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RCC Structures Design

RCC Structures Design
The weight of reinforced concrete, is generally taken as

2400 kg/m³
2300 kg/m³
2500 kg/m³
2200 kg/m³

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RCC Structures Design
A circular slab subjected to external loading, deflects to form a

Paraboloid
None of these
Semi-hemisphere
Ellipsoid

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RCC Structures Design
If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge

Is increased by Pe/Z
Remains unchanged
Is decreased by Pe/Z
Is increased by PZ/e

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RCC Structures Design
If the modular ratio is ‘m’, steel ratio is ‘r’ and overall depth of a beam is ‘d’, the depth of the critical neutral axis of the beam, is

[(r - m)/m] d
[(m + r)/m] d
[m/(m - r)] d
[m/(m + r)] d

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RCC Structures Design
A ribbed slab is provided for

Acoustic insulation
A plain ceiling
All of these
Thermal insulation

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RCC Structures Design
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is

2WR²/16
WR²/16
3WR²/16
Zero

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