PRINCIPLES OF GEOTECH.ENGINEERING >LL+M
9th Edition
ISBN: 9781337583879
Author: Das
Publisher: CENGAGE L
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Chapter 16, Problem 16.14P
Redo Problem 16.13 with the following data: gross allowable load = 184,000 lb, γ = 121 lb/ft3, c′ = 0,
16.13 A square footing (B × B) must carry a gross allowable load of 1160 kN. The base of the footing is to be located at a depth of 2 m below the ground surface. If the required factor of safety is 4.5, determine the size of the footing. Use Terzaghi’s bearing capacity factors and assume general shear failure of soil. Given: γ = 17 kN/m3, c′ = 48 kN/m2,
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Students have asked these similar questions
6. [Soil Bearing Capacity] (
Assume the general shear failure and use a factor of safety 2.8. Determine the follow
N. = 25.13 , N, = 12.72, N,y = 8.34
a. The gross allowable bearing capacity.
b. Net Allowable bearing capacity
c. The safe load that the footing can carry.
). A circular footing 3 m in diameter is shown below.
%3D
Ground surface
Y = 18.5 kN/m²
C = 80 kPa
0 = 25°
1.1 m
Dr = 1.8 m
Water table
Tse = 19.2 kN/m?
Diameter =
3 m
A footing 2.5 × 2.5 m carries a pressure of 400 kPa at a depth of 1m in sand. The saturated unit weight of the sand is 20 kN/m3 and the unit weight of the sand above the water table is 17 kN/m3 . The design shear strength parameters are ?′ = 0 kPa and ?′ = 40o .Determine the bearing capacity of the footing for the following cases using EC7 - Design Approach 1:a. The water table is 5 m below ground levelb. The water table is 1 m below ground levelc. The water table is at ground level with vertical seepage upwards under ahydraulic gradient of 0.2.
A square footing of 4 m side is placed at
1 m depth in a sand deposit. The dry unit
weight (y) of sand is 15 kN/m³. This
footing has an ultimate bearing capacity
of 600 kPa. Consider the depth factors:
d = d, = 1.0 and the bearing capacity
%3D
%3D
factor : N, = 18.75. This footing is
%3D
placed at a depth of 2, in the same soil
deposit. For a factor of safety of 3.0 as
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Chapter 16 Solutions
PRINCIPLES OF GEOTECH.ENGINEERING >LL+M
Ch. 16 - A continuous footing is shown in Figure 16.17....Ch. 16 - Refer to Problem 16.1. If a square footing with...Ch. 16 - Redo Problem 16.1 with the following: = 115...Ch. 16 - Redo Problem 16.1 with the following: = 16.5...Ch. 16 - Redo Problem 16.1 using the modified general...Ch. 16 - Redo Problem 16.2 using the modified general...Ch. 16 - Redo Problem 16.3 using the modified general...Ch. 16 - Redo Problem 16.4 using the modified general...Ch. 16 - Prob. 16.9PCh. 16 - If the water table in Problem 16.9 drops down to...
Ch. 16 - Prob. 16.11PCh. 16 - A square footing is subjected to an inclined load...Ch. 16 - A square footing (B B) must carry a gross...Ch. 16 - Redo Problem 16.13 with the following data: gross...Ch. 16 - Refer to Problem 16.13. Design the size of the...Ch. 16 - Prob. 16.16PCh. 16 - Prob. 16.17PCh. 16 - Refer to the footing in Problem 16.16. Determine...Ch. 16 - Figure 16.21 shows a continuous foundation with a...Ch. 16 - The following table shows the boring log at a site...
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- a) A square footing placed at a depth of 1 m is required to carry a load of 1000 kN. Find the required size of footing given the following data. C = 10 kPa, ϕ = 38o, γ = 19 kN/m3, Nc = 61.35, Nq = 48.93, Nγ= 74.03 and F = 3.Assume water table is at the base of footing.arrow_forwardA continuous footing has the following properties. Using Terzaghi’s bearing capacityfactors, determine the gross allowable load per unit area (qall) that the footing can carry.Assume general shear failure. 3544.12 psfGiven: ∂sat = 115 pcf Df = 2ftc =400 psf B = 2.5 ftφ= 250 FS= 4.0 Solve if water table is located (a) 2 ft , (b) 3 ft below ground surface. ANSWERS 3407.55, 3472.6arrow_forwardWhat is the net ultimate bearing capacity of a footing 2.5 mx 2.5 m built on a sand of unit weight 16 kN/m³ and having an angle of friction of 25°. The depth of the footing is 1.5 m below the ground surface. No = 5.6 and N₁ = 3.2.arrow_forward
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