A W14 X 82 of 50 ksi steel is to be investigated for use as a beam-columnin an unbraced frame. The length is 14 feet. First-order analyses of theframe were performed for both the sway and the nonsway cases. Thefactored loads and moments corresponding to one of the load combina-tions to be investigated are given for this member in the following table:Type of analysisMtop (ft-kips)Mbot (ft-kips)Nonsway45Sway40P₁(kips)4002495Bending is about the strong axis, and all moments cause double-curvaturebending (all end moments are in the same direction, that is, all clockwiseor all counterclockwise). The following values are also available from theresults of a preliminary design:Pe story = 40,000 kips, Pstory = 6,000 kipsUse K = 1.0 (nonsway case), K = 1.7 (sway case), and K, = 1.0. Use LRFDand determine whether this member satisfies the provisions of the AISCSpecification for the given load combination.

Section- W14×82L= 14 ftPe story=40,000 kipsPstory=6000 kipsKx=1 (non sway)Kx=1.7 (sway)Ky=1

A W14 X 82 of 50 ksi steel is to be investigated for use as a beam-column in an unbraced frame. The length is 14 feet. First-order analyses of the frame were performed for both the sway and the nonsway cases. The factored loads and moments corresponding to one of the load combina- tions to be investigated are given for this member in the following table: Type of analysis Mtop (ft-kips) Mbot (ft-kips) Nonsway 45 Sway 40 Bending is about the strong axis, and all moments cause double-curvature P (kips) 400 24 95

A W14 X 82 of 50 ksi steel is to be investigated for use as a beam-column in an unbraced frame. The length is 14 feet. First-order analyses of the frame were performed for both the sway and the nonsway cases. The factored loads and moments corresponding to one of the load combina- tions to be investigated are given for this member in the following table: Type of analysis Mtop (ft-kips) Mbot (ft-kips) Nonsway 45 Sway 40 Bending is about the strong axis, and all moments cause double-curvature P (kips) 400 24 95

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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Concept explainers

Design criteria for structural loading

The different loads such as loads due to self-weight (dead load) and external loads such as live load, wind loads, seismic load, snow load, and other loads and load combinations that influence the design of a building are called structural loading. The nature of the applied load differs from changes in the location, design, and type of materials used. The design criteria require that structures must be designed and constructed to be able to withstand all load types that are expected to act upon the structure and render its usage for the designated purpose. The structural members such as beams, slabs, columns, and foundations help the structure to withstand the applied load. There are different institutes such as ASCE and ACI that provide building design codes to assure minimum safety requirements and quality of the structures.

Question

A W14 X 82 of 50 ksi steel is to be investigated for use as a beam-column
in an unbraced frame. The length is 14 feet. First-order analyses of the
frame were performed for both the sway and the nonsway cases. The
factored loads and moments corresponding to one of the load combina-
tions to be investigated are given for this member in the following table:
Type of analysis
Mtop (ft-kips)
Mbot (ft-kips)
Nonsway
45
Sway
40
P₁(kips)
400
24
95
Bending is about the strong axis, and all moments cause double-curvature
bending (all end moments are in the same direction, that is, all clockwise
or all counterclockwise). The following values are also available from the
results of a preliminary design:
Pe story = 40,000 kips, Pstory = 6,000 kips
Use K = 1.0 (nonsway case), K = 1.7 (sway case), and K, = 1.0. Use LRFD
and determine whether this member satisfies the provisions of the AISC
Specification for the given load combination.

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