Designing a building right now and metal will be a big cost. Curious where you guys are getting it? I will likely use 26ga PBRs with Kynar 500 or similar 40-50yr finish.
Also, I should add that I am an engineer and designing a tough building in that I want a large free span. Still pending some numbers here but will somewhere around a 5ply 2x8 post on 12ft center with tripled up roof trusses on 12ft centers. Purlins and gerts will be flush mounted with hangers to get maximum stiffness in all directions. Hard to deny the performance improvement mounting this way and I can add all the hangers on the ground.
For the poles, I will use treated and laminate via poly glue and screw, creosote or other coating on the part in the ground, 4ft deep, 18-24" holes on bed of gravel and creted in. I would like to add some uplift locks but not yet sure how I want to do that and not real sure they will be needed. Will have a concrete floor as well which will pour over the pole piers so that should lock them down.
Thoughts?
The roof trusses will take a LOT of engineering as they will be a 72ft free span scissor. They will have to have plywood solid centers. Build these onsite. Jig will take a minute to build.
Also, I should add that I am an engineer and designing a tough building in that I want a large free span. Still pending some numbers here but will somewhere around a 5ply 2x8 post on 12ft center with tripled up roof trusses on 12ft centers. Purlins and gerts will be flush mounted with hangers to get maximum stiffness in all directions. Hard to deny the performance improvement mounting this way and I can add all the hangers on the ground.
For the poles, I will use treated and laminate via poly glue and screw, creosote or other coating on the part in the ground, 4ft deep, 18-24" holes on bed of gravel and creted in. I would like to add some uplift locks but not yet sure how I want to do that and not real sure they will be needed. Will have a concrete floor as well which will pour over the pole piers so that should lock them down.
Thoughts?
The roof trusses will take a LOT of engineering as they will be a 72ft free span scissor. They will have to have plywood solid centers. Build these onsite. Jig will take a minute to build.