Rcc Structures Design - Study Mode
[#171] The live load to be considered for an accessible roof, is
Correct Answer
(C) 150 kg/m 2
[#172] The live load to be considered for an inaccessible roof, is
Correct Answer
(B) 75 kg/m 2
[#173] The Young's modulus of elasticity of steel, is
Correct Answer
(B) 200 KN/mm 2
Explanation
Solution: The maximum value is 275 KN/mm 2 and used for 200 KN/mm 2 .
[#174] 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
Correct Answer
(B) $${ ext{D}} = frac{{{ ext{W}}left( {{{ ext{a}}^2} - {{ ext{b}}^2}}
ight)}}{{4{{ ext{a}}^2}{ ext{bq}}}}$$
[#175] In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength
Correct Answer
(D) 400 kg/cm 2