Answered: The figures below show a formed…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

The figures below show a formed sheet-steel bracket. The total distributed load “W” on the
bracket is 20 kN. It is secured to the support with two grade 5.8 bolts. The joint constant is
C=0.183, and the bolts are preloaded to 70 percent of the proof load. The dimensions of
the top flange are the same as the mounting flange.
a) Find the external loads (P1 and P2) carried by upper and bottom bolts respectively if both
resist the moment?
b) Find the upper bolt diameter by ignoring direct shear load and determine/select a
standard metric bolt size with a pitch for a design factor of 1,4.
c) Is there any need to enlarge 5 mm dia. holes in the bracket?

5 mm R
Both structural support
12 mm y
and bracket are
1020 press cold-formed
steel.
20 mm-
200 mm
5-mm dia. holes
20 mm
1.5 mm
50 mm
Front view
Right side view

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