Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 17, Problem 17.8P
a.
To determine
Find the factor of safety against overturning.
b.
To determine
Find the factor of safety against sliding.
c.
To determine
Find the factor of safety against bearing capacity failure.
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(20
02 A concrete beam of rectangular cross-section (300 x 400) mm is Prestressed with
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a stress of (900 N/mm²). Compute the percentage loss of stress in steel after transfer due
to elastic deformation of concrete.
Given: Es=200 x 103 N/mm², Ec = 25 x 10³ N/mm².
300
за
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400
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546
2046
Reinforced Concrete Design
First Monthly Exam
24/02/2
Q1. A simply supported rectangular beam (300 x 400) mm and span (12) m with live load of
from the soffit of the beam. Compute the stresses at mid-span of beam for the following
(5 kN/m). At the centre of the beam the prestressing force of (120) kN is located at (50 mm)
conditions:
(a) Prestress + self- weight of beam (initial stage).
(b) Prestress + self- weight of beam + Live Load (service stage).
3:00
400
120
K
*
12m
5kN/m.
120 KN
A driven pipe pile in clay is shown in Figure (1). The pipe has outside diameter of 406 mm, and
wall thickness is 6.35 mm.
a. calculate the net point bearing capacity.
b. calculate the skin resistance (1) by using a method, (2) by using A method.
e. Estimate the net allowable pile capacity. Use FS-4.
Figure (1)
5 m
Saturated clay
30 kN/m²
Groundwater
table
y= 18 kN/m
5 m
Clay
C-30 kN/m2
y= 18 kN/m
20 m
C
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-100 kN/m²
19.6 kN/m
Chapter 17 Solutions
Principles of Foundation Engineering (MindTap Course List)
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