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Attic Truss versus Loft

Crazy68Dart

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Apr 10, 2010
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484
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NE Ohio
I know the best answer is attic truss... but they are pushing be out of my budget.

Have any of you used a scissor truss (which I was going to have over a portion anyway for a future lift) and then built a loft/platform for additional storage?

This will be a pole/post frame build, looking at 28x36 max would like 10' walls (8' tall doors) but might drop to 9' walls if the 7' tall doors are considerable less expensive.

Thanks.
 
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BFBOB

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Sep 20, 2011
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Too many variables. Roof material-shingles much heavier than metal. Snow load? what part of country? Clear span or center posts? Planning on supporting joists from trusses? Expected load in the loft?
I'm not an engineer, but these are some of the considerations in engineering such a build. Yeah, you probably need an engineer unless you can find suitable existing plans. Depending on where you are, you may still need sealed plans, permits etc. Even if you don't, I'd call it cheap insurance to get an engineer to look over your plans. 28' span is not trivial!
 

dipper

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Jun 27, 2007
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759
Location
Rochester, NY
i did a 20' clear span with ceiling joists and rafters to create an attic space.
span tables will be your freind, but 28wide you will be into engineered lumber and likely
stamped plans depending on what your town allows.
 
OP
C

Crazy68Dart

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NE Ohio
Actually, I was thinking more of a self-standing loft. So basically constructing a platform inside.
 
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John in OH

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Jun 2, 2007
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SE Ohio & Eastern Virginia
Actually, I was thinking more of a self-standing loft. So basically constructing a platform inside.

I dunno .... you said you were planning for 10' walls ... even with scissor truss you are going to be cramped for headroom in a loft. What about using attic truss on 1/2 of the building and matching scissors on the remaining half over the future lift area?

I used attic truss in my new building and I thought the cost for 34' open span was quite reasonable .... IIRC they were about $145 each. Check out Post #49 of my build thread: http://www.garagejournal.com/forum/showthread.php?t=98038&page=3
 

DynoDave

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Mar 25, 2005
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Michigan
IWhat about using attic truss on 1/2 of the building and matching scissors on the remaining half over the future lift area?

I used attic truss in my new building and I thought the cost for 34' open span was quite reasonable .... IIRC they were about $145 each. Check out Post #49 of my build thread: http://www.garagejournal.com/forum/showthread.php?t=98038&page=3

That's what I did with mine as well. The $$$ difference between storage trusses and scissor trusses was very small.
 

Daniel Dudley

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Sep 4, 2009
Messages
3,546
I know the best answer is attic truss... but they are pushing be out of my budget.

Have any of you used a scissor truss (which I was going to have over a portion anyway for a future lift) and then built a loft/platform for additional storage?

This will be a pole/post frame build, looking at 28x36 max would like 10' walls (8' tall doors) but might drop to 9' walls if the 7' tall doors are considerable less expensive.

Thanks.

You need to stick with 10 foot walls or taller. You aren't going to save a darned thing if you take a ten foot stick and cut it to nine. You may be pressing the budget, but what you build now will be standing for a long time. Long enough to regret not making it the way you want it.

You could go with with even taller walls and scissor trusses, but you would have to add a center post or two or go with laminated beams to make the span. All that would need to be engineered.

You need a plan. My plan was originally to build a 30x26, but I wound up starting with a center structure that was two stories tall and 20x26, to which I added a 10x26 shed addition later on one side , and a 22x26 shed addition to the other. I was able to afford the costs this way, spread out over time. The point is, I had a plan, and later when I started wondering what to do, I was able to go back to the plan and I did wind up doing everything according to the plans. I got all the space I needed for a nice second floor, and more first floor space in the end...

7 foot doors can cause regrets. Short ceilings cannot be undone. Everybody thought I was NUTS to want a 30x26, and that it was extravagant. It was not.

Figure out what you want/need, plan it, and Make It Work. It is always better to work it out on paper first. The BIG advantage to a pole barn with attic trusses is the simplicity and ease of construction, with a clear span ceiling on the first floor. Do that with 12 foot ceilings and attic trusses and you would never be sorry. Put off the concrete if you have to, but get the structure RIGHT !
 
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