RCC Structures Design
If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm², the length of the beam having nominal reinforcement, is

6 cm
12 cm
8 cm
10 cm

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RCC Structures Design
If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight 'w' per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]²
h = (W/Aw) [(1 + sin φ)/(1 + sin φ)]
h = √(W/Aw) [(1 - sin φ)/(1 + sin φ)]²
h = (W/Aw) [(1 - sin φ)/(1 + sin φ)]

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RCC Structures Design
For a ribbed slab

Width of the rib shall not be less than 7.5 cm
Overall depth of the slab shall not exceed four times the breadth of the rib
All listed here
Clear spacing between ribs shall not be greater than 4.5 cm

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