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RCC Structures Design

RCC Structures Design
The steel generally used in R.C.C. work, is

Mild steel
High tension steel
Stainless
High carbon steel

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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

30 cm
35 cm
25 cm
20 cm

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RCC Structures Design
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

D = W (a² - b²)/4a²bq
D = W (a² - b²)/4abq
D = W (a² - b²)/8a²bq
D = W (a - b)/4a²bq

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

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

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RCC Structures Design
Long and short spans of a two way slab are ly and lx and load on the slab acting on strips parallel to lx and ly be wx and wy respectively. According to Rankine Grashoff theory

None of these
(wx/wy) = (ly/lx)
(wx/wy) = (ly/lx)²
(wx/wy) = (ly/lx)⁴

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

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

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