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RCC Structures Design

RCC Structures Design
For initial estimate for a beam design, the width is assumed

1/30th of span
1/20th of span
1/15th of span
1/25th of span

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RCC Structures Design
The width of the flange of a T-beam should be less than

Distance between the centers of T-beam
Least of the above
One-third of the effective span of the T-beam
Breadth of the rib plus twelve times the thickness of the slab

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RCC Structures Design
A pre-stressed rectangular beam which carries two concentrated loads W at L/3 from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is

WL/P
WL/2P
WL/4P
WL/3P

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RCC Structures Design
If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is

All listed here
Kx (1 - x/l) + bw
K/x (1 + x/d) + bw
Kx (1 + x/l) + bw

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

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

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

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