A steel beam is made up of a wide flange section whose total depth is 600mm, width of the flange is 300mm, flange thickness of 20mm and moment of inertia lx = 1.16x109mm4. Its web thickness is 10mm and has a simple span of 9m. A 40KN/m uniform load is loaded throughout its span and 200kN load acting at mid span Allowable bending stress of the beam is 148Mpa I 3m 4m Mmax = 5m Fb = 0.6Fy Fb = M Sx WL² 8 Sx = ! C Determine the length of top and bottom reinforcing plates if necessary Select the correct response: + PL 4 c = depth from top the section to midheight

A steel beam is made up of a wide flange section whose total depth is 600mm, width of the flange is 300mm, flange thickness of 20mm and moment of inertia lx = 1.16x109mm4. Its web thickness is 10mm and has a simple span of 9m. A 40KN/m uniform load is loaded throughout its span and 200kN load acting at mid span Allowable bending stress of the beam is 148Mpa I 3m 4m Mmax = 5m Fb = 0.6Fy Fb = M Sx WL² 8 Sx = ! C Determine the length of top and bottom reinforcing plates if necessary Select the correct response: + PL 4 c = depth from top the section to midheight

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 steel beam is made up of a wide flange section whose total depth is 600mm, width of the flange is 300mm, flange thickness of 20mm and moment of inertia lx =
1.16x109mm4. Its web thickness is 10mm and has a simple span of 9m. A 40KN/m uniform load is loaded throughout its span and 200KN load acting at mid span.
Allowable bending stress of the beam is 148Mpa
I
3m
4m
WL²
Mmax = +
8
5m
Fb = 0.6Fy
Fb =
M
Sx
Determine the length of top and bottom reinforcing plates if necessary
Select the correct response:
Sx = ²
C
PL
4
c = depth from top of the section to midheight

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Step 1 Calculate Maximum bending Moment

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Step 2 Find Section modulus of Wide flange

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Step 3 Find required moment of inertia

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Step 4 Locate the point where moment can carry wide flange

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Step 5 Find Length of top and bottom reinforcing plates

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