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37.

The overlap of batten plates with the main members in welded connections should be more than
Where t = thickness of the batten plate                        
A. 3t B. 4t
C. 6t D. 8t



38.

The slenderness ratio of lacing bars should not exceed                        
A. 100 B. 120
C. 145 D. 180



39.

Economical depth of a plate girder corresponds to                        
A. minimum weight B. minimum depth
C. maximum weight D. minimum thickness of web




40.

Shear buckling of web in a plate girder is prevented by using                        
A. vertical intermediate stiffener B. horizontal stiffener at neutral axis
C. bearing stiffener D. none of the above



41.

Horizontal stiffener in a plate girder is provided to safeguard against                        
A. shear buckling of web plate B. compression buckling of web plate
C. yielding D. all of the above



42.

Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is                        
A. 5 mm B. 6 mm
C. 8 mm D. 10mm



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