Define the post-tensioning

Post-tensioning methodology varies from country to country. In the USA it is common to use the "banding" technique for detailing tendons in two-way slabs. Banding means concentrating the tendons over support points in one direction, and distributing them uniformly in the orthogonal direction. This method is generally used in conjunction with full-panel design strips. That is, column and middle strips are not used.

In the United Kingdom, engineers are directed towards Technical Report 43 and that document encourages the use of full panel design strips with the banding technique. This method, with bonded tendons, is used in this tutorial.

Note: RAM Concept has two layers for tendons called latitude and longitude. Refer to "Using the latitude and longitude prestressing folders" for more information.

Note: The tutorial in Chapter 49 explains the use of Strip Wizard to establish an estimate of the number of strands required for the critical band.

Note: For use of the tendon parameters layers as an alternative and perhaps quicker means of defining prestressing, please refer to "PT Flat Plate Tutorial: ACI 318-08".

Define the latitude tendons Pt. 1

Define the latitude tendons Pt. 2

Define the latitude tendons Pt. 3

Define the latitude tendons Pt. 4

Define the latitude tendons Pt. 5

Define the longitude tendons Pt. 1

Define the longitude tendons Pt. 2

Define the longitude tendons Pt. 3

Define the longitude tendons Pt. 4

Define the longitude tendons Pt. 5

Define the longitude tendons Pt. 6

Parent topic: PT Flat Plate Tutorial: EC2 / TR43