Hi need some advice - starting at the ground up room 2700 long by 1200 wide, I am building new subfloor for ensuite to match floor height of existing building. Running bearers out from building 1200 what spacings for bearers & joists? Am using steel posts with flat welded on top to be bolted to seasoned hardwood bearers 5x2" Joists pine 900x35 flooring - secura interior fibro 600wide 20mm thick
cheers