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RCC Structures Design

RCC Structures Design
For a number of columns constructed in a rcjw, the type of foundation provided, is

Strip
Strap
Raft
Footing

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RCC Structures Design
‘P’ is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The minimum stress ‘f’ on the beam subjected to a maximum bending moment ‘M’ is

f = (P/A) - (M/Z)
f = (P/A) - (M/6Z)
f = (A/P) - (M/Z)
f = (P/'- (Z/M)

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RCC Structures Design
As per IS : 1343, total shrinkage for a pre-tensioned beam, is

3.0 × 10⁻²
3.0 × 10⁻⁵
3.5 × 10⁻⁵
3.0 × 10⁻³

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RCC Structures Design
If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is

All listed here
Kx (1 + x/l) + bw
K/x (1 + x/d) + bw
Kx (1 - x/l) + bw

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RCC Structures Design
If ‘H’ is the overall height of a retaining wall retaining a surcharge, the width of the base slab usually provided, is

0.4 H
0.5 H
0.3 H
0.7 H

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RCC Structures Design
If the permissible compressive and tensile stresses in a singly reinforced beam are 50 kg/cm² and 1400 kg/cm² respectively and the modular ratio is 18, the percentage area At of the steel required for an economic section, is

0.796 %
0.496 %
0.696 %
0.596 %

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