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The UKB 610 x 305 x 179 in S275 section is strengthened by welding a 310mmx20 mm plate of S355 to each flange. Determine I, Wpl and Wa about y and z-axis of the resulting section. Calculate the percentage increase in the plastic moment resistance about the y-axis of the section, achieved by welding the plates. Full lateral restraint may be assumed. Considering the beam is simply supported, also comment on serviceability improvement achieved.

The UKB 610 x 305 x 179 in S275 section is strengthened by welding a 310mmx20 mm plate of S355 to each flange. Determine I, Wpl and Wa about y and z-axis of the resulting section. Calculate the percentage increase in the plastic moment resistance about the y-axis of the section, achieved by welding the plates. Full lateral restraint may be assumed. Considering the beam is simply supported, also comment on serviceability improvement achieved.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The UKB 610 x 305 x 179 in S275 section is strengthened by welding a 310mmx20 mm plate of S355 to each flange. Determine I, Wpl and Wel about y and z-axis of the resulting section. Calculate the percentage increase in the plastic moment resistance about the y-axis of the section, achieved by welding the plates. Full lateral restraint may be assumed Considering the beam is simply supported, also comment on serviceability improvement achieved.
Transcribed Image Text:The UKB 610 x 305 x 179 in S275 section is strengthened by welding a 310mmx20 mm plate of S355 to each flange. Determine I, Wpl and Wel about y and z-axis of the resulting section. Calculate the percentage increase in the plastic moment resistance about the y-axis of the section, achieved by welding the plates. Full lateral restraint may be assumed Considering the beam is simply supported, also comment on serviceability improvement achieved.
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