Need help with truss bracing

[BX25HD]

I have started to build a pole barn. It is 40 x 56 with 10 walls. I got the first truss up and nailed to the eve wall post. I'm using my tractor with a boom attached to my pallet forks. The boom is a 4x6x20 that was twisted and I did not want to use it on the building. After I set the second truss (four foot on center) I couldn't safely walk between the trusses to nail some purlins on to brace the truss. This is what I did on my dad's house last fall, but his trusses were two foot on center, 28 wide, and only 8 off of the deck. So my question is what is the best and safest way to put the purlins on after setting the truss? Oh, the trusses are 40 wide with no overhand and 4:12 pitch.

 

[Daronspicher]

I've been considering the same issue for building about the same building, might go with 12' ceiling.

I have access to a "dump truck" (think f450 with a small dump bed). I believe that bed height to be about 5 feet high and think I could bolt down about 6 feet of scaffolding in the bed. Once the rafter is lifted into place, I hope I can drive along side the building to set the sides of the truss on each side, then back under in the center with about an 11 foot standing height between trusses.

On a 4/12 there should be about a 6 to 7 foot height from bottom to top of truss, or about 8 foot from top of scaffold to top of truss. A short step stool on top of scaffold should enable me to plumb up the truss and attach it to the previous trusses (temporarily until purlins are installed.

Having a platform like that should lend nicely to most roofing activities I think.

I am just talking ideas, it would be great to hear from people who have actually done it.

 

[BeezFun]

Put planks on top of the bottom chords so you can walk from truss to truss. Better to use 16' so you don't have to move it so much, drag it along as you go. Probably just need one in the center, you can walk on the headers at the wall end.

 

[dfkrug]

Put planks on top of the bottom chords so you can walk from truss to truss.

That's what I did.

I also used the tractor with boom pole on the FEL to set the trusses,
but also used scaffolding to secure them in place, shifting the
scaffolding along the floor as I went.

 

[Darrenone]

I stood on the side wall and nailed one on as high as I could reach. Then stood on that one to nail the next. Don't disconnect whatever it is you use to put it up there until you have enough supports in place. Also, after you put up a few, run a diagonal brace. Make sure you put enough diagonal braces as I have seen the trusses fall over with not much of a wind.

 

[ldwain]

The industry documents for truss bracing are found at this website: Building Component Safety Information. The BCSI booklet describes the required bracing for truss systems. Specifically, the B10 document describes bracing for post frame buildings. And yes, diagonal bracing is ALWAYS required in truss systems.

 

[BX25HD]

The industry documents for truss bracing are found at this website: Building Component Safety Information. The BCSI booklet describes the required bracing for truss systems. Specifically, the B10 document describes bracing for post frame buildings. And yes, diagonal bracing is ALWAYS required in truss systems.

I received this document with the trusses. I was asking how to get up on my trusses safely to do what this document requires.

Thanks to everyone for the advice. I hope to get back to this project soon. I've been working a lot of overtime. Great for the bank account but bad for getting work done on the farm. Thanks again!

 

[RxRatedZ71]

We used 2 sections of scaffolding to set my perlins on my 12' wall barn. We had a hard time on the two most top ones. I think we had a step ladder on top of the scaffolding in the end (not OSHA approved). If you have a slab floor just put casters on your scaffolds and roll it around.

 

[BeezFun]

The industry documents for truss bracing are found at this website: Building Component Safety Information. The BCSI booklet describes the required bracing for truss systems. Specifically, the B10 document describes bracing for post frame buildings. And yes, diagonal bracing is ALWAYS required in truss systems.

Great link, thanks

 

[Luremaker]

The industry documents for truss bracing are found at this website: Building Component Safety Information. The BCSI booklet describes the required bracing for truss systems. Specifically, the B10 document describes bracing for post frame buildings. And yes, diagonal bracing is ALWAYS required in truss systems.

Thanks for the link. Don't all truss manufacturers provide you with the bracing requirements for their trusses? When I built my shop the building inspector wanted the engineering certificate from the truss manufacturer along the bracing sheet. The bracing sheet listed all required braces including lumber grade and size along with the number of nails, size of nails and where each nail had to be placed in the braces. It left no room for errors.