The time has come to go shopping for a new bed, and SWMBO and I were out looking at the possibilities. We are both interested in a water bed of a particluar design. I do not really feel like typing out history of bed types, reasoning behind it, etc, since I want to keep this short and to the point. Translated, that means I don't really want to hear about different beds I should be considering. I want to know about how to calculate loads and load bearing capacity before we make a decision.
What I need to know is how to calculate the ability of our floor to bear the load of this particular bed. The total weight is going to be just under 1000 lbs. The floor is in an old stone farmhouse, and consists of old pine boards approximately 7/8" thick. The joists are set on 24" centers, and are mixed fir and chestnut, approximately 2 1/2" x 7 3/4". The main beam is red oak, 7 1/2" x 10". The joists are mortised into the main beam at the center of the house, and set on a stone sill on the outer wall.
If I had to make a guess I would say the floor would support the weight, but I would feel a little better with some objective figures. Having written that, if anyone here has the formula for figuring this stuff out, I would appreciate hearing about how to do it.