Yes -- but houses built prior to that requirement don't all
follow it. And frankly, some contractors don't seem to see
a difference between 6" and 18" when it comes to things like
that. There are lots of places where it's not allowed at all.
Scott Lurndal wrote:
On 1/5/2006 7:00 PM Mike Berger mumbled something about the following:
Must be an awful lot of gas fumes then since gasoline needs approx a
14:1 ratio for combustion (litte more, little less works, but not a
whole lot more/less). With a typical 2 car garage having about 3000 cu
ft of space, that means it would need about 200 cu ft of fumes, which is
an awful lot of gasoline to create that amount of fumes. Remember, it
isn't gasoline itself that is flammable, it's the fumes.
That's combustion. A lot of hydrocarbon vapors have a LEL (lower explosion
limit) concentration of
about 1 to 1.5 percent by volume in air. Let's use 1 percent as an example
since I don't have a
calculator and will be doing the limited math in my head. That 1 percent is
about 30 cubic feet of
vapor in your garage.
One pound mole of a material occupies about 360 cu ft at standard temperature
and pressure. So 30
cubic feet is about 1/12 of a pound mole. Something like benzene has a
molecular weight of 78, so a
pound mole of benzene weighs 78 lbs. 1/12 of 78 is about 6.5 lbs, which is just
about a gallon of
benzene. (I think benzene is about 6.2 lbs/gal, but not sure on this.)
The other consideration is just where you knock the can over in relationship to
the ignition source.
If it is at the far end of the garage, a gallon of benzene will probably not
reach LEL near the
pilot light. Knock it over next to the pilot light, and you'll be doing your
impression of a
Science, the other red meat.
Here in New England, our furnaces and water heaters are typically in the
basement. We worry about sawdust and fumes, but never hear of a problem.
In Florida, where construction is probably similar to Dave's area, every
one of my relatives has a gas-fired furnace and water heater in the
garage. The same garage contains cars, lawn mowers, weed wackers, dirt
bikes, and 99 other gasoline powered devices.
Well duh, inside the building... It's obviously not an airtight
My indoor, basement located, oil fired furnace and water heater, here
in New England, also draw burn air from the inside of the building.
Are you guys going to tell me it dosen't, just like the 1/2 space
breakers that didn't exist? <G>
On Fri, 6 Jan 2006 15:32:02 -0700, "Charles Spitzer"
I agree. Some do, some don't. Variations in installations are huge,
especially in different locales.
I lived in a home built in 1980 that had an oil-fired furnace in the
garage, 6 feet from a car, with three underground walls, an insulated
front wall, and a family room over it, that drew burn air from inside
I just spent two days in another thread being told I was imagining
things in my electrical panel. <G>
Geeze I just wanted an opinion on using a woddstove in my garage. I didn't
expect all this debate. I gues what I gather from all this malarchy is that
I can put the stove in the garage, just as long as I don't use gasoline by
the gallon for cleaning the oil spills, RIGHT?
I figured on the "ole' guys in here to say, "Iv'e been using a stove in my
garage for 50 years" or the like.
And I still didn't get a rebuttal on my mobility base question.
Searcher, Still searching for an answer
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