How to change imperial to metric units in StaadTower v10.00.00
Metric option is locked
Currently there is no option to model in metric units in STAADTower or Open Tower. The development team is working on it and it should be available in a few months. I would suggest that you start using the latest OpenTower version 10.00.03.00 in place of STAADTower as the former has replaced the later.
STAAD(X) Tower CONNECT Edition x64 Version:10.00.00.00 does support metric units though but that is for tower design as per the Eurocodes.