Situation 2: The combined footing shown supports the two columns as shown. Each column exerts a load P = 53 kN. Draw the shear and moment diagrams for the footing if the reaction is of soil pressure on the footing is assumed to be uniform. Determine the maximum moment (kN-m) on the footing. Use a = 0.5 m, b = 2.9 m a

Situation 2: The combined footing shown supports the two columns as shown. Each column exerts a load P = 53 kN. Draw the shear and moment diagrams for the footing if the reaction is of soil pressure on the footing is assumed to be uniform. Determine the maximum moment (kN-m) on the footing. Use a = 0.5 m, b = 2.9 m a

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Shallow Foundations-bearing Capacity

Section: Chapter Questions

Problem 16.4P: A 2.0 m wide strip foundation is placed in sand at 1.0 m depth. The properties of the sand are: =...

See similar textbooks

Similar questions

P= 40 kN A 40-kN axial load is applied to a short wooden post that is supported by a concrete footing resting on undisturbed soil. Determine (a) the maximum bearing stress on the concrete footing, (b) the size of the footing for which the average bearing stress in the soil is 145 kPa. 120 mm 100 mm
A wall footing has a width of 2 m supporting a wall having a width of 0.22m. The thickness of the footing is 0.44m. and the bottom of the footing is 1.5m below the ground surface. If the gross allowable bearing pressure is 195 kPa, determine the actual critical shear acting on the footing, in KN. P(dead load) = 161 KN/m P(live load) = 160 KN/m yconcrete = 24 KN/m3 ysoil = 19 KN/m3 Depth of top of footing to NGL = 0.9 m concrete cover = 75mm assume db = 16mm dia.
A 4-m square footing is shown in figure B which supports a load Q = 5000 kN. In this problem H1 = 8 m and H2 = 12 m. Calculate: a. The pressure at the base of the footing b. The pressure at the mid height of the clay layer assuming that the stress beneath the footing is spread at a slope of 1H to 2V c. The pressure at the mid height of the clay layer [below the center of the footing using Bousinessq equation assuming point load
A square footing 2.1 m x 2.1 m x 0.27 m thick supports a rectangular column 350mm x 250 mm at its center. Given that: fy = 420 MPa and f’c = 21 MPa and concrete cover to the centroid of steel reinforcement = 100 mm. Use reduction factor for shear 0.75. Determine the maximum nominal load (kN) the footing can sustain based on one way shear.
Two footings, rest in layer of sand 3m thick. The bottom of the footings is 1m above the ground surface. Beneath the sand layer is a 2m clay layer. Beneath the clay is Bedrock. The water table is at a depth of 2m below the ground surface. a. Compute the stress increase at the center of clay layer with respect to footing A in kPa. Assume that the pressure beneath the footing at A is spread at an angle of 2 Vertical is to 1 Horizontal. b. Determine the size of Square Footing B so that the settlement in the clay layer is the same beneath footings A and B.
A square footing is shown below. The footing will carry a gross load of 700 kN. Using a factor of safety 3, determine the required value of B. Assume general shear failure. ?? = ??. ?? , ?? = ??. ??, ?? = ??. ?�
The square footing of size 2.5 m is designed to support a square column of size 300 mm. Effective depth of footing is 450 mm. Safe bearing pressure below footing is 145 kPa at ultimate conditions. The two way shear stress developed will be, MPa. (Upto three decimal places)
QUESTION 2 If e = B/6, the resultant force of the bearing pressure distribution acts at O a corner of the footing Ob third-point of the foundation Oc away from the footing Od center of the footing
Calculate the number of steel bars #6 in a square footing necessary to resist a factored moment of Mu = 50 T- m. The footing has the following characteristics. B = 2.6 m, Fy = 4200 kg/cm2, f'c = 250 kg/cm?, d = 32.5 cm. Assume that the footing is ductile and you can use the reduction factor of 0.9 25 O 12 O 14 16
A square column 422 mm x 422 mm rests on a square footing. The column supports a dead load of 1,014 kN and a live load of 869 kN. The soil bearing capacity is 343.53 kPa. The base of the footing is 1.58 m below the ground. Assume unit weight of concrete of 24 kN/m and unit weight of soil of 16.73 kN/m. The footing has a thickness of 621 mm and the centroid of the main bars is 100 mm from the bottom of the footing. Use fc' = 27.8 %3D MPa, fy 248 MPa. Calculate the number of required number of 16 mm o bars
A 40-kN axial load is applied to a short wooden post that is supported by a concrete footing resting on undisturbed soil. Determine the size of the footing for which the average bearing stress in the soil is 145 kPa. P=40 kN 120 mm 100 mm
A rectangular footing has dimensions shown and is acted upon by a dead load of 653 KN and a live load of 647 kN. The column dimension is 269x677 mm where the shorter dimension is parallel to B. The thickness of the footing is 442mm. f'c=28 MPa and fy=420 MPa for diameter 20mm bars. A=2.9m and B=4.8m Calculate the ratio of the Ultimate Shear Force to Shear Capacity in one-way shear. Consider critical case only.