How To Square A Pole Barn - With Picture

Squaring Pole Barn with Mason Lines & Batter Boards
How To Square A Pole Barn - Use batter boards and mason lines to make the outline of the building dimensions. Mason lines should be about 12″ above grade.

Posts are set 1 1/2″ within the particular building dimension to leave space for the girts that are nailed to the outside perimeter of the posts (unless your construction technique can incorporate shelf girts). therefore once setting the mason lines for a 30×40 dimension the post can truly be set 1 1/2″ within that dimension.

After the basic outline is created you need to get everything square. you can square corners using the 6-8-10 technique shown below.
To make sure the complete building is square the diagonal measure of the building footprint ought to be a similar when measured from corner to corner as illustrated below.

Note that post spacing is measured from center to center of post except on the ends. Corner measurements are from corner of post to center of post. The post spacing on the corner is 7′ 10 1/2″ to create space for the girts as mentioned above.

Set and plumb corner posts 1st. Then set every intermediate post keeping the post plumb and aligned with mason lines.

Sample Post Layout For Pole Barns

Post Orientation

You can’t fail with a 6×6 post however the orientation of 4×6 and laminated posts are shown below. The narrow aspect of the 4×6 is that the girt nailing surface. The laminated post orientation is apparent in the drawing.

Pole Barn Post Orientation
All posts rest on a concrete footing. For smaller buildings a pre-cast footer is used. Larger structures would require multiple baggage of sakcrete or pre-mixed concrete to the required depth.

Uplift Protection
Posts should have uplift cleats or rebar for uplift protection. If the backfill is dirt use treated uplift cleats. for high wind areas requiring a concrete collar use rebar.

How Deep to line Pole Barn Posts
Embedment depth depends on variety of things including three second wind gust, wall height and length, and soil bearing capacity. for little short buildings a minimum of 3′ 6″ of embedment and the depth of the footer is needed. A full 4′ of post depth is most well-liked. In high wind areas concrete collars are accustomed prevent uplift and post depth of up to 6′ are often needed.

Result Example

Post Bracing & Backfill

Use 2×4’s to brace your posts in place. Backfill with dirt tamping and compacting as you go.
Recheck alignment adjusting as necessary to keep plumb. Posts will settle and shift if not properly compacted throughout backfill procedure.

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