Evening. I need to work out the weight/force of a mass on a beam and block floor upstairs. KNm2 to be more precise but I'm baffled. Anyone know how? Mass is 350kg spread over 1000mm x 660mm area. This will be spread over 3 beams against the wall that the beams sit on with 4 inch bearing solid brick. It's a new house so all current regs and that count. Been a bricky I have seen packs of blocks lifted on to these floors but when it's your own it's best to make sure thanks.