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RCC Structures Design

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

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

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RCC Structures Design
If the bearing capacity of soil is 10 tonnes/cm² and the projection of plain concrete footing from walls, is a cm, the depth D of footing is

D = 0.775 √a
D = 0.0775 a
D = 0.775 a²
D = 0.775 a

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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
Remains unchanged
Is decreased by Pe/Z

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RCC Structures Design
Piles are usually driven by

Drop hammer
All listed here
Diesel operated hammer
Single acting steam hammer

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RCC Structures Design
The thickness of base slab of a retaining wall generally provided, is

One half of the width of the stem at the bottom
One fourth of the width of the steam at the bottom
One-third of the width of the stem at the bottom
Width of the stem at the bottom

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RCC Structures Design
For M 150 grade concrete (1 : 2 : 4) the moment of resistance factor is

5.8
8.5
7.5
0.87

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