A complete design-and-construct of a graduated trash-rack stormwater treatment system — from RPEQ-certified engineering design through to constructed asset. Renew coordinated the design; QEST-style civil delivery executed the build.
Rigorous QA underpinned every stage: subbase density (compaction) testing, concrete strength and thickness testing, non-destructive concrete scanning to verify reinforcement, and staged trash-rack inspections — all documented and RPEQ-signed.
A custom Ecosol GPT 4450 was found with major damage to its internal steel filtration screens — the result of a non-standard design and poor installation. Inlet and outlet pipes sat at base-slab level (rather than ~900 mm above), starving the unit of bypass and blowing out the steel internals under hydraulic load. A mass concrete pour had blocked maintenance access, and access covers sat non-compliant in a pedestrian footpath — an OH&S hazard.
Renew isolated and rebuilt the asset to a compliant, serviceable standard.
Site isolated with temporary fencing and pedestrian diversion; footpath and mass concrete pour demolished down to the cover slab; slab lifted to expose the blown-out steel internals.
Vacuum-cleaned and stripped; steel internals workshop-refurbished with extra vertical supports, new oyster-mesh screens, structural weirs to direct low flows, and reinforcing angles against hydraulic blow-out.
Internals re-secured with Trubolts, penetrations rendered and sealed, cover slab and concrete risers recast, genuine Ecosol cast-iron covers & frames fitted, footpath and turf reinstated.