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RCC Structures Design

RCC Structures Design
A raft foundation is provided if its area exceeds the plan area of the building by

40 %
20 %
10 %
50 %

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RCC Structures Design
After pre-stressing process is completed, a loss of stress is due to

Creep of concrete
Shrinkage of concrete
Elastic shortening of concrete
All of the listed here

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RCC Structures Design
If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is

2800/C
2800/C²
2300/2C
2800/3C

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RCC Structures Design
An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm φ placed symmetrically along the circumference. If it carries a load of 40,000 kg axially, the stress is

175 kg/cm²
250 kg/cm²
100 kg/cm²
49.9 kg/cm²

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RCC Structures Design
If jd is the lever arm and ΣO is the total perimeter of reinforcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

Q/2jdƩO
Q/3jdƩO
2 × Q/jdƩO
Q/jdƩO

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RCC Structures Design
The minimum number of main steel bars provided in R.C.C.

All listed here
Rectangular columns is 4
Octagonal columns is 8
Circular columns is 6

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