DESCRIPTION DATA A prestressed concrete simply supported beam of section 120 mm wide by 300 mm deep will be spanning 6 meters. The beam should be carrying a uniformly distributed live load of 4 kN/m. If the said beam is prestressed by a straight cable carrying a force of 180 kN at an eccentricity of 50 mm. 1. Determine the stresses calculation and diagram for top and bottom extreme fibres. 2. Explain whether the beam can safely carry the live load. 3. If the maximum eccentricity is 50 mm, calculate the maximum Prestress force to produce a negative stress diagram.

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