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RCC Structures Design

RCC Structures Design
If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is

55
45
40
50

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RCC Structures Design
If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is:

(1 - C) mf - eE
(C - 1) mf - eE
(C - 1) mf + eE
(1 - C) mf + eE

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RCC Structures Design
Total pressure on the vertical face of a retaining wall of height ‘h’ per unit run exerted by the retained earth weighing ‘w’ per unit volume, is

wh [(1 - sin φ)/(1 + sin φ)]
wh² [(1 - sin φ)/3(1 + sin φ)]
wh² [(1 - sin φ)/2(1 + sin φ)]
wh² [(1 - sin φ)/(1 + sin φ)]

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RCC Structures Design
The steel generally used in R.C.C. work, is

Stainless
Mild steel
High carbon steel
High tension steel

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RCC Structures Design
If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm², the share stirrups are provided for a distance ‘x’ from either end where, ‘x’ is

150 cm
50 cm
100 cm
200 cm

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RCC Structures Design
For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed

20
15
10
25

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