rcx132
Philip
- Messages
- 2,816
- Location
- London, UK
It's hard to say as there are already margins in the beam calculations. Eg my last beam was supposed to deflect by 6mm according to calculations, in reality there was no measurable deflection. A structural engineer knows where to apply safety margins and how much.For that sort of calculation I take a baseline guess at what will be strongest, then build something twice as big.
I studied all this stuff, but never used the skills and have forgotten a lot, so usual disclaimer applies, assume I know nothing.