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Principles of Foundation Engineering (MindTap Course List)

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter14: Sheet-pile Walls

Section: Chapter Questions

Problem 14.5P

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Question

3–21. The tower crane is used to hoist a 2-Mg load upward
at constant velocity. The 1.5-Mg jib BD and 0.5-Mg jib BC
have centers of mass at Gj and G2, respectively. Determine
the required mass of the counterweight C so that the
resultant moment produced by the load and the weight of
the tower crane jibs about point A is zero. The center of mass
for the counterweight is located at G3.
4 m
9.5 m
G2
-12.5 m-
GF75 m
23 m

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