A column is supported on a footing as shown in the figure below. The water table is at a depth of 1 m below the base the base of the footing. Column Footing 1.5 mx 3.0m GL 1.0 m Sand Y = 18 kN/m² N₂-24 N, 20 The safe load (kN) that the footing can carry with a factor of safety 3 is

A column is supported on a footing as shown in the figure below. The water table is at a depth of 1 m below the base the base of the footing. Column Footing 1.5 mx 3.0m GL 1.0 m Sand Y = 18 kN/m² N₂-24 N, 20 The safe load (kN) that the footing can carry with a factor of safety 3 is

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

A column is supported on a footing as shown in the figure below. The water table is at a depth of 10
m below the base the base of the footing.
Column
Footing
1.5 mx 3.0 m
GL
1.0 m
Sand
Y = 18 kN/m²
N₂-24
N₁=20
The safe load (kN) that the footing can carry with a factor of safety 3 is

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A rectangular footing 2.0 m x 2.5 m carries three columns at distances from the footing center as shown below. The column loads are: P₁ = 400 kN and P₂ = P3= 200 kN. For the soil profile and properties given, check the safety factor against bearing capacity failure. (Use yw = 10 kN/m³) 0.4 m 0.2 m 2 N Depth be w surface in meters 4 C. 3 (a TENT 7 8 Note: pictures are not drawn to sale 00 0.8 m B 0.8 m 3 Water table ROCK Soil surface WIT Sand c = 0 kPa, = 30° = 16 kN/m³ Y Ysat = 20 kN/m³ Es = 12 MPa, v = 0.3 Clay c = 60 kPa, = 0° Y = 14 kN/m³ Ysat = 19 kN/m³ Cc = 0.3, Cs = 0.1 eo = 1.0 P= 245 kPa