Refer to the braced cut shown below. Given: unit weight = 17 kN/m3,  Friction angle = 35degrees, and c = 0. The struts are located at 3 m center-to-center in the plan.   a.    Draw the earth-pressure envelope and determine the strut loads at levels A, B, and C.  b.    Determine the sheet-pile section modulus  c.    Determine the section modulus of the wales at level B Assume that   = 170 MN/m2

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Q: 4.5 m A Sand y = 16 kN/m 4'= 38° c' = 0 2.5 m B 3 m 1.5 m Figure P10.1

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A: Find reactions:∑ MA=0RB3-21.50.8-15.82.1=0RB=16.8kN∑ Fy=0 R+RB-21.5-15.8=0  RA=20.5kN Max shear…

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Q: Q2. For the retaining wall and the profile below calculate; (Ye -25 kN/m³, ys-25 kN/m³) a) The base…

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Q: = 16 kN/m², c; = 21 kN/m² = 17 kN/m³ cz= 22 kN/m? 18 kN/m³ cs = 23 kN/m?

A: a  γϕ =γl1+ω =20.631+14 =18.0965 kn/m3b γϕ =1-naGγW1+WG =1-na2.67×9.811+0.14×2.67 =18.0965⇒0.0508…

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Q: Refer to the braced cut shown in Figure P15.1. Given: γ = 17 kN/m3, Φ' = 35º, and c' = 0. The struts…

A: Sand unit weight=17 kN/m3 Internal frictionϕ=35° Cohesion(C)=0

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Q: IM 3M² 8m. 3M Im B SAND 8=18.5 KN =0 m3 4= 38 le 4M- Develop: A) the lateral earth pressure diagram…

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Q: Refer to the braced cut shown in the figure for which y= 20 kN/m², o'~23°, and e' = 0. 2.0000 The…

A: Given : Density of soil, γ = 20 kN/m3Angle of internal friction, ϕ' = 23°Cohession, c' = 0The struts…

Braced cuts

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, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.