Temporary staging for casting PSC Box Girder for a ROB over the Railway span shall be removed a) after hardening of concrete b) before hardening of concrete c) during concreting d) after stressing the cables

Temporary staging for casting PSC Box Girder for a ROB over the Railway span shall be   removed
a) after hardening of concrete
b) before hardening of concrete
c) during concreting
d) after stressing the cables
by

1 Answer

Answer :

d) after stressing the cables
by

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