What should be brought to the middle acceptance of the steel structure 5

What is intermediate acceptance, which side are you

The acceptance content of the steel structure includes: the quality acceptance report of the main structure division.

The acceptance content of the steel structure includes: the quality acceptance report of the main structure division. Quality and safety supervision and disclosure records; Ground treatment.

information (if foundation treatment is required for this project); Commercial concrete factory certificate, concrete test block test report, concrete impermeability test report, etc.

The acceptance of the main structure is a key node in the whole project construction process. In order to ensure the smooth acceptance of the main structure of the five parties, combined with the architectural structure of Transfar Highway Port, the design department has compiled a list of materials that should be prepared for the acceptance of the main structure.

At the same time, it is aimed at engineering construction.

The main inspection items of the main body of the structure are prepared, which is used for the pre-acceptance of the main structure (which is conducive to finding problems and rectifying them in time) or formal acceptance, and can also be used for the inspection content of the project management personnel in the construction project or the acceptance of the intermediate structure.

The returned steel, welding materials, coating materials and tight liquid fasteners used in the steel structure shall have quality certificates and must meet the design requirements and the provisions of the current standards. In addition to the quality certificate of the manufacturer, the raw materials entering the site shall be witnessed by Party A and the supervisor in accordance with the requirements of the contract and the current relevant regulations, and shall be subject to on-site witness sampling, sample delivery, inspection and acceptance, and inspection records. And provide inspection reports to Party A and the supervisor.

The surface of the steel is not allowed to have defects such as scarring, cracks, folding and delamination; There should be no delamination and slag inclusion at the end edge or fracture of the steel. Those with the above defects should be stacked separately for research and treatment. The depth of corrosion on the surface of the steel does not exceed 1 2 of the negative deviation value of its thicknessAnd should meet the national standards of grade C and above.

It is strictly forbidden to use electrodes with peeling coatings or rusty cores, damp agglomerated or melted fluxes, and rusty welding wires.

Material substitution for steel structure engineering. Due to the variety, specification, performance and other characteristics of individual steel can not meet the design requirements of the need for material substitution, the design unit should agree to leak the liquid and reply to the substitute documents, generally with high-strength materials instead of low-strength materials, thick instead of thin. The torque coefficient of the high-strength bolted connection pair should be re-checked.

1) Raw materials and finished products are accepted at the site; All raw materials and semi-finished products involving safety and function shall be re-inspected in accordance with relevant regulations, and witness sampling and sample delivery;

2) Each process is subject to quality control according to the requirements of the construction process, and the process inspection is carried out;

3) Carry out handover inspection between relevant professional types of work;

4) The quality acceptance of the concealed project shall be carried out before it is closed.

What are the acceptance requirements for steel structural components in construction projects? What are the steps? Please see the article of Zhongda Consulting.

After the completion of the processing and production of steel components, it should be accepted in accordance with the provisions of the construction drawings and the national standard "Code for Construction and Acceptance of Steel Structure Engineering" (GB50205-2001), and some are also divided into factory acceptance and site acceptance

The product also presents certificates and technical documents.

Construction drawings and design change documents.

Preparation of protocol documents for the handling of technical issues.

Quality certificates or test reports for steel, connecting materials, coating materials.

The welding process qualification report is slow.

Test report of anti-slip coefficient of friction surface of high-strength bolt, nondestructive inspection report of weld and coating test data.

Inspection records of major components.

Pre-assembly record, due to the limitation of transportation and hoisting conditions, and the complexity of the silver meter, sometimes the components should be divided into two or several sections of the factory, in order to ensure the smooth progress of the installation on the site, pre-assembly (when pre-assembly is required) before leaving the factory.

Component shipping and packing lists.