A simply supported beam of span 9 m is subjected to two-point loads, each of 10 kN acting at, 1/3 of the span as shown in the figure. If the self-weight of the beam is neglected, then how much prestressing force is required to counter-balance the external loads if θ = 30°?

A simply supported beam of span 9 m is subjected to two-point loads, e

1.	A simply supported beam of span 9 m is subjected to two-point loads, each of 10 kN acting at, 1/3 of the span as shown in the figure. If the self-weight of the beam is neglected, then how much prestressing force is required to counter-balance the external loads if θ = 30°?
A.	5 kN
B.	10 kN
C.	20 kN
D.	30 kN
Answer» D. 30 kN

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A simply supported beam of span 9 m is subjected to two-point loads, each of 10 kN acting at, 1/3 of the span as shown in the figure. If the self-weight of the beam is neglected, then how much prestressing force is required to counter-balance the external loads if θ = 30°?

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