? about a Bracket

[John R]

I'm no enjineer but I'm guessing that how many cubic feet of water inside the bracket but below the waterline would give you how much boyancy of the bracket's chamber....

Ok - this got me thinking and I looked it up:

Weight water:62.416 pounds per cubic foot at 32°F
Weight water:61.998 pounds per cubic foot at 100°F
Weight water:8.33 pounds/gallon, 0.036 pounds/cubic inch
Weight air: about 1 ounce per cubic foot at room temp

So to add 400 pounds of floatation, only 6.5 cubic feet need to reside below the waterline of the bracket plus some additional cubic feet of air to make up for the added weight of the bracket itself(the air above the waterline does not contribute to boyancy but heavier materials above would detract from the boyancy)

[ December 16, 2002, 09:28 AM: Message edited by: John R ]