A prestressed concrete girder where the prestressing force is applied to the reinforcing tendons before the concrete has been poured.

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Multiple Choice

A prestressed concrete girder where the prestressing force is applied to the reinforcing tendons before the concrete has been poured.

Explanation:
The situation described is pretensioning. In pretensioned girders, the prestressing force is applied to the steel tendons before the concrete is poured. The tendons are then anchored and stretched while the concrete is cast around them. After the concrete gains strength, the tendons are released, transferring the prestress to the concrete and putting it in compression. This pre-pouring tensioning distinguishes it from post-tensioning, where tendons are tensioned after the concrete has cured, and from generic “prestressed” or “precast” terms that don’t specify the sequence of stressing.

The situation described is pretensioning. In pretensioned girders, the prestressing force is applied to the steel tendons before the concrete is poured. The tendons are then anchored and stretched while the concrete is cast around them. After the concrete gains strength, the tendons are released, transferring the prestress to the concrete and putting it in compression. This pre-pouring tensioning distinguishes it from post-tensioning, where tendons are tensioned after the concrete has cured, and from generic “prestressed” or “precast” terms that don’t specify the sequence of stressing.

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