A W6x12 beam is strengthened with a % x ¾ inch bar welded to its top of the top flange on centerline. Sketch the cross section of the "built-up" beam and label the Neutral Axis with dimensions. What is the percentage of change in the Ix-x by adding the % x % bar?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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could you help me wwith these two questions please

A W6x12 beam is strengthened with a % x % inch bar welded to its top of the top
flange on centerline. Sketch the cross section of the "built-up" beam and label
the Neutral Axis with dimensions. What is the percentage of change in the Ixx by
adding the % x ¾ bar?
Transcribed Image Text:A W6x12 beam is strengthened with a % x % inch bar welded to its top of the top flange on centerline. Sketch the cross section of the "built-up" beam and label the Neutral Axis with dimensions. What is the percentage of change in the Ixx by adding the % x ¾ bar?
A W8 x 13 steel wide-flange beam on a 20-ft span is sup-
ported and loaded as shown. The uniformly distributed load
includes the weight of the beam. Calculate the maximum bending
stress.
3000 lb
1000 lb
8' - 0"
w = 110 lb/ft
B
16' -0"
4'-0"
RA
RB
Transcribed Image Text:A W8 x 13 steel wide-flange beam on a 20-ft span is sup- ported and loaded as shown. The uniformly distributed load includes the weight of the beam. Calculate the maximum bending stress. 3000 lb 1000 lb 8' - 0" w = 110 lb/ft B 16' -0" 4'-0" RA RB
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