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RCC Structures Design

RCC Structures Design
The live load to be considered for an accessible roof, is

75 kg/m³
Nil
200 kg/cm²
150 kg/m²

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RCC Structures Design
To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is

0.307 L
0.107 L
0.407 L
0.207 L

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RCC Structures Design
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is

25 cm
20 cm
30 cm
35 cm

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

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RCC Structures Design
An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encased with the floor of a hall 12 meters by 7 meters, is spaced at 3 meters from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is

300 cm
236 cm
176 cm
233 cm

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

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