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Old 03-25-2009, 11:13 AM   #1
Engine-Ear
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Default building a mezzanine

Hi everyone,

I would like to share with you my garage build and follow-up with a couple of questions.

By way of introduction, I bought a 30' x 40' steel building kit from Miracle Truss. Eaves are 18' and peak height is 24'. Spent 6 months last year building it to the point shown.

Anyway the 1200 sf area will be divided into to main areas: half for cars and parts storage, half for working on stuff.

Regarding the cars/parts storage:
One pic shows 3 garage doors leading to this area. I plan to have 4-post storage lifts at each of those bays, as well as a mezzanine above that area. The mezzanine would be self supporting and not dependent on the building's trusses.

What I am trying to do is design a mezzanine and a staircase.

I originally wanted to build the support structure out of steel (I-beams, etc) but a couple of people recommended lumber for better fireproofing (comments?).

As for load calculations vs. material usage, I am not sure what to specify. My goal is to have pallet racking up there with the potential to store LOTS of stuff. ...Not talking engines but certainly sheetmetal, brackets, tires, wheels, seats, glass, etc.

I really need to get moving on this NOW because I have 3 cars to part out sitting in the driveway and a couple of my neighbors are already calling the fuzz to complain.
Attached Images
File Type: jpg 28 sep garage progress 001.jpg (56.6 KB, 322 views)
File Type: jpg 28 sep garage progress 003.jpg (141.7 KB, 252 views)
File Type: jpg 28 sep garage progress 005.jpg (146.1 KB, 265 views)
File Type: jpg 28 sep garage progress 006.jpg (141.3 KB, 252 views)
File Type: jpg mattcave.jpg (141.2 KB, 354 views)
File Type: jpg mattcave (4).jpg (37.8 KB, 293 views)
File Type: jpg mattcave (7).JPG (140.2 KB, 248 views)

Last edited by Engine-Ear; 03-25-2009 at 11:22 AM.
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Old 03-25-2009, 09:53 PM   #2
AGBill
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Default Re: building a mezzanine

There are companies that sell steel mezzanine kits that you can assemble.

http://www.sourceequipment.com/mezza...ms-pricing.htm

They are quick and easy, well engineered but like anything that is convenient, they are a bit pricey....
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Old 03-25-2009, 10:47 PM   #3
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Default Re: building a mezzanine

Thanks, AGBill, at least this gives me a start...I will contact them and see how much it'll hurt for one of their systems.

Other input is also most welcome. Thanks in advance!!
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Old 03-25-2009, 10:57 PM   #4
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Default Re: building a mezzanine

Grainger has a bunch.
http://www.grainger.com/Grainger/wwg...lResultsSearch
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Old 03-25-2009, 11:07 PM   #5
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Default Re: building a mezzanine

Matt - keep an eye on Craigslist, search for mezzanine or pallet racking. On the Minneapolis list there are always people selling used mezzanine components out of factories or warehouses, I just checked Milwaukee and there are a couple on there now.

Stuart

Edit: I'd want to talk to a structural engineer about it, but if you're going to have four post lifts lined up along that end of the garage, I wonder if you could extend the vertical members of the posts up to support the mezzanine?

Last edited by Stuart in MN; 03-25-2009 at 11:12 PM.
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Old 03-26-2009, 09:28 AM   #6
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Default Re: building a mezzanine

Here I am.
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Old 03-26-2009, 09:43 AM   #7
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Default Re: building a mezzanine

Quote:
Originally Posted by Mezzanine View Post
Here I am.
well, my work is done!

Last edited by Engine-Ear; 03-26-2009 at 09:48 AM.
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Old 03-26-2009, 09:47 AM   #8
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Default Re: building a mezzanine

Stuart, thanks.

Adding the mezzanine to the lifts is a clever notion and helps minimize crowding along the part of the floor where the vertical posts will reside.

The used pallet rack and used lifts sound like a wise move.
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Old 03-26-2009, 04:29 PM   #9
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Default Re: building a mezzanine

how big of a mezzanine do you want?
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Old 03-26-2009, 10:11 PM   #10
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Default Re: building a mezzanine

roughly 20 X 30, hovering over three, four-post lifts.

Quote:
Originally Posted by KMR Construction View Post
how big of a mezzanine do you want?

Last edited by Engine-Ear; 03-27-2009 at 06:31 PM.
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Old 03-27-2009, 07:07 PM   #11
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Default Re: building a mezzanine

thats gonna be too big to span without a post in the middle. Otherwise consult your local lumber yard about doing some engeneering.
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Old 03-29-2009, 12:20 PM   #12
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Default more on building a mezzanine

KMR, I agree...

so, here is a scan of a sketch...the 19kB PDF limit makes it pretty difficult so here's a .jpg file.

The illegible legend says:

[] = 1 sq ft

[//] = Truss 'keepout' area

== = Horizontal Support

---- = 2-by-X Joists
(blue)


I am suggesting staggered joists because they are shorter (more manageable, esp. at 13 feet UP) and the system will still 'interlock' all the vertical supports, in my opinion.

Your feedback is most welcome!
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File Type: jpg Lofty Issues.JPG (20.1 KB, 272 views)
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Old 03-29-2009, 02:19 PM   #13
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Default Re: building a mezzanine

ok, A 2x8 will span that but go 2x10 joist 16"o.c. for the beams 2- 1 7/8" x 12" LVL with the 3 colums (steel or 4x4 pt) will give you a very strong floor. Use 3/4" T&G plywood
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Old 05-09-2009, 11:01 AM   #14
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Default Re: building a mezzanine

Thanks again.

I am going with wood instead of steel...btw, Stuart, "engineer9" (aka Gary) from the PY board is helping me with some structural details for this.

I will keep this thread up to date with progress.
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Old 05-09-2009, 01:08 PM   #15
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Default Re: building a mezzanine

Let me start by saying the shop looks great.
I would think strongly about extending the post of the 4-post lifts since they are designed to support the loads they were origianly set up for. Any additional weight may cause them to fail, and warrenties will be voided.
I would offset the supports, for your type of beams, so that you have the option to move your lifts if need be. Plus extend them at least 3' further out past the lifts so you can have access to get between the lifts as well.
I would do this front and back to give you the correct structural support needed and then tie them into the shop frame work to keep things from shifting.
Now the size needed for the span and weight is up to an engineer to figure out.
Good luck and keep us posted.
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Old 05-09-2009, 08:48 PM   #16
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Default Re: building a mezzanine

I love the look of the garage. Nice choice.

Jim
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Old 05-10-2009, 04:46 AM   #17
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Default Re: building a mezzanine

A friend of mine just bought Unistrut stuff. And I like how it all went up.
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Old 05-10-2009, 10:32 PM   #18
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Default Re: building a mezzanine

Thanks for the feedback, guys. As for the look, I wanted to go a little more Jetsons/unusual but the cost of the kit went crazy when my creative drawings were evaluated.

Based on your (and others') recommendations, the lifts will be independent of the mezzanine, and the mezzanine will be independent of the building.
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Old 09-29-2009, 11:10 PM   #19
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Default Re: building a mezzanine

Back again after a long hiatus... the mezzanine has taken a dramatic turn for the better.

I ended up going with steel structure with a concrete floor. Roughly 21 x 29 with a floor that's 12 feet up so I can put 6 cars (on back yeard buddy type lifts) under it. No support posts in the middle, either.

More images coming after I get the stair case stuff in.
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File Type: jpg mattzanine (10).jpg (141.5 KB, 435 views)
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Old 09-30-2009, 01:15 AM   #20
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Default Re: building a mezzanine

WOW need more details.
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