Marie-Curie IAPP ‘Green Roof Systems’ Project
The Green Roof Research Conference 18-19 March 2013, Sheffield
Introduction to water fluxes in green roof systems:
3. Protection mats: Water retention depending on slope and time Ralf Walker1, Tobias Emilsson2, 1
ZinCo GmbH, ralf.walker@zinco-greenroof.com, ZinCo GmbH, tobias.emilsson@zinco-greenroof.com
2
Introduction So far there hasn’t been a standardised testing procedure for protection mats used in green roofs. As the application varies from flat to sloped and as we wanted to get a first understanding of the potential short term water buffer related to stormwater management we developed a test procedure which would allow us the get robust results regarding the water holding capacity and a first understanding of a potential delay effect.
Overview of Methodology We have built two test benches where the slope can be adjusted using turnbuckles. Samples of mats which are 500 x 500 mm in size are placed on aluminium metal sheets which have small handles to manoeuvre them for weighing. 3 replicates were found to be enough to achieve good results.
Figure 1: Test bench with the possibility of slope adjustment