For the cellar of a new house, a hole is dug in the ground, with vertical sidesgoing down 2.40 m. A concrete foundation wall is built all the way across the10.50 m width of the excavation. This foundation wall is 0.177 m away fromthe front of the cellar hole. During a rainstorm, drainage from the street fillsup the space in front of the concrete wall, but not the cellar behind the wall.The water does not soak into the clay soil. Find the force that the watercauses on the foundation wall. For comparison, the weight of the water isgiven by 2.40 m x 10.50 m x 0.177 m x 1000 kg/m3 x 9.80 m/s2= 43.7kN.N.

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Step 1

Consider the depth of the vertical side be h, the width of the excavation be w, the density of the water be ρ, the gauge pressure at the bottom be Pb, the gauge pressure at the top, that will be zero because the depth at top from the datum is zero, be Pt,

The given values are,

Step 2

The average pressure on the foundation wall d...

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