A 25 mm thick steel plate will be used as an axial member to support a dead load of 280 kN and a live load of 410 kN. The yield strength of the steel is 250 MPa. (a) Use the ASD method to determine the minimum plate width b required for the axial member if a factor of safety of 1.67 with respect to yielding is required. (b) Use the LRFD method to determine the minimum plate width b required for the axial member on the basis of yielding of the gross section. Use a resistance factor  t = 0.9 and load factors of 1.2 and 1.6 for the dead and live loads, respectively.

Structural Analysis
6th Edition
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Chapter2: Loads On Structures
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A 25 mm thick steel plate will be used as an axial member to support a dead load of 280 kN and
a live load of 410 kN. The yield strength of the steel is 250 MPa.
(a) Use the ASD method to determine the minimum plate width b required for the axial member
if a factor of safety of 1.67 with respect to yielding is required.
(b) Use the LRFD method to determine the minimum plate width b required for the axial
member on the basis of yielding of the gross section. Use a resistance factor  t = 0.9 and load
factors of 1.2 and 1.6 for the dead and live loads, respectively.

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