Framing A Wood Garage Floor?

 
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Old 11-25-2011, 05:29 AM   #1
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Framing A Wood Garage Floor?


Has anyone ever framed a garage floor out of wood floor joists and plywood?
The span will be approx. 14' from wall to wall. 2x12 12"center, double layer of 3/4" ply enough?
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Old 11-25-2011, 11:12 AM   #2
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Re: Framing A Wood Garage Floor?


No, it's not. Your engineer will tell you what to do.

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Old 11-25-2011, 11:59 AM   #3
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Re: Framing A Wood Garage Floor?


Sorry to act like a mod but I think this thread is a very, very dangerous topic and should not be discussed here.

Scary......
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Old 11-25-2011, 12:21 PM   #4
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Re: Framing A Wood Garage Floor?


Quote:
Originally Posted by Dave in Pa
Has anyone ever framed a garage floor out of wood floor joists and plywood?
The span will be approx. 14' from wall to wall. 2x12 12"center, double layer of 3/4" ply enough?
Sounds like a bad joke.
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Old 11-25-2011, 12:26 PM   #5
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Re: Framing A Wood Garage Floor?


just dont drive any tanks on it
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Old 11-25-2011, 12:30 PM   #6
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Re: Framing A Wood Garage Floor?


Never heard of a wood framed garage floor before. Can't imagine even being legal because of a fire issue.

The real question is why would someone want one even if it was legal?
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Old 11-25-2011, 12:57 PM   #7
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Re: Framing A Wood Garage Floor?


I remember my dad parking our converted transit bus RV in a old building in Fort McMurry. The building was a workshop built in the early 40's, it had rough sawn plank floors. Went in ok. Next summer was another story. Let's just say, good thing there was no crawl space or basement. That was my first recollection of seeing a undersized tow truck doing a stationary wheel stand. We ended up digging it out. Dam those were the days.
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Old 11-25-2011, 01:19 PM   #8
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Re: Framing A Wood Garage Floor?


This is not a joke, but real. The question was brought to me.
Had a garage at a near by farm, had old 2x8 rough sawn lumber, held cars back in the 50's. Talked to a Engineer, and he said that a house is rated at 40 lbs. per sg. ft. live load, and a parking garage has to meet/be, 50 lbs. per sq. ft. live load. BUT he did say about a "punture" rate, never got back to me! He said that the 12" spacing, 2 x 12, 1 1/2" ply, would make the 50 lb. per sq. ft. rate.
Just looking for help. As far as the codes? A garage floor does not have to pass a fire rate, just for the fire spead up, to living space.
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Old 11-25-2011, 01:30 PM   #9
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Re: Framing A Wood Garage Floor?


Bad Idea. Just because an engineer says it can be done, doesn't mean it should be done. Why would you want to frame it rather than pour? Cost? Just to see if you can?
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Old 11-25-2011, 01:40 PM   #10
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Re: Framing A Wood Garage Floor?


Up in Vancouver, BC, Granville, Island has a wooden parking lot. But it is all timber framed. 12 x 12 framing and 8 x 12 planks. So it's technically "doable".
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Old 11-25-2011, 02:02 PM   #11
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Re: Framing A Wood Garage Floor?


We do it all the time over here 2 car garage downhill lot each side gets a double 4X12 bolted together in the middle a single. 2X12- 12"oc inch and 1/8 T&G and then 2" of concrete They drew it we build it and it works
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Old 11-25-2011, 02:04 PM   #12
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Re: Framing A Wood Garage Floor?


Quote:
Originally Posted by EmmCeeDee View Post
Bad Idea. Just because an engineer says it can be done, doesn't mean it should be done. Why would you want to frame it rather than pour? Cost? Just to see if you can?
And a bridge could never be built out of wood
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Old 11-25-2011, 02:37 PM   #13
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Re: Framing A Wood Garage Floor?


I know it can be done. We have a small wooden bridge here going over the train tracks.

I just think when we are talking about the amount of weight that will be put on top of the floor, this could get dangerous fast.

Also maybe a structure could support that amount of weight but that huge amount of weight comes onto the floor fast, not giving the structure time to evenly distribute the weight.

I know that sounds crazy but I'm a bit looney anyway so......
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Old 11-25-2011, 02:46 PM   #14
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Re: Framing A Wood Garage Floor?


Can it be done? Yes. Can we offer you advise on how to do it? No. This is a project that requires a structural engineer to not only calculate the floor framing, but also verify that the wall framing and footings supporting the floor framing are adequate. The engineer will need to visit the site to make recommendations.
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Old 11-25-2011, 03:05 PM   #15
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Re: Framing A Wood Garage Floor?


Here's a thread with a framed garage floor.

http://www.contractortalk.com/f14/oh...new-one-89300/

The engineer didn't get back to you because you didn't hire him?

The answer he gave you sounds like the classic mumble mumble that's what you get for free. Just pay the man, have it designed and sleep at night.
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Old 11-25-2011, 03:19 PM   #16
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Re: Framing A Wood Garage Floor?


earlier this year we were approached by an architect who we've done work for in the past.. he had drawn up a $1.3 million dollar house which he asked us to price up the icf founation, framing and wood siding..

anyhow the house included a 2 car garage with a wood framed floor. the drawing spec'd 16" tji's 12.oc with 2 layers of t&g plywood that was to have offset seams then a 3" overpour. we all were wondering how that would be able to structuraly work... anyhow we were underbid by about $150,000 so we didnt get it.
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Old 11-25-2011, 03:58 PM   #17
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Re: Framing A Wood Garage Floor?


It's definitely doable. No question. I have seen quite a few. My response was just a quick reply to say "you are definitely going to need an engineer's stamp for this" The 14' span is your big problem.

One place I looked at had a 3 car garage, dbl 2x12's 12" OC and double layered ply, but I think it was PT ply. They were putting a home theater underneath. 2 huge glue lams running between the bays.

Get the engineers stamp on this. Don't take any liability on this.

They do alot of poured garages over...not sure the exact term...corrugated metal? And that floats quite a ways.
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Old 11-25-2011, 04:25 PM   #18
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Re: Framing A Wood Garage Floor?


Quote:
Originally Posted by KentWhitten View Post

They do alot of poured garages over...not sure the exact term...corrugated metal? And that floats quite a ways.

That would be pan decking. But even in this situation. I don't think that would fly. Who know but a engineer to design this.
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Old 11-25-2011, 05:09 PM   #19
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Re: Framing A Wood Garage Floor?


On chris Johnsons site. they put steel beams and q decking.

Check out framerPDX's threads they have some

talk to an engineer first of all
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Old 11-25-2011, 06:34 PM   #20
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Re: Framing A Wood Garage Floor?


engineers are overrated

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