Construction Management, 5th Edition
5th Edition
ISBN: 9781119425731
Author: Daniel W. Halpin
Publisher: WILEY
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Chapter 2, Problem 14RQE
To determine
List the percentage of the total cost of a building as per the RS Means Building Construction Costs TM estimation for its
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Determine the section modulus of a rectangle 6" wide and 9" tall. Show your work.
6"
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3.140 A gate with a circular cross section is held closed by a lever 1-m long attached to a buoyant cylinder. The cylinder is 25 cm in diameter and weighs 200 N. The gate is attached to a horizontal shaft so it can pivot about its center. The liquid is water. The
chain and lever attached to the gate have negligible weight. Find the length of the chain such that the gate is just on the verge of opening when the water depth above the gate hinge is 10 m.
0.25 m
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Problem 3.140
Which one of these beams would you expect to better perform under bending along the
x-axis? Can you explain why?
A = 14.1 in
lxx
184 in
2
4
A = 8.8 in
lxx 41.10 in
4
Y
A = 28 in
lyy = 1024 in 4
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