Pole barn roof question

[mfairbank]

Can you put the rafters 4' O.C. and use 2x4's flat?

That was my original plan but half of the trusses would just be free floating sitting on just a header and not being supported by the posts so i went this way to save money on not buying more trusses and more bolts to support them trusses but now i have to spend money on 2x6s instead of 2x4's and now i have to buy purlin hangars. so probably didn't save me any money in the long run.....but maybe it did since how trusses are about 100 dollars a piece

 

[Duffster]

Yea im sure the hangars are a real PIA but they shouldn't get in the way of the roof steel.

Saddle hangers do. Trust me. Been there and done that.

would it be as strong as the hangars??

Some argue stronger.

Why such a random spacing? Even with the random spacing you only need 2x6 where it is over 8-9'. You could hanger those and use 2x4 where it is only 8' and then hanger or ledger those.

Some would even go 2x4 up to 10' but I wouldn't reccomend that when setting the purlins in between the trusses.

 

[mfairbank]

Saddle hangers do. Trust me. Been there and done that.



Some argue stronger.

Why such a random spacing? Even with the random spacing you only need 2x6 where it is over 8-9'. You could hanger those and use 2x4 where it is only 8' and then hanger or ledger those.

well the random spacing comes with haveing 2- 12' door openings on the eve side so the first spacing is 5' then 12.6' then 3' then 12.6' then 8.6' then 8.6' oc. So i guess on the 5', 3', and the 2- 8.6' spacing i could use 2x4's on edge with that ledger board. Would that be enough strength for the roof?

 

[mfairbank]

Your talking about putting all the 2x4's and 2x6's on edge right??

 

[Duffster]

well the random spacing comes with haveing 2- 12' door openings on the eve side so the first spacing is 5' then 12.6' then 3' then 12.6' then 8.6' then 8.6' oc. So i guess on the 5', 3', and the 2- 8.6' spacing i could use 2x4's on edge with that ledger board. Would that be enough strength for the roof?

Absolutely.

Your talking about putting all the 2x4's and 2x6's on edge right??

Yes.

 

[mfairbank]

Absolutely.



Yes.

alright that sounds good and that should save me some money on the purlins....and hangars. Just courious how do you know all this...are you a contractor or just a expericed pole barn builder?? This is my first barn it has been pretty much fun this entire time. I was going to have someone do it myself but everyone i called wanted to charge me around 25 to 30,000 to build this barn. But all said and done should cost me around 16,000, pretty good savings doing it myself i would say!

 

[Duffster]

...are you a contractor or just a expericed pole barn builder??

Both.

 

[Rowdy Raven]

I just finished building mine and had kind of the same problem. Instead of putting 2x6s on edge I put on rough cut 4x4s. This gave me the strength to bridge between the trusses and a good wide edge to screw the metal into. I lapjointed the edges where they met along the course of the lateral run. Worked very well and I am able to walk on the roof easily.

 

[blueriver]

That was my original plan but half of the trusses would just be free floating sitting on just a header and not being supported by the posts so i went this way to save money on not buying more trusses and more bolts to support them trusses but now i have to spend money on 2x6s instead of 2x4's and now i have to buy purlin hangars. so probably didn't save me any money in the long run.....but maybe it did since how trusses are about 100 dollars a piece

Nail a stub pole or 2x6 to the top plate to fasten the rafter to ... if your worried about support put a plate on the inside just like the outside.

Don't know about the Cost difference... the darn hangers and long 2x6's are going to take up some time ...

 

[blueriver]

When I built mine I put a stub 2x4 ..