Which one of the following section performs better on the ductility criterion ?
Anonymous Quiz
11%
Balanced section
11%
Over Reinforced
73%
Under Reinforced
4%
Non prismatic
Consider the following cases in the design of reinforced concrete members in flexure
1. Over reinforced section
2. Tension Failure 3. Compression failure 4. Under reinforced section Which of above cases considered for safe design of members in flexure?
1. Over reinforced section
2. Tension Failure 3. Compression failure 4. Under reinforced section Which of above cases considered for safe design of members in flexure?
Anonymous Quiz
7%
1 and 2 only
63%
2 and 4 only
19%
3 and 4 only
11%
1 and 3 only
If the characteristic strength of concrete fck is defined as the strength below which not more than 50% of the test results are expected to fall, the expression of fck in the terms of mean strength fm and SD is
Anonymous Quiz
6%
Fm - 0.1945 SD
29%
Fm - 1.645 SD
32%
Fm
33%
Fm + 1.645 SD
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Double Reinforced beams are recommended when
Anonymous Quiz
15%
The depth of the beam is terrified
15%
The breadth of the beam is restricted
64%
Both depth and breadth are restricted
7%
The shear is high
Two rectangular under reinforced concrete beam sections X and Y are similar in all aspects expect that the longitudinal compression reinforcement in the section Y is 10% more. Which one of the following is the correct statement
Anonymous Quiz
40%
Section X has less flexural strength and is less ductile than section Y
32%
Section X has less flexural strength and is more ductile than section Y
19%
Section X and Y have equal flexural strength but different ductility
9%
Section X and Y have equal flexural strength and ductility
As compared to the working stress method of design, the limit state method of design premises that the concrete can admit
Anonymous Quiz
13%
A lower stress level
73%
A higher stress level
8%
Occasionally higher but usually lower
6%
The same stress level
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Q11. A RCC work requires 101m3 of concrete. The minimum number of specimens to be prepared as per compressive strength acceptance criteria are
Anonymous Quiz
22%
5
53%
6
9%
12
16%
18
#12 The minimum strain at failure in tension steel having yield stress 250MPA and modulus of elasticity 200GPA as per limit state method of design are
Anonymous Quiz
46%
0.0031
31%
0.0036
13%
0.0044
10%
0.0053
#13 The effective width of a isolated T beam( continues) of which clear span 8m , depth of flange 150mm, width of web 500mm ane flange 1600mm.
Anonymous Quiz
22%
1170mm
33%
1368mm
17%
1300mm
28%
1600mm
#14 The ratio of short term and long term modular ratios for M30 grade concrete would be approximately.
Anonymous Quiz
51%
0.782
15%
0.815
24%
1.279
10%
1.227
#15 The depth of critical neutral axis or balance depth of neutral axis in working stress method depends upon
1. Permissible compressive stress due to bending
2. Modular ratio 3. Longitudinal stress in steel
1. Permissible compressive stress due to bending
2. Modular ratio 3. Longitudinal stress in steel
Anonymous Quiz
7%
1 only
9%
3 only
21%
2 and 3
63%
1 , 2, 3
#16 By over Reinforcement beam , the moment of resistance can be increased not more than
Anonymous Quiz
13%
10%
14%
15%
16%
20%
56%
25%
#17 A T beam becomes identical to a rectangular beam with width equal to its flange width when the neutral axis is
Anonymous Quiz
22%
Through the geometrical centre of the beam
18%
At the junction of the rib and the flange
4%
Below the slab
56%
Within the slab
#18 Ultimate load method of designing a RCC structure wrt Elastic theory method is
Anonymous Quiz
53%
More economical
37%
Less economical
5%
Equal to cost
5%
Not comparable in costing
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