QA 5m deep deposit of silty sand lies abovea 4m deep deposit ofTheUneler-gravel.gravel islain by a deep layer of stiff clay. The ground watertable is found 2m.below the groundsur lace. TheSoil Properties are:-ofBal Sand below GWT = 1.75 Mg 1 m³PatIsat of gravel = 2.05 Mg/m³sat of sand above G.WT = 1.7 Mg/m³Draw The distribution of vertical total stress,Pore water pressure, and vertical effective stress withdepth down to the clay layer.0 = 8xh8 = 1.7 Mg/m³SatStBut = 1.95 Mg/m³= 2.05 Mg/m³D GWTsilty sandG.LgravelclayH5⁰m

We know, 1 mg/m3 = 9.81 kn/m3 , Calculation of effective stress ;

QA 5m deep deposit of silty sand lies above a 4m deep deposit of The undler- gravel. gravel is lain by a deep layer of stiff clay. The ground water table is found 2m. below the ground Sur lace. The Soil Properties are :- Le sand below GWT = 1.75 Mg 1 m³ Isat of gravel = 2.05 Mg/m³ Isal of sand above G.WT = 1.7 Mg/m³ Draw The distribution of vertical total stress, Pore water pressure, and vertical effective stress with depth down to the clay layer. 0 = 8xh G.L

QA 5m deep deposit of silty sand lies above a 4m deep deposit of The undler- gravel. gravel is lain by a deep layer of stiff clay. The ground water table is found 2m. below the ground Sur lace. The Soil Properties are :- Le sand below GWT = 1.75 Mg 1 m³ Isat of gravel = 2.05 Mg/m³ Isal of sand above G.WT = 1.7 Mg/m³ Draw The distribution of vertical total stress, Pore water pressure, and vertical effective stress with depth down to the clay layer. 0 = 8xh G.L

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

Calculation of Settlement

The vertical displacement of the structural foundation due to the loading from the superstructure is known as settlement. It is due to the reduction of air voids present in the soil. The amount of vertical displacement depends on the bearing capacity of the soil on which the foundation is laid. The effect of the settlement depends on the magnitude of settlement, uniformity, and the structural design of the structure. The maximum allowable settlement for residential and office buildings should be less than 18 mm, for industrial buildings, it is 38 mm and for commercial buildings, it is 25 mm.

Question

QA 5m deep deposit of silty sand lies above
a 4m deep deposit of
The
Uneler-
gravel.
gravel is
lain by a deep layer of stiff clay. The ground water
table is found 2m.
below the ground
sur lace. The
Soil Properties are:-
of
Bal Sand below GWT = 1.75 Mg 1 m³
Pat
Isat of gravel = 2.05 Mg/m³
sat of sand above G.WT = 1.7 Mg/m³
Draw The distribution of vertical total stress,
Pore water pressure, and vertical effective stress with
depth down to the clay layer.
0 = 8xh
8 = 1.7 Mg/m³
Sat
St
But = 1.95 Mg/m³
= 2.05 Mg/m³
D GWT
silty sand
G.L
gravel
clay
H
5⁰m

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