Guides
The questions engineers, project managers and owners ask before a wall is priced, answered plainly by people who build them. Each guide opens with the short answer.
Which retaining wall system is right for the site?
How to choose between crib block, segmental block, concrete sleeper, gabion and Keymass retaining walls for a Sydney site.
Retaining wall height, engineering and approval in NSW
When a retaining wall in NSW needs council approval, engineering and certification.
Drainage behind retaining walls: why walls fail and how ours do not
Water pressure is the most common reason retaining walls fail.
Geogrid and reinforced soil: how a block wall gets tall
How geogrid turns the soil behind a segmental block wall into part of the structure, when it is needed, and what it means for excavation, backfill and programme..
Crib walls versus segmental block walls
Crib block and segmental block walls compared.
Retaining wall certification: what it covers and what you receive
What certification of a retaining wall involves in NSW.
Batter, setback and wall facing explained
What batter and setback mean on a retaining wall, why walls lean into the bank, and how batter differs between crib, segmental, Keymass, gabion and rock walls..
What actually drives the cost of a retaining wall
The factors that drive the price of a retaining wall in Sydney.
Gabions, rock mattresses and rip rap for scour protection
How gabion walls, rock mattresses, rock blankets and rip rap protect creek banks, channels and outlets from scour and flood damage, and how the rock and mesh are specified..
