panel load spec for eastern-edge exposure
Grain Valley catches prairie gusts from the east with nothing in the way. On any west-facing, south-facing, or exposed lot, we tighten post spacing to 7-foot on-center (instead of 8), upsize to 6x6 posts where exposure is extreme, and use galvanized ring-shank nails for pull-out resistance. This is the difference between a fence still standing at year five and one leaning at year three.