Question

If the loading on a simply supported prestressed concrete beam is uniformly distributed, the centroid of the prestressing tendon should be as

• A. A straight profile along the lower edge of the kern
• B. A parabolic profile with convexity downward
• C. A straight profile along the centroidal axis
• D. A circular profile with convexity upward

Answer 1

The correct option is B A parabolic profile with convexity downward

For simply supported beam subjected to UDL, BMD is parabolic. For load balancing shape of cable shall be as per same profile (parabolic) with convexity downward.