2. The compression member shown is pinned at both ends and supported in the weak direction at mid-height. A service load of 400 kips, with equal parts of dead and live load, must be supported. Use Fy = 50 ksi and select the lightest W-shape. 400 I 18′

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slope…