Oberon Multi-Residential – Installation Of Stormwater Diversion Chanel Using Concrete Sleeper Retaining Wall
These 6 x strata units were built in the mid 1980’s on undulating ground and near to the bottom of a natural drainage culvert.
The multi-unit residences were being inundated with stormwater when a storm event of any magnitude took place due to the poor design of the earthworks and the topography of the building surrounds.
Solve Civil was contacted to assist with a solution that was designed to channel water from a storm event around the bottom 2 residential units and out to the street. The walls were constructed around 2 stormwater surge grates where water could discharge and run through the channel formed by 2 walls 2500mm apart with a 3% fall to the road drainage system.
The retaining wall system selected was smooth finish Canberra Concrete charcoal sleepers with galvanised steel I beams.
- Canberra Concrete Sleepers – smooth charcoal finish
- Very narrow working area between boundary and residence construction
- Top 3 courses needed to be sealed to prevent water flow through the concrete sleepers
- 10mm Metal & Ag drain behind all areas
- Hand work required to install posts, sleepers, ag drain & backfill
