and bottom flanges and is fastened by two rows of 20 mm rivets span of 6m and carries a uniformly distributed load of 270 kN/1 capacity of each rivet is 30 kN. a. Determine the distance from the centroid of the cover pla section. b. Determine the moment of inertia of the built-up section abou c. Determine the longitudinal pitch of the rivets.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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4. A cover-plate beam is made up of a W21x147 section with 300 mm x 12 mm plates attached to the top
and bottom flanges and is fastened by two rows of 20 mm rivets. The beam is simply supported over a
span of 6m and carries a uniformly distributed load of 270 kN/m including its own weight. The shear
capacity of each rivet is 30 kN.
a. Determine the distance from the centroid of the cover plate to the neutral axis of the built-up
section.
b. Determine the moment of inertia of the built-up section about its neutral axis.
c. Determine the longitudinal pitch of the rivets.
Properties of W21x147
Overall depth, d= 560 mm
Moment of Inertia, I = 0.00151 mm4
flange
d.
web
W21x147
Transcribed Image Text:4. A cover-plate beam is made up of a W21x147 section with 300 mm x 12 mm plates attached to the top and bottom flanges and is fastened by two rows of 20 mm rivets. The beam is simply supported over a span of 6m and carries a uniformly distributed load of 270 kN/m including its own weight. The shear capacity of each rivet is 30 kN. a. Determine the distance from the centroid of the cover plate to the neutral axis of the built-up section. b. Determine the moment of inertia of the built-up section about its neutral axis. c. Determine the longitudinal pitch of the rivets. Properties of W21x147 Overall depth, d= 560 mm Moment of Inertia, I = 0.00151 mm4 flange d. web W21x147
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