3) A concrete electricity transmission pole is bearing at the ground surface, and exerts aload of 200 kN at the tip. The pole base diameter is given as 1.5 m. The groundwater atthis site is located at a depth of 3 m below the ground surface. The soils are uniform to adepth of 30 m, with a dry unit weight of 15 kN/m³, and a moisture content (w) of 10 percentabove the water table and 20 percent below. The relationship between dry and moist (ortotal) unit weight is given as follows:Ytotal = Ydry · (1 + w)Divide the upper 30 m into ten equal layers, and calculate the following assuming the poleload can be modeled as a point load:b) Horizontal effective overburden stress is defined as follows:On ess = K· Gy effAssume that K = 0.5, and calculate the horizontal effective overburden stresses andhorizontal total overburden stresses.

depth of soil Overburden stress(Kn/m^2) Pressure due to soil(KN/m^2) Pore water pressure (KN/m^2)…

Answered: b) Horizontal effective overburden…

Engineering

Civil Engineering

b) Horizontal effective overburden stress is defined as follows:

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

3) A concrete electricity transmission pole is bearing at the ground surface, and exerts a
load of 200 kN at the tip. The pole base diameter is given as 1.5 m. The groundwater at
this site is located at a depth of 3 m below the ground surface. The soils are uniform to a
depth of 30 m, with a dry unit weight of 15 kN/m³, and a moisture content (w) of 10 percent
above the water table and 20 percent below. The relationship between dry and moist (or
total) unit weight is given as follows:
Ytotal = Ydry · (1 + w)
Divide the upper 30 m into ten equal layers, and calculate the following assuming the pole
load can be modeled as a point load:
b) Horizontal effective overburden stress is defined as follows:
On ess = K· Gy eff
Assume that K = 0.5, and calculate the horizontal effective overburden stresses and
horizontal total overburden stresses.

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