A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is

A 300 mm square bearing plate settles by 15 mm in a plate load test on a cohesive soil when the intensity of loading is 0.2 N/mm2. The settlement of a prototype shallow footing 1 m square under the same intensity of loading is

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Shallow Foundations: Ultimate Bearing Capacity

Section: Chapter Questions

Problem 6.17P: 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 circular footing with a 1.52 m diameter is to be constructed 1.22 m below the groundsurface. Subsoil consists of a uniform deposit of dense soil having angle friction of 250 andcohesion c = 4.8 kN/m2 . Compute for the total allowable load the footing can carry, using a factor of safety of 3.0, ∂ = 20.12 kN/m3
A 3 ft square footing is founded at a depth of 2.5 ft on saturated clay and carries an unfactoredvertical column load of 65 k. The underlying clay has an undrained shear strength of 1,500 lb/ft2.Compute the allowable shear load this column can carry using ASD with a sliding factor ofsafety of 1.5.
A circular footing of 10 m dia for a column is 10 resting on ground surface. Failure occurred at aload of 1500 T. If the soil is purely clay, find out the cohesive strength of the soil.
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 1.8 m square, 2 m deep footing supports a service load of 570 kN. It is supported on a clayey sand. A dilatometer test run at the site has returned the following modulus profile. Compute the footing settlement.
Plate-load tests were conducted in-situ for a commercial building project in Rizal, where preliminary investigation indicated the presence of sandy soil. The apparatus had a circular plate with a radius of 0.38m. The results suggests an ultimate bearing pressure of 349 kN/m2. The plate was placed at a depth of 1.90m from the surface, with the soil having a unit weight of 16.87kN/m3. If a circular footing with radius of 1.15m will be used, what must be the maximum net live load (kN) if the net dead load is 349kN? Consider a safety factor of 3.5 and ASD Plate-load tests were conducted in-situ for a commercial building project in Rizal, where preliminary investigation indicated the presence of sandy soil. The apparatus had a circular plate with a radius of 0.38m. The results suggests an ultimate bearing pressure of 349 kN/m2. The plate was placed at a depth of 1.90m from the surface, with the soil having a unit weight of 16.87kN/m3. If a circular footing with radius of 1.15m will be…
. A small villa constructed in Shatti Al Qurum area is resting on footings. One of its square footing of 1.8 m size carries a load intensity of 150 kN/m2 at a depth of 1.30 m in a soil having cohesion intercept of 20 kN/m2 and the angle of internal resistance is equal to 35o. The saturated unit weight of sub soil is 19.0 kN/m3 and unit weight above water table is 17.5 kN/m3. Determine the factor of safety with respect to shear failure for following conditions of soil: i. Water table is 3.7 m below natural ground surface ii. Water table in the middle of ground level and the base of the footing. iii. Water table is 1.2 m below ground level. iv. Water table is 2.0 m below natural ground surface [2.0] [2.0] [2.0] [2.0] v. Plot a neat graph to for the result. vi. Justify the reason of choosing a particular analysis to solve this problem. [1.5]
A 3 ft square footing carries a sustained load of 10 k. It is placed on the surface of a 30 ft thicksaturated overconsolidated clay underlain by dense sand. Based on laboratory tests, the clay can be adequately modeled using the e@log@p method. The laboratory tests provide the follow-ing compressibility information for the clay: g = 123 lb/ft3Cc1 + e0= 0.06Cr1 + e0= 0.002sm′ = 900 lb/ft2 The groundwater table is located at the ground surface. Compute the settlement of the footing.
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.
1. A soil anchor 12" in diameter is placed in soil having shear strength of 2.1 tons/sq. ft. The anchorage length is 35 ft. behind the slip plane. Using a factor of safety of 2.0, what is the safe working capacity of the soil anchor based on the shear strength of the soil?
Scenario The wall footing at right is to be constructed to carry an inclined load at 85 degrees with the horizontal, as shown. Assume that there is impenetrable bedrock below the Sample point shown in the figure. 1) Calculate the expected primary settlement of the soil at the Sample point. Also, determine the time it will take for 60% of the expected primary settlement to occur. 2) Determine the factor of safety against bearing failure of the soil for the wall footing if qult of the soil is 160 kN/m2.
Problem 1 A 3m x 3m square footing is constructed at a depth of 2m in a 26m deep clay layer with following soil properties: g =16.5kN/m3, Normally Consolidated Clay, eo= 0.65, Cc = 0.25,ms=5 and Es= 6.0 MN/m2. If there is a 1000kN structural load on the footing, calculate the consolidation settlement of the footing. A 2m X 2m footing carrying 1400kN load is constructed in a site with 2.5m thick clay layer under a 2.5m thick sand layer. If the footing and the ground water table are located at 1.5m below the surface, calculate the consolidation settlement of the footing. You may assume the following soil properties: for sand gsat = 19.25kN/m3 and gt = 7kN/m3, and for clay eo= 0.65, Cc = 0.25, Cs = 0.06, s’p = 200kN/m2 and gsat =19.25kN/m3. A 1882kN load is carried by a 2.6m x 2.6m square footing at a depth of 1.4m in a 30 m deep sand layer. Given the following soil properties for soil calculate the total settlement of the footing after 10 years. Where soil properties are: g = 15.9…