Why wires strands during pre-stressing work
What is the reason that all wires or strands should be stressed at the same time while doing pre-stressing work, if more than one wire or strand is taken in the same duct?
Expert
If wires or strands are stressed separately within the same duct, then those stressed strand or wires will bear against those unstressed ones and trap them. That is why; the friction of the trapped wires is will be more than required.
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