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RCC Structures Design

RCC Structures Design
The design of a retaining wall assumes that the retained earth

Is dry
Is free from moisture
All listed here
Is not cohesive

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RCC Structures Design
The weight of a foundation is assumed as

10% of wall weight
7% of wall weight
5% of wall weight
12% of wall weight

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RCC Structures Design
To ensure uniform pressure distribution, the thickness of the foundation, is

Kept uniform throughout
Decreased gradually towards the edge
Increased gradually towards the edge
Kept zero at the edge

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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 ‘p’ is the net upward pressure on a square footing of side ‘b’ for a square column of side ‘a’, the maximum bending moment is given by

M = pb (b - a)²/8
M = pb (b + a)/8
M = pb (b + a)/8
M = pb (c - a)/4
M = pb (b - a)²/4

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RCC Structures Design
In a pre-stressed beam carrying an external load W with a bent tendon is having angle of inclination ? and pre-stressed load P. The net downward load at the centre is

W - P sin θ
W - 2P cos θ
W - P cos θ
W - 2P sin θ

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