Using both LRFD and ASD, select the most economical sections, with F, = 50 ksi, unless otherwise specified, and assuming full lateral bracing for the compression flanges. Working or service loads are given for each case, and beam weights are not included.

Using both LRFD and ASD, select the most economical sections, with F, = 50 ksi, unless otherwise specified, and assuming full lateral bracing for the compression flanges. Working or service loads are given for each case, and beam weights are not included.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter5: Beams

Section: Chapter Questions

Problem 5.14.3P

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Question

-8. Using both LRFD and ASD, select the most economical sections, with F, = 50 ksi,
unless otherwise specified, and assuming full lateral bracing for the compression
flanges. Working or service loads are given for each case, and beam weights are not
included.
-1.
FIGURE P9-1
28 ft
D = 1.50 k/ft
L=3.25 k/ft
H
(Ans. W24 x 76 LRFD and ASD)

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Step 1: Mention the given data.

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Step 2: Determine the maximum moment using LRFD.

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Step 3: Determine the required section modulus.

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Step 4: Determine the maximum moment including self weight.

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Step 5: Determine the maximum moment using ASD.

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Step 6: Check

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