Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Transcribed Image Text:Example 5
A square foundation (B * B) has to been constructed. Assume yd = 16.5 kN/m³,
Ysat = 18.55 kN/m, o' = 34°, Dr = 1.22m and water table at 0.61m and the gross
allowable load, Qall with FS = 3 is 667.2 kN Determine the size of the footing,
(use Vesic bearing capacity factors).
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- Please correct answerarrow_forwardA continuous footing is to be designed to carry a wall load of 7 kips/ft. The soil shear strength parameters are as follows: Sy = 700 psf and 0 = 0-deg. Foundation Depth, D = 2.5 ft and Soil Unit Weight, y = 110 Ib/ft°. Unit weight of concrete = 150 lb/ft°. Determine the necessary footing width to carry the above column load if a factor of safety of 2.5 is desired. The water table is at great depth and therefore, has no impact on bearing capacity. a) Ultimate Bearing Capacity of the footing (in Ib/ft) using Terzaghi's equation = .(Report to nearest whole number) b) Allowable Bearing Capacity of the footing (in Ib/ft-) using Terzaghi's equation = ...(Report to nearest whole number) c) Footing width (in ft) required = (Report to the nearest two decimals)arrow_forward1. A continuous footing is shown in the figure below. Using Terzaghi's ultimate b.c. equation and bearing capacity factors, determine the gross allowable load per unit area (qall) that the footing will carry. Given: y = 112 pcf, c' = 450 psf, ' = 22°, D = 4 ft, B = 3 ft, and F.S. = 3. gall Unit weight of soil y c' $' 2. Repeat problem #1 using the general bearing capacity equation. Use the appropriate assumptionsarrow_forward
- Use Terzaghi's equation and Terzaghi's Tablearrow_forwardPlease solve it within 30 minutesarrow_forwardSubject: Principles of Foundation Design (Use NCSP) A rectangular footing is to be used to support a 300x400 (*400mm side is parallel to the long dimension of the footing) column loaded with 420 kN dead load and 540 kN live load. One side of the footing is 4.0m. Use effective soil pressure of 70 kPa. f'c=35 MPa and fy=420 MPa. Use minimum steel ratio for longitudinal bars as 0.0018. •Calculate the required thickness of the footing (mm) based on wide beam shear. db=16mm. Size of footing should be multiples of 10mm (Answer: 300) •Calculate the required thickness of the footing based on two-way shear. db=16mm (Answer: 430) • Calculate the required number of 16mm bars along long direction. . Use the governing thickness based on shear requirements. (Answer: 22)arrow_forward
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