The steel pipe support should be pre assembled on the ground according to the measured width of the foundation pit.
One end of each support should be connected to a 1.
45m long movable end (with an adjustable margin of 55cm), and the other end should be connected to a fixed end (with a length of 0.
2m or 0.
3m).
After assembly, it should be placed on a solid floor and straightened with hemp thread at both ends.
The flatness of the support pipe should be measured with a steel tape or a level, and the connection of the support pipe joints should be checked for tightness, whether the support pipe is damaged or deformed, and whether the two ends of the support pipe are flat.
After passing the inspection, use red paint to number the support, indicating the length of the support and the specific installation position.
At the same time, check the integrity of the lifting equipment, welding equipment, and combination jacks required for applying pre stress axial force to ensure that the support installation operation can proceed normally and continuously.
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