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Civil Engineering Objective Questions { R.C.C. Structure Design }



232.  If the partial safety factor on concrete is 1.5, the design force of compression in the reinforced concrete beam is where bx is the area of compression block:
A. 0.32 ack bx
B. 0.33 rick bx
C. 0.36 ack bx
D. 0.34 ack bx
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233.  The ratio of the distance of the line of action of force of compression from the extreme top fibre and the depth of the neutral axis from the extreme fibre is:
A.0.32
B.0.34
C.0.38
D.0.42
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234. The distance between the lines of action of compression and tensile forces in a singly reinforced beam is called:
A. effective depth
B. lever aim
C. neutral axis
D. none of these
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235. The maximum depth of neutral axis of singly reinforced beam is kept:
A. half the depth of the cross section
B. to ensure that tensile steel reaches its yield stress
C. to ensure that tensile steel reaches its working stress
D. at the centre of the tensile steel
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236.  If the ratio of steel to concrete in a beam is such that maximum strain in both materials reach simultaneously, the beam is referred to as
A. balanced reinforced beam
B. under reinforced beam
C. over reinforced beam
D. none of these
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237.  Compression failure of simply reinforced beam occurs in
A. balanced reinforced beam
B. under-reinforced beam
C. over reinforced beam
D. none of these
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238.  Tension failure occurs is singly reinforced beam in
A. balanced reinforced beam
B. under-reinforced beam
C. over reinforced beam
D. none of these
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