Design tools

Estimate household direct and virtual water use, then see where a rainwater tank cuts the load.

Monthly water-balance sizing from live BOM rainfall, roof catchment and demand.

Rational Method (Q = C × I × A) peak discharge from live BOM IFD intensity, with relevant GRAF drainage and detention systems.

Convert cylinder or rectangular tank dimensions to litres and match GRAF capacity bands.

Hazen-Williams head loss through PE rising mains for system design.

Wet-well volume, duty head, ranked pumps and accessories for stormwater and wastewater stations.

Convert pump pressure in kilopascals to metres of head, or reverse for duty checks.

On-site detention volume, SSR and orifice sizing for council stormwater controls.

Catchment-to-pipe network sizing with Manning flow checks.

Rain gardens, bioretention, swales, infiltration and underground detention in one toolkit.

Surface and sports drainage product finders for RECYFIX, KERBFIX, DRAINFIX and SPORTFIX ranges.