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Fundamentals Of Construction Estimating
4th Edition
ISBN: 9781337399395
Author: Pratt, David J.
Publisher: Cengage,
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Chapter 1, Problem 8RQ
To determine
The cost per square foot (square meter).
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For the beam of cross section shown below, analyze the stresses at Mid-span at
transfer and at service stages, Neglect losses. Use: f' =41.4 MPa and assume that
concrete has attained strength of fci =34.5 MPa at the time of transfer. The initial
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Determine the equivalent transformed section in compute A and I
h=508
mm
d=381
9.15
As= 1290 mm²
305
For the prestressed concrete beam with a straight tendon shown in Fig below
which is under the prestressing force of 1620 kN, Analyze the stresses at Mid-span at
transfer stage. The uniformly distribution load (self weight) = 4.75 kN/m. Then draw
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W=4.75 kN/m
Δ
7.3 m
F= 1620 kN
750 mm
I 230 mm
500 mm
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