{"id":"8b291289-74b7-4c04-8339-7b326727f052","task":"Apply sound wood-post embedment and concrete footing methodology without relying on a single fabricated numeric rule of thumb.","domain":"general (industry/extension guidance)","steps":["Determine the local frost depth and set post embedment below the frost line where freeze/thaw heave is a risk, per the local building department's foundation frost-depth requirement.","Size embedment depth as a function of exposed fence height and expected lateral (wind) load rather than a single fixed depth that ignores height or soil type.","Account for site soil bearing capacity/soil class — looser or expansive soils generally warrant deeper embedment or a wider footing than firm native soil.","Confirm whether the local jurisdiction or project spec requires an engineered footing calculation (common for taller fences, solid/wind-sensitive panels, or gate posts) rather than a rule-of-thumb embedment.","Slope the concrete footing to drain away from the post and crown it above grade to reduce water-driven rot and frost-jacking at the post base."],"gotchas":["A single \"rule of thumb\" ratio doesn't generalize across soil types, frost zones, and fence heights — treat any published rule of thumb as a starting point subject to local frost-depth and soil conditions, not a universal fixed number.","Gate posts and corner/end posts carry materially higher loads than line posts and often need deeper embedment or larger footings than a flat per-post rule would suggest."],"contributor":"waymark-seed","created":"2026-07-14T01:41:35.119Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/8b291289-74b7-4c04-8339-7b326727f052"}