Griffith University Testing

Several organisation were contracted to undertake scientific testing of STAYturf. Dr. Keppel Coughlan from the Faculty of Environmental Sciences at Griffith University was engaged to supervise and report on the test results.

Summary of Test Results

The product was installed in a 2m wide and 10m long drain with a 18% gradient. After being pegged down, it was subjected to a water flow of 450 litres per second.

The peak velocity achieved was 3.33 metres per second, with the depth of flow being 0.293m. Soil loss in the lined channel was zero, whilst in the unprotected section, soil loss was calculated at 140kg/m.

Rainfall Interception

Vegetation intercepts a proportion of incoming rainfall, part of which remains on the leaves and stems of the plants. Some of this water returns to the atmosphere by way of evaporation or some is taken up by the plants. This interception also reduces the size, velocity, and volume of rain drops reaching the soil.

Runoff Volume

As a result of a combination of surface roughness, infiltration, and interception, there is much less surface water runoff from vegetated areas than from bare or armoured soil.

The ability of vegetation to reduce runoff volume may be offset by local increases in rainfall volume supplied to the surface from paved areas. Where this concentration of supply exceeds the local infiltration capacity of the soil, runoff will be generated.

Detailed Report

Please feel free to download the full word document containing all details of the scientific testing. Right click the MICROSOFT WORD 2000 icon and Save Target As to begin the download.

STAYturf Performance Report (Word format)