| 摘要 |
A shoring system of the type having one or more vertically arranged frame sections and telescopic extension members extendable therefrom. A frame brace bar extends laterally between and is slidably connected to the extension members at the top of the frame section to provide lateral stability and to serve as an anchor point for diagonal braces to the extension members. Jack screws are disposed on the ends of the extension members and are provided with load-bearing sleeves which fit radially over the jack staffs and inner stabilizing shafts which extend telescopically into the jack staffs and are of a length greater than the length of the threaded portion of the jack staff.
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