A W-shape member will be used in a cantilever to support a distributed loa shown in the figure below. The load is a superposition of dead load, WD = 2 kips/ft (including self-weight), and live load, wi = 3 kips/ft. The member is laterally braced at the fixed support and at the end. By the LRFD provision AISC, what is the lightest W18 that can support the specified load? Does th section satisfy a deflection limit of L/150 for service loads? WD= 2 k/ft WL = 3 k/ft

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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1. A W-shape member will be used in a cantilever to support a distributed load as
shown in the figure below. The load is a superposition of dead load, wp=
kips/ft (including self-weight), and live load, wi = 3 kips/ft. The member is
laterally braced at the fixed support and at the end. By the LRFD provisions of
AISC, what is the lightest W18 that can support the specified load? Does this
section satisfy a deflection limit of L/150 for service loads?
= 2
WD= 2 k/ft
WL = 3 k/ft
20'
2. Select the lightest W-section to support a uniform dead load of 2k/ft (Self-weight
included) and a concentrated live load of 13k at midspan of a 30' simple span.
The beam has lateral support of the compression flange at the ends and at the
concentrated load. The maximum service live load deflection may not exceed
L/1000.
Transcribed Image Text:1. A W-shape member will be used in a cantilever to support a distributed load as shown in the figure below. The load is a superposition of dead load, wp= kips/ft (including self-weight), and live load, wi = 3 kips/ft. The member is laterally braced at the fixed support and at the end. By the LRFD provisions of AISC, what is the lightest W18 that can support the specified load? Does this section satisfy a deflection limit of L/150 for service loads? = 2 WD= 2 k/ft WL = 3 k/ft 20' 2. Select the lightest W-section to support a uniform dead load of 2k/ft (Self-weight included) and a concentrated live load of 13k at midspan of a 30' simple span. The beam has lateral support of the compression flange at the ends and at the concentrated load. The maximum service live load deflection may not exceed L/1000.
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