Retaining Walls Across Perth

Kalamunda

6076

Kalamunda extends across the Darling Scarp, where moderately steep to very steep slopes, shallow duplex soils and granite outcrops make retaining-wall and drainage design important.

Lesmurdie

6076

Lesmurdie straddles the Darling Scarp with steep hillsides, shallow yellow-brown duplex soils, granite outcrops and elevated blocks overlooking the coastal plain.

Roleystone

6111

Roleystone is a leafy Perth Hills suburb on the Darling Scarp with undulating-to-steep terrain and steep-sided Canning River valleys where retaining and stormwater control matter.

Mundaring

6073

Mundaring sits in the Perth Hills beyond the Darling Scarp ascent, with undulating plateau terrain and locally variable rock, gravel and drainage conditions.

Darlington

6070

Darlington occupies the Darling Scarp and is dissected by Nyaania Creek, creating sloping and valley-side sites where rock, runoff and retaining loads need lot-specific assessment.

Armadale

6112

Armadale spans the foothill edge of the Swan Coastal Plain near the Darling Scarp, with terrain transitioning from flatter urban land to rising, more sloping ground toward the east.

Kelmscott

6111

Kelmscott sits at the base of the Darling Scarp and rises markedly to the east, with foothill sites crossing Ridge Hill Shelf and Darling Scarp soil landscapes.

Byford

6122

Byford changes from steep Darling Range foothills in the east to relatively flat, seasonally waterlogged plain to the west, with variable colluvium, clay and Bassendean sand.

Forrestfield

6058

Forrestfield lies on the Swan Coastal Plain below the scarp, with mapped Forrestfield and Guildford soils and local elevation change toward the hills.

High Wycombe

6057

High Wycombe sits at the base of the Darling Scarp and ranges from about 14 to 117 metres elevation, so block gradients vary substantially across the suburb.

Scarborough

6019

Scarborough is a coastal suburb whose foreshore comprises shore-parallel Quindalup sand ridges over older Spearwood dunes, making loose sand and dune slopes relevant to retaining design.

City Beach

6015

City Beach occupies a coastal dune landscape of Spearwood sands and Tamala limestone, so sandy excavation, limestone and changing dune levels affect retaining-wall design.

Cottesloe

6011

Cottesloe lies on sandy Spearwood and Quindalup coastal landforms, with yellow-to-brown sand over limestone and local limestone exposure.

Mount Hawthorn

6016

Mount Hawthorn is an established inner suburb with elevations of roughly 9 to 62 metres, so individual blocks can have meaningful level changes despite the urban setting.

Leederville

6007

Leederville is a densely developed inner-city suburb centred on Oxford and Vincent Streets, where retaining-wall needs are best assessed lot by lot from existing levels, fill and drainage.