Economical depth of a plate girder corresponds to
| Economical depth of a plate girder corresponds to
A. minimum weight
B. minimum depth
C. maximum weight
D. minimum thickness of web
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Right Answer is: A
SOLUTION
The depth of the plate girder for which area of steel used is minimum will have minimum weight is the optimum depth. It is desirable to know the optimum depth for economy so that even if it cannot be adopted it will serve as a guide to be considered with other requirements. Normally, a depth less than depth giving minimum weight is adopted.