Bundling of Strands in Post Tensioned Concrete Beam
Bundling of Strands in Post Tensioned Concrete Beam
(OP)
For slabs there are some clearly defines rules (in the US anyway) regarding how to bundle unbonded tendons in slabs. Are there any similar such rules for bundling tendons in beams? I would think you wouldn't need to have them in nice straight strips like in a slab, and could group them into more circular bundles that then splay out at the ends.
If not rules, I would appreciate knowing how other do it. Thanks
If not rules, I would appreciate knowing how other do it. Thanks






RE: Bundling of Strands in Post Tensioned Concrete Beam
For example, a beam with 15 tendons may be broken into (3) groups of 5. The bundle of 5 would be 2on top 3 on bottom. This will keep the CGS of that bundle approximately in the middle of the group. Then the support height would be calculated to be 1/2" lower than the CGS at a particular location.