Homework%2020%20-2009

Homework%2020%20-2009 - 2500 psf, = 0, = 112 pcf. Calculate...

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The University of Missouri Department of Civil Engineering Assigned: Monday Dec. 7, 2009 Due: Not turned in CE 3400 - Homework No. 20 Bearing Capacity of Footings on Clay 1. A long, strip footing is 8 feet wide. Its base is 5 feet below the ground surface. The soil is relatively uniform, saturated clay above and below the level of the base of the footing. The water table is at a depth of 7 feet below the ground surface. The clay has an average unconfined compressive strength (q u Calculate the ) of 2.0 tons/sq.ft. The clay has a water content of 32 percent and a specific gravity of solids of 2.75. net 2. An 6-foot square footing is to be placed at a depth of 4 feet in a deposit of clay. The clay has the following properties: c =
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Unformatted text preview: 2500 psf, = 0, = 112 pcf. Calculate the column load (in kips) which the footing can safely support with a factor of safety of 3.0. How would your answer change if the top 4 feet of the soil deposit were sand? Explain fully. safe bearing pressure for the footing for a factor of safety of 3.0. 3. A strip footing is to support a column load of 80 kips per lineal foot of length. The footing is to be embedded 5 feet below the ground surface. No data are available on the shear strength of the soil, but information from a nearby site indicates that the unconfined compressive strength (q u ) is about 4.0 tons/sq.ft. Determine the width of the footing if the factor of safety against bearing capacity failure is to be 3.0....
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This note was uploaded on 06/21/2010 for the course CE 3400 taught by Professor Brentrosenblad during the Fall '09 term at Missouri (Mizzou).

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