Amish Crafted Custom Pole Barns
Building Education Guide

Pole Barn Truss Types & Roof Engineering

Selecting the right engineered roof truss for your post-frame building in Ohio. Explore clear spans, pitches, load ratings, and interior ceiling configurations.

Ohio Code Engineered

All JT Pole Barn trusses are computer-designed and stamped for your specific Ohio county snow, ice, and wind load requirements.

Clear-Span Flexibility

Trusses span up to 80 feet clear without interior load-bearing walls or posts, leaving 100% of your floor space open.

Precision Framing

Framed with high-grade lumber and heavy steel gusset plates, set and secured on 4-foot or 8-foot centers by our Amish framing crews.

Common Pole Barn Roof Truss Configurations

Each truss profile offers distinct advantages for interior clearance, roof pitch, loft space, and budget.

3:12 to 6:12 standard • 20' – 80' clear span

Standard Common (Fink) Truss

The most popular, cost-effective roof truss for post-frame garages, storage barns, and farm buildings. Features triangular webbing that distributes roof loads evenly across outer laminated columns without requiring interior load-bearing walls.

Best Application: Storage barns, machinery sheds, standard 2, 3 & 4 car garages

Key Highlights

  • Maximum strength-to-cost ratio
  • Engineered for Ohio snow/wind load codes
  • Supports insulation and metal ceiling liner panels
Vaulted interior ceiling (e.g. 6:12 exterior / 3:12 interior pitch) • 24' – 60' clear span

Vaulted / Scissor Truss

Provides a dramatically vaulted interior ceiling without raising the exterior eave height. Excellent for vehicle lifts, tall RV storage, or spacious barndominium great rooms.

Best Application: Auto repair workshops with car lifts, barndominium living areas, equestrian riding arenas

Key Highlights

  • Adds 3' to 6' of center ceiling height
  • Clean architectural look inside
  • Allows high overhead garage doors
6:12 to 8:12 pitch recommended • 24' – 48' span

Attic / Bonus Room Truss

Engineered with a open rectangular center section that creates a full second-floor room or loft above your main floor. Floor joists are built into the bottom chord to carry living or storage loads.

Best Application: Two-story garage workshops, barndominium guest quarters, upper loft storage

Key Highlights

  • Doubles usable floor space under one roof
  • Includes engineered floor load ratings
  • Allows full staircase or drop-down ladder access
Dual pitch (steep lower / shallow upper) • 24' – 40' span

Gambrel / Dutch Barn Truss

Traditional Dutch barn aesthetic with dual roof slopes that maximize upper loft capacity and deliver classic country craftsmanship appeal.

Best Application: Equestrian barns, traditional livestock shelters, rustic homestead workshops

Key Highlights

  • Maximum upper level head room
  • Classic Amish timber-frame heritage look
  • Complements rural Ohio farmsteads

Need Help Selecting Your Building's Truss Design?

Our post-frame specialists will help you choose the right roof pitch and truss spacing for your specific building dimensions and intended use.