Pole Barn Roof Truss Spacing

These are typically spaced at certain intervals to provide the necessary support for the roof.

Pole barn roof truss spacing.

Large span trusses require multiple pickup points using a spreader bar on the crane. A truss is the rigid framework of wooden members designed to support a roof. Attic trusses are great for living space or storage space. A roof truss is a structural framework usually made from wood that bridges the space between the ceiling of the top level and the roof structure.

Designing roof trusses for proper placement on post frame buildings. As we noted a pole barn is a performance based building and the truss is just one component. Truss manufacturers explicitly limit their liability on truss bracing requirements appropriateness of design loads connection of the truss to the post column and the design of the walls and framing needed to support the roof system. I am building a 48 ft pole barn with 1 ft overhangs on the gable ends.

Hundreds of thousands of pole barns are in use today with trusses spaced every 12 feet or even more. What is a pole barn truss. Trusses can be constructed with smaller sized lumber than rafters and often their cost is not significantly higher than normal rafters. I am going to space the purlins 2 ft oc from ridge to soffit.

They are easily damaged when laying on their side. Pole barn roof truss spacing generally tens to operate according to similar spacing principles though there are some proponents of having higher pole barn roof truss spacing. Truss spacing will be 2 ft oc with the snow load here in maine. Trusses 2 o c trusses can also be set 4 o c for steeper roof pitch appeal but eliminating attic storage and flooring building 1 and building 2 building 3 for similar attic area pics.

Roof trusses are engineered to be strong in plane with the roofing on the top chord. Use of manufactured roof trusses can dramatically cut labor costs when framing a gable roof compared to building rafters. The practicality cost effectiveness and ease of construction of pole buildings is based upon efficient use of the fewest amount of materials to do the most work within safe engineering design. For example you might use a 35 spreader bar on a 70 span truss.

Clear span 4 12 pitch wood trusses 2x4 lateral and z truss bracing with simpson truss anchors truss spacing roof purlins and roof sheathing is listed below with the roofing finish options. Nails trim basic plans.