Example 5.7Consider a rectangular foundation 2 mx 4 m in plan at a depth of 1.2 m in a sand deposit,as shown in Figure 5.23a. Given: y = 17.5 kN/m³; ā = 145 kN/m², and the followingapproximated variation of qc with z:1.2 mq=145 kN/m²++++y=17.5 kN/m³z (m)9c (kN/m²)B=2m-0-0.52250L=4 m0.5-2.534302.5-5.02950Estimate the elastic settlement of the foundation using the strain influence factor method.

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Consider a rectangular foundation 2 m x 4 m in plan at a depth of 1.2 m in a sand deposit, as shown in Figure 5.23a. Given: y = 17.5 kN/m³; ā= 145 kN/m², and the following approximated variation of q, with z: q=145 kN/m² 1.2 m ++y=17.5 kN/m³ z (m) qc (kN/m²) -B=2m- 0-0.5 2250 L=4 m 0.5-2.5 3430 2.5-5.0 2950 Estimate the elastic settlement of the foundation using the strain influence factor method.

Consider a rectangular foundation 2 m x 4 m in plan at a depth of 1.2 m in a sand deposit, as shown in Figure 5.23a. Given: y = 17.5 kN/m³; ā= 145 kN/m², and the following approximated variation of q, with z: q=145 kN/m² 1.2 m ++y=17.5 kN/m³ z (m) qc (kN/m²) -B=2m- 0-0.5 2250 L=4 m 0.5-2.5 3430 2.5-5.0 2950 Estimate the elastic settlement of the foundation using the strain influence factor method.

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

Sediment transport

Sediment transport or Soil transport is the movement of solid particles, usually due to the combination of gravitational forces acting on the sediment, and the movement of the liquid at which the sediment enters. Soil erosion occurs in natural systems where the particles are sandstones (sand, rocks), mud, or clay; the liquid is air, water, or ice; and the gravitational force that works to move particles to the landing surface. Sediment transportation or soil migration due to the movement of liquids occurs in rivers, lakes, lakes, oceans, and other bodies of water as a result of currents and waves. Transportation is also caused by glaciers as they flow, and to places on earth under the influence of wind. Soil erosion due to gravity alone is possible in most sloping areas, including hills, scarves, cliffs, and the continental shelf — the continental boundary of the slope.

Question

Example 5.7
Consider a rectangular foundation 2 mx 4 m in plan at a depth of 1.2 m in a sand deposit,
as shown in Figure 5.23a. Given: y = 17.5 kN/m³; ā = 145 kN/m², and the following
approximated variation of qc with z:
1.2 m
q=145 kN/m²
++++y=17.5 kN/m³
z (m)
9c (kN/m²)
B=2m-
0-0.5
2250
L=4 m
0.5-2.5
3430
2.5-5.0
2950
Estimate the elastic settlement of the foundation using the strain influence factor method.

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