Sustainable Energy, SI Edition
2nd Edition
ISBN: 9781337672092
Author: DUNLAP, Richard A.
Publisher: Cengage Learning
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Chapter 3, Problem 8P
To determine
Calculate the number of years the U.S. resources last at the current rate of use.
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For the I section prestressed concrete beam with a straight tendon shown in Fig
below which is under the prestressing force, and U.D.L. Analyze the stresses at Mid-
span at: A- transfer stage (due to initial prestress P. and self weight wo)
B- at service stage. (due to effective prestress Pe and full loads)
Check stresses with the ACI permissible stresses.
Given:
Initial prestress force Pi = 750 kN
Effective prestress force Pe = 640 kN
Wo (self) = 2.7 kN/m
=
W (D+L) 8 kN/m
e = 130 mm
I 5 10 mm²
fci = 25 MPa (at transfer age), f' = 35 MPa (at service age)
ASECTION 114 000 mm²
W=4.75 kN/m
|-
12 m
F
I
610mm
Kindly help to provide explanation, examples and provide any useful link for citations and learning purposes.
This is regarding building diagnosis.
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Sustainable Energy, SI Edition
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