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Conference 7.286::home_work

Title:Home_work
Notice:Check Directory (6.3) before writing a new note
Moderator:CSLALL::NASEAM::READIO
Created:Tue Nov 05 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2100
Total number of notes:78741

629.0. "Living space under a garage?" by CRAIG::YANKES () Wed Mar 23 1988 21:04

    
    	Is it legal to have a living area (family room, that is) *under*
    a garage?  We'll be putting on an addition in a few years and due
    to the slope of the front yard, the garage has to be on the first
    floor (or else the driveway better be heated to melt the ice! :-).
    Given the area that would have to be filled in to put the garage
    on ground level on the first floor, it is probably easier to just
    dig out a foundation at the basement level, put the garage on the
    first floor and have a sizeable extension of the basement under
    it.  (No, it won't be cave living.  Due to the slope, this basement
    area can walk out into the back yard.)  It would be slightly more
    expensive (you'd have to see the actual dimensions to understand
    the difference in the amount of dirt coming in versus going out)
    but the additional living area would be really nice.
    
    	However, I've heard that it is illegal to have a room connected
    to a garage whose floor is lower than the floor of the garage. 
    The problem mentioned is that the auto exhaust fumes, being heavier
    than regular air, would sink down into the living area.
    
    	Is this correct?  I've only heard this from one person and wonder
    if any of you have run into the same situation.
    
    	Thanks!
    
    							-craig
T.RTitleUserPersonal
Name
DateLines
629.1the exhaust fumes can kill CLOSUS::HOEfrom Colorado with love!Thu Mar 24 1988 03:420
629.2It's OKFRSBEE::DEROSAbecause a mind is a terrible thingThu Mar 24 1988 10:530
629.3I sure hope not!SAACT3::SAKOVICH_ACogito ergo Zoom!Thu Mar 24 1988 12:4112
629.4check with local building inspector firstFREDW::MATTHESThu Mar 24 1988 12:4813
    That's why the pits in garages are now illegal.  You know before
    the hydraulic lifts they just drive a car over a pit and walk down
    steps to work on it.  Lots of guys have died that way.  CO is heavier
    than air.
    
    As long as you buld it so that there is no chance of air passing
    from the garage to living space below, I don't see why you can't
    build this.  That's a big condition though.
    
    As the saying goes, check with the building inspector in your area.
    If he had a brother who was a grease monkey who had a garage with
    a pit and is now ...  you won't have much chance of gettin that
    one by him.
629.5VINO::KILGOREWild BillFri Mar 25 1988 18:198
    >> Lots of guys have died that way.  CO is heavier
    >> than air.
    
    So are gasoline fumes.
    
    If the garage has a cement floor, and there's no direct access from
    the garage to the downstairs, I'd be comfortable - not otherwise.

629.6Thanks!CRAIG::YANKESMon Mar 28 1988 15:5025
    
    	Thanks for the replies.  What I think I'll do is talk to the
    building inspector with an approach like this:
    
    	- Total cement floor on garage level
    
    	- No direct access from the garage to the basement room(s) (i.e.,
    to get "downstairs", exit the garage to the middle room (up a step
    or two) and then down a staircase from there).
    
    	- Vapor barrier on the basement room's ceiling insulation.
    
    	- Since the garage floor will have to be sloped for any water
    run-off, the exhaust fumes would tend toward that corner of the
    garage.  In that corner, put a 3" exhaust fan at floor level that
    automatically goes on whenever the garage door is opened and stays
    on for X minutes after the door closes.  This should vent most of
    the remaining fumes outside.  (It will have to have a one-shot cut-off
    button, though, so that its not running all day when the garage
    door is open in the summer.)
    
    	The worst he can say is "no".  This isn't critical space, so
    if I can't get it, its not biggie.
    
    							-craig
629.7Sideways???MPGS::BRIGHTMANTue Mar 29 1988 11:2712
    
    I there anyway one can build it so that you your garage is at basement
    level? 
    
    My wife and I are building a house without a garage at this time, but  
    plan on adding a garage later.  The garage will have the doors at the
    end instead of the front with the driveway going down beside the
    garage.  This will give us a good size family room above the garage.
    
    Just a thought,
    
    TimB
629.8CO sensor alram for piece of mindPALMER::PALMERhalf a bubble off plumbTue Mar 29 1988 12:247
    	If you are concerned about carbon monoxide (CO) seeping into
    the living space why not put in a CO sensor alarm.  They look and
    act like smoke detectors.  I saw one advertised for about $75. 
    My uncle has a electric garage door opener with a CO alarm built
    in.  In case of high CO the alarm goes off and the garage door opens.
    
    						=Ralph=
629.9CRAIG::YANKESTue Mar 29 1988 12:3013
    
    Re: .8
    
    	Good suggestion, thanks.
    
    Re: .7
    
    	I've thought of that (plenty!).  The slope of the driveway would
    just be too great for winter usage.  Now, if only the Notes Readers
    could come up with an inexpensive way of heating a driveway to melt
    the snow and ice...
    
    							-c
629.10VIEW3D::YOSTWed Aug 23 1989 02:377
    
    re.6
    
      I'm curious, how thick is your garage floor and how is it supported
    underneath? 
    
    clay
629.11CRAIG::YANKESFri Aug 25 1989 17:1610
	Re: .10

>  I'm curious, how thick is your garage floor and how is it supported
>underneath?

	0 inches thick -- the addition that includes the garage being discussed
is still in the long-term planning stage.  Sigh.

								-c
629.12Try Pre-Cast ConcreteTRITON::FERREIRAFri Aug 25 1989 17:275
	My solution was pre-cast concrete, a tad more expensive, it would
	take time to extrapolate the $$, it's worth it to me,  No posts,
	no fumes, no fire hazards and will support a bulldozer.  Live load
	calculations are available thru pre-cast concrete companies like
	San-Vel in Ayer, Ma.