4. Figure 1 shows the cross section of a proposed excavation in a layered soil profile. Walls of the cut need to be supported using a bracing system as shown below. Soil properties and location of groundwater surface on either side of excavation are indicated on figure. The support at the base of wall exerts no moment on the wall (i.e., hinge connection). Assume pin connection between bracing and the wall. Assuming the wall used to support the cut is smooth and can yield sufficiently, determine the load that the bracing system has to be designed for. 200 psf surcharge Proposed Excavation Fine Sand
4. Figure 1 shows the cross section of a proposed excavation in a layered soil profile. Walls of the cut need to be supported using a bracing system as shown below. Soil properties and location of groundwater surface on either side of excavation are indicated on figure. The support at the base of wall exerts no moment on the wall (i.e., hinge connection). Assume pin connection between bracing and the wall. Assuming the wall used to support the cut is smooth and can yield sufficiently, determine the load that the bracing system has to be designed for. 200 psf surcharge Proposed Excavation Fine Sand
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4. Figure I shows the cross section of a proposed excavation in a layered soil profile. Walls of the
cut need to be supported using a bracing system as shown below. Soil properties and location of
groundwater surface on either side of excavation are indicated on figure. The support at the base
of wall exerts no moment on the wall (i.e., hinge connection). Assume pin connection between
bracing and the wall. Assuming the wall used to support the cut is smooth and can yield
sufficiently, determine the load that the bracing system has to be designed for.
200 psf surcharge
Proposed Excavation
Fine Sand
O'= 30°
y=1 10 pcf
Bracing system
Coarse Sand
O'- 35°
Y Ys 120 pef
Figure 1
-10 ft
-10 ft
-10 ft-
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