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RCC Structures Design

RCC Structures Design
The maximum diameter of a bar used in a ribbed slab, is

12 mm
22 mm
6 mm
20 mm

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RCC Structures Design
If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

WL/12 (L - D/3)²
WL/12 (L - 2D/3)²
WL/10 (L + 2D/3)²
WL/10 (L - 2D/3)²

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

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

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RCC Structures Design
The system in which high tensile alloy steel bars (silica manganese steel) are used as pre-stressing tendons, is known as

Magnel-Blaton system
Lee-McCall system
C.L. standard system
Freyssinet system

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RCC Structures Design
A pile of length ‘L’ carrying a uniformly distributed load ‘W’ per metre length is suspended at two points, the maximum, B.M. at the centre of the pile or at the points of suspension, is

WL²/24
WL²/16
WL²/47
WL/8

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RCC Structures Design
If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

(π/4). (ft .d/fb)
π ft .d²/fb
ft .d/4fb
(π/4). (ft .d3/fb)

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