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RCC Structures Design

RCC Structures Design
If the length of an intermediate span of a continuous slab is 5 m, the length of the end span is kept

4.5 m
4.0 m
4.1 m
4.7 m

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RCC Structures Design
If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is

100 cm
300 cm
150 cm
200 cm

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RCC Structures Design
A part of the slab may be considered as the flange of the T-beam if

All of the listed here
It is effectively bonded together with the beam
It is built integrally with the beam
Flange has adequate reinforcement transverse to beam

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

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RCC Structures Design
An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

45°
35°
25°
55°

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