CIP RC/PT Girder Help

Post Tension

  • Loss for Analysis

The prestress response is calculated based on the tendon force after losses. The loss of prestress in the analysis is based on short-term and long-term losses. The short-term losses are calculated at Initial case, considering the anchor set and friction losses explained earlier. The Initial stage does not include any elastic shortening losses. The long-term losses depend on the loss type selected for the analysis. These can be lump sum, or time dependent methods.

The lump sum loss is based on a specified fixed amount of stress; however, since CIP RC/PT Girder uses transformed section properties, the effective loss of prestress is slightly less than the specified amount.