Just pottering around the garage planning the new floor...
I have currently about 105mm of height to play with, between original concrete and intended floor height. Allowing for subfloor and actual flooring this barely leaves me 75mm for joist height.
Can I get away with this if I add a support mid-joist? It's a 2.7m span so would be 2 x 1.3m spans if I stack up in the middle. Seems I could easily beef this up by using wider than 45mm timber, 300mm centres instead of 400mm, and blocking between joists. But all the calculators I can find don't go below 95mm CLS, and also assume 400mm centres.
Confident I can make it strong enough, just don't know if it'll pass regs I guess.