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Reply by Jon Hobbs

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Posted on lowering my shop ceiling

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Jon Hobbs

147 posts in 1621 days


#1 posted 02-07-2018 07:20 PM


Regarding posts in the shop, the current roof trussed span the width of the shop (40 ) without any posts, and are every 2 feed on center.
...
I was hoping to get away with not having the post, but sounds like that s not in the cards.
—-Colorado1—-

If your roof trusses can span 40 feet with no posts, floor trusses should be able to be engineered to span 40 feet with no posts:

https://www.menards.com/main/e-trussDesigner.html

Since you’re looking to use the space above the new ceiling for storage, floor trusses seem like a good option. It looks like you’ll need trusses that are 24” deep and 12” on center. That’ll eat up a good portion of your “attic” space, but you’ll avoid having posts.

Here’s another resource:

https://www.selecttrusses.com/span-chart/

-- Jon -- Just a Minnesota kid hanging out in Kansas


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