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Pole barn truss spacing?

locomike

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Nov 16, 2007
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149
Looking at Menards pole barn kits. Surprised a lot of them have their truss spacing at 8ft. and 9ft. oc's. Is this standard practice and spacing.
 
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Jimmy_B

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Dec 24, 2011
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..........
I got about 8 different bids before building my 36' x 56'. 8' spacing was what they all had. Out minimum snow load here is 35#. Mine's built at 50#, still with the 8' spacing and rated for a 10#/square foot ceiling.
 
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tomroblee

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Jan 11, 2006
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Indiapolis, IN
What is normal for truss spacing depends on how you intend to finish the inside of the building, if at all. The wider the trusses are spaced, the beefier they need to be. The wider the trusses are spaced, the beefier the purlins need to be as well.

If you are not going to put a flat ceiling in the building, 8 foot spacing should be fine. If you are going to put in a metal ceiling, you will want the spacing to be 4 foot or less. For drywall ceilings, the trusses need to be spaced at 2' unless the drywall is going to be attached to strapping that runs perpendicular to the trusses.

When I had my 36' x 48' barn built, I had it priced with various truss spacing. The cost was virtually the same for 4' or 8' spacing. 2' spacing was somewhat more expensive.
 
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locomike

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Nov 16, 2007
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Yeah it will be metal roof. No finishing inside roof except probably some Perma R 4x8 insulation panels so probably run some furring striPs for that. Thought I read where would be better to run 2x4 purlins on edge on top of trusses?
24x24 is probably what I will build. Trying see if I can do it on small budget. Any ideas what concrete would run for 24x24? Southeastern Ohio. I would have to pay to excavate/level small area and concrete. I should be able to handle the build and all electrical.
 

rburke65

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Nov 10, 2007
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Canfield, Ohio
Well 24x24 is 576 sq. foot and you get 80 sq. ft. to the yard of concrete and the answer is......7.2 yards or 8 to be sure. So, what ever the cost per yard in your area. Don't forget welded wire mesh, or rebar, vapor barrier, finishers, sealers,etc....and yes the economy pole buildings are trusses 8' on center. He'll I was just given a bid with trusses 10' on center......."no thanks". That seemed entirely too far in my opinion. Go and price trusses every 4 and every 2 foot just to be sure. It may only be a small amount to reduce the truss span. Good luck.
 
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locomike

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Nov 16, 2007
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Thx brother. What is the average cost per yard? I've never proved it ever. So with the trusses 8ft. oc I can go with like 9 ft. ceiling height and still use a hoist as I can place it in between trusses? Appreciate the input gentlemen!
 

tomroblee

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Indiapolis, IN
I'm not sure I understand your comment about using a hoist.

If your trusses are 8' on center, you will have an space nearly 8' wide between the trusses. Assuming that you don't install a flat ceiling on the bottom cord of the trusses, you will have additional "working height/space" between the trusses. (If you do want to install a ceiling, make sure that the trusses are rated to support the weight of the ceiling.)

You can use a hoist anywhere you have the room----assuming that you have some way to support the hoist. You can't just attach the hoist to the roof purlins, the trusses, or some other board that you add to span the distance between two trusses.
 

pauldeere

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Jan 25, 2011
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I have a 40' X 50' with 12' side walls. It has a insulated roof with metal sheeting. The trusses are 2" x 6" on 4' centers.
 
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wedge40

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Oct 31, 2009
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Bloomington, IN
To go from 8' OC to 4' OC you're adding three trusses. Lets say $90.00/truss, that's $360.00 bucks. The extra trusses will make putting a ceiling up sooo much easier. Are you going to work in the garage? Putting up a whilt metal ceiling is the cheapest and easiest thing to do.

Wedge
 
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toyoguy81

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Dec 16, 2013
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Missouri
HD FLHX's building is a Morton pole barn, no footers, they dig holes and sink the laminated 2x's into ground below frost line
 

garagebuilder

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Sep 18, 2010
Messages
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Location
Dansville NY
There are two way to frame a roof. I call them classic and modern frames. Classic is truss carriers and 4 foot centers. Modern frame is no truss carriers with all trusses setting on poles with 8 foot center.

The modern frame has less material in it and is faster to build. Half as many trusses and no truss carriers means material and labor savings. Yes it is common especially for "branded" buildings with engineering departments for the design.

Old school independent builders build the zhit out of them with truss carriers and 4 foot centers as standard practice in many areas of the USA.
 

NHBandit

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Jan 11, 2012
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East Tennessee
My pole barn built by National Barn Company has them spaced at 5' apart. Posts are 10'
 

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jomobco

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Nov 12, 2010
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Denver, CO
If you are not going to put a flat ceiling in the building, 8 foot spacing should be fine. If you are going to put in a metal ceiling, you will want the spacing to be 4 foot or less. For drywall ceilings, the trusses need to be spaced at 2' unless the drywall is going to be attached to strapping that runs perpendicular to the trusses.

I've got 8' on center with a skinned metal interior and blown in above it. 8' works just fine.
 
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