Spammers_Should_Be_Shot said:I'll give another example: A typical Friday night at my house. I have a
queen "soft sided" waterbed (~800lbs.). On the bed let's say there's 600
lbs. (if I weigh 180lbs. that leaves 420lbs. for 3 fit females - and if
they're thin, maybe there's enough left over to allow a midget to join in).
Also, any weight being supported by the swing wouldn't count. So we have a
live load total of 800+600=1400lbs. The bed area is ~5'x7'=35s.f. Keep in
mind that the total load is being distributed over an area much greater than
35s.f. (i.e. adjacent joists are carrying a portion of the weight as
distributed by the subfloor). For "worst case scenario let's say the weight
WAS all compacted into the 35s.f. At a designed load of 40lbs. per s.f.
that would be 35s.f. x 40psf = 1400 lbs. So it would support the weight
fine.
<golf clap>
It's always nice to see a finely honed engineering mind applied to real
problems.
Dally