Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or
instructional purposes only to students enrolled in courses for which the textbook has been adopted. Any other
reproduction or translation of this work beyond that permitted by Sections 107 or 108 of the 1976 United States
Copyright Act without the permission of the copyright owner is unlawful.
_______________________________________________________________________
PROBLEM (9.56) Figure P9.54 shows a steel C clamp. Determine the required dimension b
of the cross section.
Given: P = 20 kN, h = 60 mm, all
σ
= 140 MPa
SOLUTION
See the figure in solution of Prob. 9.54:
364
(0.06)
0.06 18 10
12
zb
AbI bm
−
===× mkNM ⋅=×= 1)104(25.0 3
Maximum stress occurs at A. Thus,
33
66
210 110(0.03)
140 10 0.06 18 10
all PMc
AI b b
σ
−
××
=×=+ = +×
or 150
140 30 30bb
=+, mmb 14.12
=
1
/
1
100%