I would like to add on a 2 stall garage. I would like also to have a new shop area and was thinking about putting a basement under the garage. Is there a way to do this so a car can park in the garage. (Dumb question, or course there is a way, but is it feasable to do in a residential setting?)
Has anyone ever done this? Any comments?
Thanks,
Paul
This 654-sq.-ft. ADU combines vaulted ceilings, reclaimed materials, and efficient design, offering a flexible guest suite and home office above a new garage.
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Replies
I've worked on houses that had it done. It really wasn't that big of a deal. It would probably be quite expensive to purchase those hollow cores.
Price them, then make the decision.
blue
"I've worked on houses that had it done. It really wasn't that big of a deal. It would probably be quite expensive to purchase those hollow cores. "
What hollow cores?
Paul
http://www.spancrete.com/
Have at it - these guys help people do it all the time.
In my area it is common to just form it up and pour.
That is the way that mine was built in 79, but it does have a steel bean and post in the middle.
If I was doing it now I would use ICF's systems. They have some for floor/roof applications and can span about 30 ft. That also helps with heat lose. I lose a lot through the ceiling.
FHB had an article on building such a garage about a year or 2 ago.
I build a home that had a basement under the garage.
We used prestressed prepoured concrete panels 2' or 4' wide (cannot remember exactly). Length was 24'. Engineer certificate required.. Joints were filled with ethafoam rods and caulked, then poured a 2" decking over it.
Ended up with a 22 x 24 winecellar under the garage :=)
Project was fast with a crane. Costs not overly more than conventional. But that is relative to the availability, transport, weather etc.
Here's another precast company for you to look at:
http://www.eagleprecast.com/home.html
We used spancrete in the past too. Worked great, but very, very costly.
Any reason the shop has to be under the garage?
Maybe it's due to basement not being 'traditional' in this part (most parts, for that matter) of Texas--but it sure is nice to not have to get sheet goods down, or finished projects up a set of stairs.
Could you "bump" one of the stalls out to make a shop area behind it, for instance?
Just some out-of-the-box thinking for you.
In my case I have hill side so that the "backend" of the garage is 8ft above ground level so I have pair of 30" doors in the "basement" that opens on to ground level.
they one of the road like that. garage build on a steep hill with two floors. 2+3=7
Steel bar joists are going to be a very inexpensive method. Topped with steel decking and a thin slab. Depending on load and span, height can be as small as 10-12". Here's my roof (30' span):
PAHS Designer/Builder- Bury it!
I worked at a house for these people one time and they had a drive in garage over a basement space. The floor of the garage was framed with wood. Don't remember exactly what it all was but if you wanted to do it that way obviously you would need to have it engineered.
when I was a greenback framing carp I worked on a huge house on a golf course (Bearpath for all you Minnesotans) that had 18' walls under a 5 car garage. It left enough room for a full size basketball court underneath. I thougth the idea was really cool untill I dropped my 2 day old chaulkline down the wall and it shattered it's red guts all over the floor below.
In my area north pittsburgh it costs about 7$/square foot for a plank that will span 30 feet. Then you gotta put concrete on top to level it out as they have a camber to them, also in a area that gets ice and snow on vehicles you have issues with melt water, for this one client we found a rubberized spray on surface to make it water tight.
Dan