I've got a 24 x 32 pole building with storage trusses spaced 8' OC. I need to install 2 x 4 joists 24" OC perpendicular to the trusses. I want to install a metal ceiling, use blown in insulation, and have the joists covered in plywood for storage. I'm considering installing the 2 x 4 joists flush with the bottom of the trusses, which are either 2x6 or 2x8. This sets me up good for the ceiling install. However, doing it this way I won't have a flat floor for storage above. The extra height of the trusses would break up the flat floor. I guess I could always buy joists that are the same width as the trusses but that would be overkill and much more expensive. What is the best way to go about handling this situation? Would appreciate your thoughts.
Pole builidng ceiling question
- Thread starter Sigo
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Leaflessshadetree
Well-known member
Are your trusses designed to support a floor? 24ft is a wide span for 2x8 joists.
I can't think of any situation where I'd even think about using 2x4s for floor joists.
I can't think of any situation where I'd even think about using 2x4s for floor joists.
bandaidmd
Well-known member
I have never seen a pole barn with 8' between trusses, are you sure that "any storage" is permitted with that set up.
I just put a ceiling up in my 24x32 -4ft OC using what they call liner metal (same gauge as walls but thinner paint) and it holds insulation just fine.
I just put a ceiling up in my 24x32 -4ft OC using what they call liner metal (same gauge as walls but thinner paint) and it holds insulation just fine.
Mine is 24' x 40' with trusses 8' OC. It is very common. All the pole barn kits that Menards sell have trusses designed for up to 9' OC.
That being said, no way it will support a floor.
Ed
csp
Well-known member
It's not common for storage, or attic, trusses to be spaced 8' OC.
Regular or scissor trusses, sure but not the type the OP has.
Well, the designs call for 2x4 joists, 24" OC between the trusses which are 8' OC. So joists connected perpendicular to the trusses. It is a Wick building and I've got a copy of all the design and engineering diagrams. The real question is:
How best to lay out the floor joists while planning for a metal ceiling to go below the truss.
How best to lay out the floor joists while planning for a metal ceiling to go below the truss.
csp
Well-known member
Your engineered drawings should have the layout of these 2x4 joists specified. They are smaller height-wise than the trusses (2x4 vs 2x6 or 2x8) and since you say it's a storage truss I'm assuming that they will be mounted flush to the top face of the bottom chord of the truss so that plywood will attach to both the joist and truss. This means that you won't be attaching ceiling to the bottom of the joists as a result anyhow. Again, just assuming since that info hasn't been provided.
If it were mine I would attach 1x4s to the bottom of the trusses on 24" centers perpendicular to the trusses. This is what you would attach the metal to. Make it 16" on center if necessary depending on the width of the metal panels you're using.
If it were mine I would attach 1x4s to the bottom of the trusses on 24" centers perpendicular to the trusses. This is what you would attach the metal to. Make it 16" on center if necessary depending on the width of the metal panels you're using.
rburke65
Well-known member
Trusses 8' OC is very common. I got a bid on a pole building and they were going to put trusses 10' on center. I voted "no". But if the OP has plans that say "storage trusses" ...hey, do it.
