Re: polyethelyne foam for flotation--Houseboat #481
--- Inbolger@yahoogroups.com, "Paul" <bys@c...> wrote:
Hi Paul,
O.K.,here goes my best blind stab at it and remember,I'm firing on
all two neurons to increase my chances of success :-)
1 cubic foot of water(fresh) weighs 62 lbs.(aprox.)
1 cubic foot of foam will displace 62 lbs.(aprox.) of water
therefore,I say you will need 44.032258 (exactly) cubic feet of foam
to float the weights given.
I have not deducted the inherent floatation factors for wood,human
bodies etc....
Sincerely,
Peter Lenihan,who can't wait to collect his prize :-D
--- Inbolger@yahoogroups.com, "Paul" <bys@c...> wrote:just wants to
know how much of the stuff (sq. ft.) to lay in under the floor.
I wouldn't bother on a hulled houseboat like 481. The boat will never
flip or be knocked down, and if you're caught in any really nasty
weather batten down the hatches (ie: close all windows and doors) and
the huge watertight volume of the cabin will make you float as light
as a cork. You might be uncomfortsble, but you WILL keep floating.
If it's a real concern, make the extreme ends of the hull air tight
chambers (end flats) by adding another sealed bulkhead. You can add a
couple of deck plates for access and inspection. If you really must
have foam, I used the pink sheets about 1" thick from Home Despot and
glued them into a solid mass under the cockpit of my Micro.
Bruce Hector
Whose 38' steel pontoon houseboat has no foam whatsoever, except
under his sleeply little noggin and tired ol' backside after dark.
know how much of the stuff (sq. ft.) to lay in under the floor.
I wouldn't bother on a hulled houseboat like 481. The boat will never
flip or be knocked down, and if you're caught in any really nasty
weather batten down the hatches (ie: close all windows and doors) and
the huge watertight volume of the cabin will make you float as light
as a cork. You might be uncomfortsble, but you WILL keep floating.
If it's a real concern, make the extreme ends of the hull air tight
chambers (end flats) by adding another sealed bulkhead. You can add a
couple of deck plates for access and inspection. If you really must
have foam, I used the pink sheets about 1" thick from Home Despot and
glued them into a solid mass under the cockpit of my Micro.
Bruce Hector
Whose 38' steel pontoon houseboat has no foam whatsoever, except
under his sleeply little noggin and tired ol' backside after dark.
I have been considering inserting some of this stuff
http://www.foambymail.com/Polyethylene.html
under the floor and gluing it in place. Does anyone have any
flotation data so I can at least in my own mind feel confident that
the shanty or shanteuse will sit level and comfortably seat the
passengers whilst full of water. Hopefully we will not have to test
this theory but if anyone has information on the subject I would be
interested. I am somewhat familiar with the theory of flotation but
not enough to calculate the total flotation requirements. Most of the
weight on the boat is wood, epoxy, passengers, mechanicals and
liquids. Liquids are special and unless it is something like epoxy,
Just the weight of the container would go into the calculation. Have
fun there will be prizes of unmentional value handed out at the
Kingston Messabout to the most accurate and creative answer.
Here is my etimate of the weights
wood underwater 800 lbs
wood above water 500 lbs
epoxy 12 u.s. gallons
passengers above water 500 lbs
mechanicals (motor, toilet, bed, sink, anchor, etc.) 500 lbs
batteries 150 lbs
personal gear and food 100 lbs
dingy on roof 80 lbs
Paul McLellan a bit crazy with a bad rash of air bubbles on a freshly
epoxied sheet of ply just wants to know how much of the stuff (sq. ft.
) to lay in under the floor
http://www.foambymail.com/Polyethylene.html
under the floor and gluing it in place. Does anyone have any
flotation data so I can at least in my own mind feel confident that
the shanty or shanteuse will sit level and comfortably seat the
passengers whilst full of water. Hopefully we will not have to test
this theory but if anyone has information on the subject I would be
interested. I am somewhat familiar with the theory of flotation but
not enough to calculate the total flotation requirements. Most of the
weight on the boat is wood, epoxy, passengers, mechanicals and
liquids. Liquids are special and unless it is something like epoxy,
Just the weight of the container would go into the calculation. Have
fun there will be prizes of unmentional value handed out at the
Kingston Messabout to the most accurate and creative answer.
Here is my etimate of the weights
wood underwater 800 lbs
wood above water 500 lbs
epoxy 12 u.s. gallons
passengers above water 500 lbs
mechanicals (motor, toilet, bed, sink, anchor, etc.) 500 lbs
batteries 150 lbs
personal gear and food 100 lbs
dingy on roof 80 lbs
Paul McLellan a bit crazy with a bad rash of air bubbles on a freshly
epoxied sheet of ply just wants to know how much of the stuff (sq. ft.
) to lay in under the floor