= 1.5 m in a soil with [5] The base of a square footing with 2 m wide rests at a depth Df parameters y = 19 kN/m³, ysat = 20 kN/m³, c = 20 kPa, = 30°. Using the unit weight of water 9.8 kN/m³, determine the ultimate bearing capacity of the soil under the following conditions. Y'w = 1) The water table is located deep enough and does not affect the bearing capacity of the soil. 2) The water table rises up to 1 m below the ground surface 3) The water table stays at the base of the foundation Note that the ultimate bearing capacity of square foundation can be basically estimated by Eq. (4), using the bearing capacity factors given below, where is in radians: Square foundation: qu = 1.3cN+yDN₁ +0.4yBN, 3π EXP [(2 4-6) 414] exp tan 1-sin N = (N-1) cot N₁ = (N₁ -1) tan (1.46) where Na Eq. (4)

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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[5] The base of a square footing with 2 m wide rests at a depth D = 1.5 m in a soil with
parameters y = 19 kN/m³, sat = 20 kN/m³, c = 20 kPa, d = 30°. Using the unit weight of water
yw = 9.8 kN/m³, determine the ultimate bearing capacity of the soil under the following
conditions.
1) The water table is located deep enough and does not affect the bearing capacity of the soil.
2) The water table rises up to 1 m below the ground surface
3) The water table stays at the base of the foundation
Note that the ultimate bearing capacity of square foundation can be basically estimated by Eq.
(4), using the bearing capacity factors given below, where is in radians:
Square foundation:
qu = 1.3cN+yDfN₁ +0.4yBN,
where N
9
[C
exp
3π
2
1-sino
tanp
N = (N₁ - 1) cot
N₁ = (N₁ -1) tan (1.4)
Eq. (4)
Transcribed Image Text:[5] The base of a square footing with 2 m wide rests at a depth D = 1.5 m in a soil with parameters y = 19 kN/m³, sat = 20 kN/m³, c = 20 kPa, d = 30°. Using the unit weight of water yw = 9.8 kN/m³, determine the ultimate bearing capacity of the soil under the following conditions. 1) The water table is located deep enough and does not affect the bearing capacity of the soil. 2) The water table rises up to 1 m below the ground surface 3) The water table stays at the base of the foundation Note that the ultimate bearing capacity of square foundation can be basically estimated by Eq. (4), using the bearing capacity factors given below, where is in radians: Square foundation: qu = 1.3cN+yDfN₁ +0.4yBN, where N 9 [C exp 3π 2 1-sino tanp N = (N₁ - 1) cot N₁ = (N₁ -1) tan (1.4) Eq. (4)
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