformation joints, embedded pipe fittings, internal and external corners, turning points and other special parts of the additional layer must meet the design requirements and construction specifications, and the acceptance records of concealed works shall be handled after the acceptance is qualified 5000 words