Requirements and quality control for grid installation

Requirements and quality control for grid installation

Requirements for grid installation:

Tighten the bolt to the corresponding position to ensure its stability and ensure that there are no visible cracks in the sleeve contact with the naked eye.

When installing the rod, the bending degree of the rod should not exceed the safety range specified by the corresponding country.

The components that have been installed on the 3 grid frames must have a clean surface, no scratches, no missing parts, no obvious gaps, and no dents or misalignment. The corresponding interfaces must be accurately matched, and if there are any misalignment, they must be replaced in a timely manner according to the requirements.

The corresponding thickness and quality requirements of the paint must meet the error range specified in the design specifications to ensure the overall chromaticity requirements of the grid.

The deviation error of the node center position of the already built grid structure should be less than 1.5mm, and the length of the single cone grid should not exceed 1.5mm

After all the grid structures are installed, the longitudinal and transverse lengths of the grid structures must be less than L/2000 and not less than or equal to 30mm. The center offset of the support must be less than L/3000 and not less than or equal to 30mm

The height difference between adjacent supports should be less than or equal to 15mm, and the height difference between the highest point and the lowest point of the support should be less than or equal to 30mm

Ensure that the no-load deflection is less than L/800

9 The quality inspector shall prepare measuring tools such as middle Theodolite, Dumpy level, steel tape, auxiliary tools cone, steel ruler, etc. for inspection.

Quality inspection personnel need to continuously stay at the construction site, keep track of the construction situation, make necessary records, improve corresponding information, and report the situation to the quality engineer and other superiors in a timely manner, and actively and closely cooperate with the work.

Civil engineering control for quality control of grid installation: It is required to ensure that the components are placed in the corresponding positions, not disorderly and without damage or loss, ensuring that the surface of the embedded plate is clean and tidy, the axis position, standard height, and geometric dimensions are accurate. In addition, it is also necessary to ensure that the longitudinal and transverse length deviation is less than 30mm, the center deviation of the embedded parts is less than 30mm, the adjacent embedded parts are less than 15mm, and the maximum height difference of the corresponding surrounding embedded parts is less than 30mm