Step By Step Guide To Building A Pole Barn
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Bracing For Post Frame Buildings
Building A Pole Building
High wind zones requires more uplift protection than indicated above.
Treated uplift cleats are replaced with #4 rebar and a concrete collar 4-6″ above the rebar is used to combat 120 mph and higher winds. Larger buildings and taller walls in Exposure C classifications may require filling the hole with concrete and embedment deeper than 4′.
For 90 mph 3 second wind gust and below, the rebar is replaced with (2) 12″ 2×6 treated uplift cleats, the concrete collar is not required, and the backfill is simply well compacted dirt.
Wall Corner Braces
Corner bracing was not included in the infographic above but they are a good idea for walls 12′ and higher. We provide corner braces in all building packages but they aren’t really necessary for 8′ – 10′ walls in low wind areas.
Corner braces are nailed at each post, and at each brace to girt location.
Truss Sway Bracing
Many truss drawings specify continuous web bracing as part of construction to support the truss design they provide.
Sway bracing is important for structures with large openings, long lengths, and for areas with high winds. Sway bracing, purlins, lateral bracing, and web bracing should be of similar material, typically #2 2×4 dimensional lumber.
QUICKIE STEP BY STEP
1. elevated building pad size extends 3' beyond building all sides 2. inset corner posts 1 1/2" to provide room for wall girts 3. embed corner posts - temp. bracing 4. embed remaining posts - temp bracing 5. establish grade. nail skirt board around perimeter beginning at corner post with highest grade 6. from grade mark building wall height on eave posts 7. fasten truss supports where marked extending corner supports 1 1/2" beyond corner posts 8. fasten wall girts per building plan 9. fasten opening headers per building plan 10. mark purlin locations on top chord of trusses per plan 11. mark lateral bracing locations on bottom chord of trusses per plan 12. mark ridge purlin location to fit ridge cap 13. fasten stub posts to truss supports per plan 14. Ref BCSI-B10 truss bracing docs,fasten trusses to posts & stub posts, bracing as construction is completed 15. install lateral bracing, sway bracing, purlins per plan 16. install blocking or fascia board (if overhang) to end of truss tails 17. fasten eave trim 18. install metal roofing 19. fasten gable trim 20. install ridge cap 21. fasten rat guard to skirt board 22. fasten overhang trim to truss support (if overhang) 23. fasten soffit and angle trim (if overhang) 24. install siding 25. install wall corner trim