How many tons of steel support
(2) the second layer is mainly used for long arm excavator excavation, excavation to the ground under 4.8m and 8.3m, erection of the second, 3 support. (3) third, four layer earth most of the small excavator excavation and artificial excavation, unearthed on both sides of the dump truck crane, transportation, excavation to the ground under the 11.5m and 14.7m, set up fourth, 5 support. (4) when the excavation to the base 200mm, from the artificial bottom excavation to the design elevation, to prevent over excavation.
The excavation of the foundation pit is divided into 3 large mechanical excavation and the 1 Artificial Excavation of the bottom of a total of 4 steps: (1) the first layer of the main use of short arm excavator excavation, excavation to the ground under the 0.9m, the erection of the first support.
First -0.4m; -4.3 m; third -7.8m; -11.0 m; fifth -14.2 M. If you need to find Lee l3o first 83 student 7L counseling o9l4 search according to the above arrangement
