Limited Distribution Width of Tension Reinforcement in Flange Plate of T-Beam Cross-Sections
Tips & Tricks
The German Annex to EN 1992‑1‑1, the National Addition NCI to Article 188.8.131.52 (2), recommends to dispose the tension reinforcement in the flange plate of T‑beam cross‑sections on a maximum of one width corresponding to the half of a computed effective flange width beff,i according to Expression (5,7a).
The reason for this recommendation were Eibl's and Kühn's tests , where it was proved that the continuing reinforcement ageing has a negative effect on crack distribution and uniform reinforcement load. It was also the reason why this regulation was already included in the DIN 1045:1975.
In RF‑CONCRETE Members, there is a control that you can use to define a distribution width of the tension reinforcement in the flange plate.
Do you have any questions or need advice?
Contact us or find various suggested solutions and useful tips on our FAQ page.