Answer to Question #236888 in Mechanical Engineering for Emmo

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

If wires are stress individually inside the same duct, then those stressed

wires will bear against those unstressed ones and trap them. Therefore, the friction

of the trapped wires is high and is undesirable.