RETAINING WALL EXCAVATION — GOLD COAST & BRISBANE

Retaining wall excavation needs careful attention to the engineering: trench width, depth, footing dimensions and batter angles. We work to the supplied plans.

We dig retaining wall trenches and batter cuts to engineer's drawings, every time. Sleeper walls (timber, concrete sleepers, steel posts) typically need a 600mm wide × 600mm deep post footing trench. Block walls (besser, masonry) need a wider strip footing — usually 800mm wide × 400–600mm deep. Crib walls and reinforced concrete walls need bigger again.

Batter cuts behind retaining walls are critical and often skipped by less experienced operators. The batter angle (typically 30–45°) lets the wall installer get the full wall built without the bank collapsing into the trench mid-job. We cut the batter to the engineer's angle, install temporary sediment fencing, and protect the cut from rain until the wall goes in.

We build retaining walls up to 1 metre ourselves. Taller engineered walls over 1 metre are done in coordination with retaining wall builders we work with regularly across the Gold Coast — Tallai sloping blocks, Mudgeeraba acreage cuts, Currumbin Valley split-level houses, Pimpama and Coomera new estate retaining walls — where we dig, they build, and you get a clean handover.

Cost varies with wall length, height, ground conditions and access. We quote the excavation after a site visit so we can assess access, soil and rock.