"The PSF loading of the floor as a whole is irrelevant except insofar as it relates to the total load in the room." - That helps a ton, thanks!The PSF loading of the floor as a whole is irrelevant except insofar as it relates to the total load in the room.
has the ends of the floor joists, or is it a (likely) double bearing joist on the wall
Are you saying to block the joists with perpendicular pieces between joists? or putting another piece of wood to "sister" the joist? or something else?Measure, go to the lumberyard, buy the 2xX, cut to length, fit in place (you might have to cut it short, but this is fine, as you won't crush the existing joist end) and nail it well along the top and bottom - every 6-12".
Left to right, so next to the wall, which I understand is better.In that picture. Will the row of batteries be oriented left and right or near to far?
Yes, that's optimal. A lot of weight can be carried there. I wouldn't be concerned, as long as you don't have weight only resting between the joists. (Supported by flooring only)Left to right, so next to the wall, which I understand is better.
I remeasured. Gonna have to go on the other wall now actually. Anyways.Yes, that's optimal. A lot of weight can be carried there. I wouldn't be concerned, as long as you don't have weight only resting between the joists. (Supported by flooring only)
I-beam joist. Interesting.