Fence Post Footing Detail

Recommended wood fence post foundation details h height of fence above grade feet s spacing of fence posts center to center feet b diameter of round concrete pier hole or dimension of square pier inches d required depth of concrete pier feet and inches p post size wood nominal inches foundation post type and size b 12.

Fence post footing detail.

The footing should contain reinforcement steel and starter bars. The bottom of the l is to sit under the load to pull the wall against the lateral forces. Recommended steel fence post foundation details h height of fence above grade feet s spacing of fence posts center to center feet b diameter of round concrete pier hole or dimension of square pier inches d required depth of concrete pier feet and inches p post size galvanized steel schedule 40 outside diameter od inches center to galvanized steel post. But surprisingly even digging holes and filling them with concrete is fraught with difficulties.

The starter bars should protrude out of the concrete at spacings roughly 1m or equal to the holes in the blocks. Setting fence posts so that they re plumb and evenly spaced is part of the challenge. For example an 1800mm fence in wind zone a will require footings of a minimum of 600mm deep by 200mm wide whereas the footing dimensions for the same fence in wind zone d will need to be at least 700 1100mm deep by250mm wide. You might consider the job done but to further safeguard the fence post against rot.

Do apply caulk to each fence post after only an hour cts rapid set concrete mix will have hardened completely. Caulk around the fence post base apply high quality exterior acrylic latex caulk or silicone specifically designed to adhere to concrete at the base of the post. The problem begins with the shape the holes normally take.