A building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m?. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay = 19 kN/m3. Adopt Skempton's approach. %3D

A building has to be supported over a raft foundation of dimensions 15 m x 25 m. The soil is clay having unconfined compressive strength of 20 kN/m?. The safe pressure to be applied at the base of raft is 180 kN/m2. The building has provision of basement floors, then recommend the depth of raft foundation. Use FOS = 3.0 and unit weight of clay = 19 kN/m3. Adopt Skempton's approach. %3D

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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ELABORATE Try solving the following problem: Practice Problem: A rigid foundation is subjected to a vertical column load, P = 550 kN, as shown in Figure 4.9. Estimate the elastic settlement due to the net applied pressure, Ao, at the center of the foundation. Given: B = 2 m; L = 3 m; Df = 1.5 m; H = 5 m; Es = 13,500 kN/m²; and μs = 0.5. SAP Foundation BXL D Soil H, Poisson's ratio. E₂ -modulus of elasticity H Rock Figure 4.9 Ag Cengage Leaming 2014
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Refer to Figure 11.3 for the rigid foundation. Given: B=3 ht: L=6 ht: D₁ = 3 ht: H = 15 ft: E = 140 ton/it: p, = 0.4: and net increase of pressure on the founda- tion. A 4000 lb/ft². Estimate the elastic settlement. = Foundation BXI Rigid foundation settlement Ao hstihdbil Flexible foundation settlement H - = Poisson's ratio E modulus of elasticity H Soil Rock
Please round to the nearest One (i.e., 1). No Comma! The results of a plate-load test in a clay soil are shown below. The size of the plate is 0.41m x 0.41m. If a square column foundation (3m x 3m) that should carry a load of 2700KN, what is the estimated settlement of the foundation? Load/unit area Settlement (KN/m²) Load/unit area (kN/m?) (mm) 200 600 800 400 200 300 6. 10 400 13 500 20 20 600 29 30 40 50 60 70 Answer = mm Next page page MacBook Air トII F1 F2 F3 F4 F5 F6 FB F9 @ #3 2$ & 2 3 4 7 8 W R Y U S D F G K Settlement (mm)
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