![]() ![]() In clay soils, the depth of the first strut below the ground surface should be less than the depth of the tensile crack. During construction, it is recommended that struts should have a minimum vertical spacing of 3m. Hence, the load-carrying capacity depends on the slenderness ratio and flexural buckling capacity. Struts in braced cuts behave like horizontal columns. The excavation depth is greater than about 6 mÄesign of the various components of a braced cut.Clay is assumed to be undrained, and pore water pressure is not considered.Sand is assumed to be drained with no pore water pressure.The water table is below the bottom of the cut.The actual pressure distribution depends on the construction sequence and the flexibility of the wall. The pressure envelope is sometimes referred to as the apparent pressure envelope.When using the pressure envelops in design, it is very important to keep the following in mind
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