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10. A proposed attice building will include an 8.1 bin square, 3-ft deep spread ating that...
2. A 5-ft square, 2-ft deep spread footing is subjected to a concentric vertical load of 60 k and an overturning moment of 30 ft-k. The overturning moment acts parallel to one of the sides of the footing, the top of the footing is flush with the ground surface, and the ground water table is at a depth of 20 ft below the ground surface. Compute the minimum and maximum bearing pressures, d show the distribution of bearing pressure in...
a 39 in wide ,24 inch deep continuous footing supports a wall load of 12 kips/ft. this footing underlain by pure medium dense sand with D' = 31° and γ = 122 Lb/ft3. The ground water table is at a depth of 4 ft below the ground surface. Determine the allowable bearing capacity of this foundation using a factor of safety FS=2.5
A 3 m square footing carries a vertical downward load of 900 kN. The embedment depth is 1 m. The soil beneath this footing has the following properties: y = 18 kN/m”, Ysat = 20 kN/mº, c' = 5 kPa, and o' = 36º. The groundwater table is at a depth of 2 m below the ground surface. Compute factor of safety against bearing capacity failure.
3. The bearing capacity of shallow foundations (i.e. footings) depends on the soil shear strength (ie. ф and c). The ultimate bearing capacity (qultnei) of the soil is calculated using the following equation: Dr qult.net bearing capacity failure surface i. Frictional resistance along failure surface due to self-weight of soil below footing level footing level. Ny. No, and Ng are dimensionless bearing capacity factors that depend on the ii. Cohesive resistance along failure surface below footing level. iii. Frictional resistance...
help please A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
A 100,000 lb load has to be carried by a concrete square foundation placed 3 ft below the surface of a saturated sandy soil having the following properties: γt = 120 pcf E = 2x105 psf φ' = 30deg ν = 0.25 c' = 0 What footing width will be required for a factor of safety with respect to the ultimate bearing capacity of 3.0, and for a maximum settlement of 1". The water table is at the ground surface.
1. (8 points) A 190-k column load is to be supported on a 10-ft square, 3-ft deep spread footing underlain by young, normally consolidated sandy soils. The results of a representative CPT sounding at this site are as follows: Depth (ft) 21.0-40.0 0.0-6.0 6.0-10.0 10.0-18.0 18.0-21.0 e (kg/em2 The groundwater table is at a depth of 12 ft; the unit weight of the soil is 124 Ib/t above the groundwater table and 130 lb/ft below. Using Schmertmann's method (not the...
Problem 3: 40 points) A square foundation was decided to be constructed to support the load of a column in a residential building construction project located in Claremont, CA. During the site investigation, only sandy soil (c'= 0) was encountered. The ground water was observed at the depth 1.2m from ground level. Obtained samples were tested in the lab and the internal friction angle of the soil was found to be equal to 30°. The unit weight of the soil...
Q1 (10 marks) You have been asked to examine the bearing capacity of several different rectangular pad footings. The width of each of the footings is to remain constant wil vary. In order to reduce the number of calculations, you have decided to plot the ultimate bearing capacity against the length of the footing. The properties of the underlying soil profile are given in Table 1.1. The base of the footing is to be located 1 m below ground level...
Question 2 [Marks: 15 +10=25] 200kPa of construction stress was applied on top of the soil layers as shown in the figure below. (1) Calculate the settlement in the clay layer due to the construction (minimum of 2 sub layers is to be used). (W) If the soil went through 90% average degree of consolidation in 1 year, calculate the coefficient of consolidation (C.). 个 Sand Y = 20kN/m 4m Water table Clay (over consolidated) y = 16kN/m 100 4m...