Structural Design Specifications

1: If b is actual width of a flange, D_t is the thickness of the flange, `b_omega` is the breath of the web, l_o is the distance between the points of zero moments in a beam, the effective width of the flange, is

A. `(l_0)/((l_0//b) + 2) + b_omega`

B. `(l_0)/((l_0//b) + 3) +2 b_omega`

C. `(l_0)/((l_0//b) + 4) + b_omega`

D. `(0.5l_0)/((l_0//b) + 4) + b_omega`

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2: A solid slab spanning in two directions at right angles and carrying a uniformly distributed load, is supported on beams. If the length of two such beams A and B perpendicular to each other are x and y (x<y), the load shared by the beam A, is

A. `1/2 xy`

B. `1/3 xy`

C. `1/4 x^2`

D. `1/4 y^2`

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A. near middle of end span is +`(omega L^2)/(10)`

B. at support next to end support is -`(omega L^2)/(10)`

C. at middle of interior spans is +`(omega L^2)/(12)`

D. at other interior supports is - `(omega L^2)/(12)`

E. all the above.

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A. `12 phi`

B. `16 phi`

C. `20 phi`

D. `24 phi`

E. `30 phi`

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5: The value of f_bct in the formula ` t = sqrt((3W)/(f_(bct)) (A^2 - B_2/4))` for calculating the thickness of a Rectangular base, according to IS : 800-1982, is

A. 1500 kg/`cm^2`

B. 1650 kg/`cm^2`

C. 1800kg/`cm^2`

D. 1890 kg/`cm^2`

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