A simply supported rolled steel joist 8 m long carries a uniformly distributed load over it span so that the maximum bending stress is 75 N/mm. If the slope at the ends is 0.005 radian and the value of E = 0.2 106 N/mm2, the depth of the joist, is________________?

A. 200 mm

B. 250 mm

C. 300 mm

D. 400 mm
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