A circular footing with a 1.22-m diameter is to be constructed 1.07 m below the ground surface. The subsoil consists of a uniform deposit of dense soil having a unit weight of 21.33 kN/m 3, an angle of internal friction of 20° and a cohesion of 57.6 kN/m 2. The groundwater table is at a great depth, and its effect can be ignored. Determine the

A circular footing with a 1.22-m diameter is to be constructed 1.07 m below the ground surface. The subsoil consists of a uniform deposit of dense soil having a unit weight of 21.33 kN/m 3, an angle of internal friction of 20° and a cohesion of 57.6 kN/m 2. The groundwater table is at a great depth, and its effect can be ignored. Determine the

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 16.19CTP: A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a...

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A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, = 26, = 19 kN/m3, and cu = 60 kN/m2. Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
A 2.0 m 2.0 m square pad footing will be placed in a normally consolidated clay soil to carry a column load Q. The depth of the footing is 1.0 m. The soil parameters are: c = 0, =26, = 19 kN/m3, cu = 60 kN/m2 (=0 condition). Determine the maximum possible value for Q, considering short-term and long-term stability of the footing.
Refer to the rectangular combined footing in Figure 10.1, with Q1 = 100 kip and Q2 = 150 kip. The distance between the two column loads L3 = 13.5 ft. The proximity of the property line at the left edge requires that L2 = 3.0 ft. The net allowable soil pressure is 2500 lb/ft2. Determine the breadth and length of a rectangular combined footing.
A circular footing with a 1.5 m diameter is to be constructed 1.22 mbelow the ground surface. The subsoil consists of a uniform depositof dense soil having the following strength parameters:Angle of Friction = 25o Nc = 24.1 Nq = 13.1 Ny = 9.1Cohesion = 48 kN/m2Unit weight of soil = 20.12 kN/m2The groundwater table is at a great depth and its effect can beignored.Determine the following:a) Ultimate bearing Capacity of the soilb) Compute the gross allowable bearing capacity of the soil using afactor of safety of 3.c) Compute the total allowable load that the footing can carry.
0:YA O A comprehensive.. Example (1): A strip footing of width 3 m is founded at a depth of 2 m below the ground surface in a (c - 0) soil having a cohesion c = 30 kN/m? and angle of shearing resistance o = 35°. The water table is at a depth of 5 m below ground level. The moist weight of soil above the water table is 17.25 kN/m. Determine (a) the ultimate bearing capacity of the soil, (b) the net bearing capacity, and (c) the net allowable bearing pressure and the load/m for a factor of safety of 3. Use the general shear failure theory of Terzaghi. Example (2): If the soil in Ex. (1) fails by local shear failure, determine the net safe bearing pressure. All the other data given in Ex. (1) remain the same. Example (3): If the water table in Ex. (1) rises to the ground level, determine the net safe bearing pressure of the footing. All the other data given in Ex. (1) remain the same. Assume the saturated unit weight of the soil ya= 18.5 kN/m'. Example (4): If the water table in Ex.1…
Calculate the size of a square footing on a soil profile consisting of a medium-densesand layer with constant N values, N60 = 30. The dead load is 500 kN and the live load is200 kN. The footing is embedded 1 m into the sand. Groundwater is 2 m below thesurface. Consider that allwable settlement is 25 mm.
7.16 A 650-kN column load is supported on a 1.5-m wide by 2.0-m long by 0.5 m deep spread footing. The soil below is a well graded, normally consolidated sand with y = 17.0 kN/m' and the following SPT N60 values: Depth (m) 1.0 2.0 3.0 4.0 5.0 N60 12 13 13 18 22 The groundwater table is at a depth of 25 m. Using Schmertmann's method and hand compu- tations, compute the total settlement at t = 30 yr.
2) A square footing carries an allowable load of 59130kg including its own weight. The bottom of footing is 1.0m below ground surface and water table coincide with bottom of footing. Assume General shear failure. Unit Weight = 1846kg/cu.m c= 1605kg/sqm Nc = 35 Nq=22 Ny=19 1.0m Sat unit wt = 1956kg/cu.m
Geotechnical problem
A rectangular footing 3m x 2m exerts a pressure of 100kN/m2on a cohesive soil Es= 5x104 kN/m2and µ = 0.5. Estimate the immediatesettlement at the centre, assuming(a) the footing is flexible (b) the footing is rigid (ii) Write about influence of water table in determination of bearing capacity.
A circular footing with a 1.5 m diameter is to be constructed 1.22 m below the ground surface. The subsoil consists of a uniform deposit of dense soil having the following strength parameters: Angle of Friction = 250 Nc = 24.1 Nq = 13.1 Ny = 9.1 Cohesion = 48 kN/m2 Unit weight of soil = 20.12 kN/m2 The groundwater table is at a great depth and its effect can be ignored. Determine the following: a) Ultimate bearing Capacity of the soil
1. Solve and show solution.