Design and construction of a new grain retaining wall system to an existing facility, in challenging site conditions. The existing building was built on uncontrolled fill, with uncompacted, soft and wet soils beneath. QDC’s unique design overcame these challenges and provided a cost-effective solution. It was all installed under the roof with extremely limited head room and working area, between overhead powerlines and during some heavy rainfall (to the delight of local farmers). Stage 1 was completed one month early, and free of injury.