1) Calculate the design shear strength of the section. Check if the section is adequate in shear. USE LRFD and U = 1.2D + 1.6L. 2) Is the maximum deflection at the midspan of the beam due to live load adequate? 3) Calculate the maximum uniform live load that can be carried by the beam.
1) Calculate the design shear strength of the section. Check if the section is adequate in shear. USE LRFD and U = 1.2D + 1.6L. 2) Is the maximum deflection at the midspan of the beam due to live load adequate? 3) Calculate the maximum uniform live load that can be carried by the beam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A W420x85 steel beam is fully restrained with a
uniformly distributed live load of 25 kN/m. The
beam has a span of 10m. Use A36 steel.
Properties of W40 x 85
A = 10839 mm2
%D
bf = 180 mm
tf = 18 mm
%3D
tw =
= 11 mm
Ix = 310 x 106 mm4
%3D
d = 420 mm
(Note: Since this is a built-up section, for
checking of web slenderness, use h = d - 2t;)
%3D
1) Calculate the design shear strength of the
section. Check if the section is adequate in
shear. USE LRFD and U = 1.2D + 1.6L.
%3D
2) Is the maximum deflection at the midspan of
the beam due to live load adequate?
3) Calculate the maximum uniform live load that
can be carried by the beam.
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