"Peggie Hall" wrote in message
...
Calif Bill wrote:
Water is 64# per cubic foot.

Water is 64# per cubic foot.

How'd you arrive at that? 'Cuz I'm driving myself nuts here trying to
convert lbs/gal (8.333) to lbs/cu.ft. and it's not working.


Out of the past, from engineering school. Salt water is a little heavier.
Fresh maybe 62# and average salt water 64#. Been a long time since I
graduated.

So to support at least 125# and not be
partially submerged, you will need at least 3 cubic feet of milk
cartons.

Don't forget to add the weight of at least 3 rolls of duct tape, which
will another 5 lbs.

So to support at least 125# and not be
partially submerged, you will need at least 3 cubic feet of milk
cartons.
Go some more, and the boat will float higher, and be easier to paddle.
A
rectangle will give the most bouyancy in the smallest area. But, for
style
points, make it pointy in front of the rectangle.

Would a shorter wider "beam" provide more bouancy than a longer narrower
one?

What a fun project!

--
Peggie
----------
Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html



Beam width does not matter. Is how much displacement. Narrow beam would be
tippy. Noah's ark, would have been a box shape. No need for any pointy
end. As it was not powered, just drifted with the winds. And a box gave
the most capacity for size.