Wife and daughter want a small pool on the deck 10 footer on the deck any one know how I can figure out if the deck will hold it . !2 foot long span and 2x8 floor joists set at 16 inche centers. pools 10 feet across and 30 inches deep. 1100 gallon capacity 9 to 10 thousand lbs with people i think, just curious what the formula might be. I could shore it up.