놀이터 경계 콘크리트 계산기 — 얼마나 필요할까요?

놀이터 경계 콘크리트 가이드

Playground edging footings are typically 4 inches wide × 4 inches deep — just enough to anchor timber or plastic edging. Use 3,000 PSI concrete. A 50-ft perimeter at 4×4 in uses about 0.25 cubic yards. Larger border footings for equipment anchors may need 12-in diameter × 24-in deep post holes.