This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 05Ch05.qxd 9/25/08 480 2:29 PM Page 480 CHAPTER 5 Stresses in Beams (Basic Topics) Allowable Tensile Force
A T cos (a)
A M d2
I2 T sin (a) L T cos (a) a
I sallow Tallow 1.5 d2
2 cos (a)
Tallow sin (a) L + cos (a) a 108.6 kN I 1.5 d2
2 ; Problem 5.12-7 Because of foundation settlement,
a circular tower is leaning at an angle a to the vertical
(see figure). The structural core of the tower is a circular
cylinder of height h, outer diameter d2, and inner diameter d1.
For simplicity in the analysis, assume that the weight
of the tower is uniformly distributed along the height.
Obtain a formula for the maximum permissible angle
a if there is to be no tensile stress in the tower. h d1
a Solution 5.12-7 Leaning tower
64 2 d4)
64 2 d2)(d2 + d2)
1 weight of tower
angle of tilt
A d2 + d2
16 c d2)
2 AT THE BASE OF THE TOWER
N W cos a M h
W a b sin a
View Full Document
This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.
- Fall '11