The front of the embedded anchor foundation pit.doc

The front of the embedded anchor foundation pit, the cable wind rope force direction pit deep within the range of 2.5 times should not have cooking, cables, underground pipelines, etc. (3) embedment anchor in the backfill, the application of the pure land hierarchical compaction compaction, or the height of the backfill should be higher than that of foundation pit ground 400 millimeter above, and shall not be flooded. After the completion of the anchor setting should be ready to take cover engineering records. (4) embedment anchor block set, after the completion of loading rope buckle should be pre tensioning. (5) the main anchor tensile test shall be comply with the design requirements before use. (3) the mast use requirements and stability checking 1. The mast use requirements (1) the use of the mast should be accordance with the provisions of the mast operation instruction not to use overload. (2) the mast assembly should enforce the rules of the operating instructions, the straightness of the mast assembly should be less than one over one thousand of its length, and total deviation should not exceed 20 mm. (3) the mast internode connection bolts, should be symmetrical cross, successive and should meet the specified torque values. (4) the mast base should be according to the load and mast mast vertical position of the geological conditions and surrounding underground design. (5) using tilt mast hoisting equipment, the slope may not exceed 15 degrees. (6) when two sets of sling, sling common role on a lifting point, should add the balance device to balance monitoring. (7) in the process of hoisting, shall be carried out to the straightness of mast structure. 2. Mast stability checking (1) to check the stability of the mast Large equipment hoisting operations, if does not use the mast mast specification range of performance parameters of the use of specific cases, the need to check the stability of the mast. Extension mast height more than, for exam