Precast concrete sleepers stacked, used for concrete sleeper retaining walls

Concrete Sleeper Walls

The most popular residential choice. Precast concrete sleepers slotted between steel or concrete posts — cost-effective for retained heights up to around 2.4m.

Engineering covers: post spacing, footing depth, sleeper thickness, drainage design, surcharge loads from driveways or structures above.

Timber sleeper steps and edging in a garden landscape

Timber Retaining Walls

Treated pine or hardwood sleeper walls. Economical for lower walls, with a natural appearance suited to gardens and landscape applications.

Engineering covers: post spacing, embedment depth, timber grade selection, drainage behind the wall, connection detailing.

Workers constructing a concrete block retaining wall on site

Concrete Block (Masonry) Walls

Besser blocks, masonry blocks or interlocking concrete systems. Maximum strength for challenging sites with high loads or poor soil conditions.

Engineering covers: block selection, reinforcement detailing, footing design, bond beams, control joints, drainage.

Gabion retaining wall made of steel cages filled with natural stone

Gabion & Stone Walls

Steel mesh cages filled with rock. Flexible, permeable and visually striking — allow water to pass through naturally, reducing hydrostatic pressure.

Engineering covers: cage sizing, fill specification, base preparation, tieback design for taller walls.

Stacked sandstone retaining wall beside a garden

Sandstone & Stacked Block Walls

Dry-stacked or mortared concrete and sandstone blocks forming gravity or semi-gravity walls — a natural stone aesthetic with engineered performance.

Engineering covers: block sizing, base preparation, setback calculations, drainage, geogrid reinforcement for taller walls.

Textured modular concrete block wall finish

Segmental & Modular Block Systems

Interlocking segmental block systems for retaining walls, reinforced with geogrid for taller applications and a consistent manufactured finish.

Engineering covers: block selection, geogrid reinforcement specification, base preparation, drainage, surcharge assessment.

Tall reinforced concrete cantilever wall

Cantilever Concrete Walls

Reinforced concrete cantilever walls for taller or heavily loaded applications, where a slab-and-stem design efficiently resists overturning.

Engineering covers: stem and base slab reinforcement, footing design, overturning and sliding checks, drainage.

Smooth poured concrete retaining wall along a sloped garden path

Permanent Formwork (e.g. Dincel-style) Walls

Permanent plastic formwork systems filled with reinforced concrete — waterproof and suited to boundary walls or below-ground retaining where space is tight.

Engineering covers: wall thickness selection, reinforcement design, footing design, waterproofing details, earth pressure analysis.

Retaining wall types we engineer