Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN: 9781337094740
Author: Segui, William T.
Publisher: Cengage Learning
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Question
Chapter 10, Problem 10.5.2P
To determine
(a)
The required distance to the next stiffener if a stiffener is placed at the end of the girder by using LRFD.
To determine
(b)
The required distance to the next stiffener if a stiffener is placed at the end of the girder by using ASD.
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moi
A plate girder is composed of the following elements:
Web plate: 900 mm depth x 10 mm thickness
Two angles : ISA 200 mmx100 mmx12.0 mm @ 27.2 kglm, in each flange
Two flange plates : 500 mm x 16 mm in each flange.
(1),
(ii)
(ii)
The girder is simply supported over an effective span of 12 m. The diameter of rivets used
for connecting flange angles to the web and flange plates to flange angles is 20 mm.
Determine the safe uniformly distributed load which the girder can carry, inclusive of its own
weight. Assume that the compression flange is not restrained against lateral bending, but the ends
are restrained against torsion. Take fy = 250 N/mm2.
a) Write and explain one advantage and onedisadvantage of using intermediate stiffeners in plate girders.
b) If a plate girder design was initially determined to require intermediate stiffeners, but one optedtonot use them, how else could the plate girder be designed to achieve the same shaer capacity.
c) A w-shepe beam is bent in bi-axial bending. All loading passes through its shear center. Please explain why the flexural strenght about its weak axis is the fullplastic moment capacity regardless of Lb
Where is/are the location(s) of the maximum
compressive flexural stress?
A simple I-beam is loaded as shown.
20 mm
P KN
PKN
P KN
B
20 mm-
B
с
D
L/4 m
L/4 m
L/4 m
Pin support at the NA
Midspan at point B
Mid span at point D
Midspan at the top fiber
Roller support at top fiber
Section D at the top fiber
Section C at +170 mm from the NA
L/4 m
20 mm
C
250 mm
150 mm
150 mm
D
A
Chapter 10 Solutions
Steel Design (Activate Learning with these NEW titles from Engineering!)
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