The initial concept for the scheme also included a green roof for the portico which would have been the starting point for that storm water chain.
Nigel dunnett roof garden.
Dunnett n nagase a hallam a 2008 the dynamics of planted and colonising species on a green roof over six growing seasons 2001 2006.
Above this layer sits a filter fleece that lets water through but which prevents the growing medium from being washed away into the drainage layer.
Above the roof waterproofing layer there is a modular drainage sheet that allows excess water to drain from the system but also acts as a permanent reservoir of water at the base of the gardens.
Photo by nigel dunnett and noël kingsbury green roofs can be installed on sloping roofs although they will be subject to greater moisture stress than on flat or gently sloping roofs.
He writes regularly for landscape and garden publications including gardens illustrated and the garden.
Nigel dunnett the landscape agency.
Nigel dunnett on pinterest.
He is director of the green roof centre sheffield and acts widely as a consultant on green roof design and planting and sustainable garden and landscape design in general.
Sep 1 2014 explore yvonne voermans s board garden designers.
However subsequent structural analysis proved the portico to be unsuitable for supporting a green roof.
Nigel dunnett is professor of planting design and urban horticulture at the university of sheffield.
See more ideas about garden garden design garden inspiration.
Urban ecosystems 11 4 373 384.
He and colleague james hitchmough led the team behind the olympic park london back in 2008.
The john lewis rain garden.