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43.

If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called                        
A. balanced beam B. under-reinforced beam
C. over-reinforced beam D. none of the above



44.

If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section                        
A. depends on as, only B. depends on aCbC only
C. depends on both crst and acbc D. is independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in concrete in bend¬ing compression.



45.

If the foundations of all the columns of a structure are designed on the total live and dead load basis, then                        
A. there will be no settlement of columns B. there will be no differential settlement
C. the settlement of exterior columns will be more than interior columns D. the settlement of interior columns will be more than exterior columns




46.

If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be                        
A. 0.35 d B. 0.40 d
C. 0.45 d D. dependent on grade of concrete also



47.

If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are                        
A. 3.0 m and 1.5 m B. 1.5 m and 3.0 m
C. 3.0 m and 3.0 m D. 1.5 m and 1.5 m



48.

If the storey height is equal to length of RCC wall, the percentage increase in strength is                        
A. 0 B. 10
C. 20 D. 30



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