Answer to Question #236461 in Civil and Environmental Engineering for Viktoriya

Question

7. In prestressing work, if more than one wire or strand is included in the same duct, why should all wires/strands be stressed at the same time?

Answer 1

The wires/strands are stressed individually within the same duct to allow them bear against those unstressed ones and trap them in. This helps increases the friction of the trapped wires which is not required.