德国种植屋面的设计施工和维护.pdfVIP

INTRODUCTION TO THE GERMAN FLL-GUIDELINE FOR THE PLANNING, EXECUTION AND UPKEEP OF GREEN-ROOF SITES Peter M. Philippi Green Roof Service, LLC Abstract As the development of the North American green roof market picks up speed, more and more people are designing, specifying, installing, maintaining and evaluating green roofs. Unlike in Germany, where green roofs are highly standardized already, most projects in the United States are custom made solutions. The individual evaluation of research results and technical information of manufacturers and material suppliers is very difficult though, especially without availability of commonly accepted definitions, requirements and testing methods. While American Standard Testing Methods (ASTM) regulations in this field are still missing, existing standards developed in Europe could possibly be used. The goal is to provide a common basis and to avoid failures, as failures could impede further growth to the American green roof market. The objective of this paper is to give an introduction to the German FLL-Green Roof Guidelines and to discuss their relevance for the American Green Roof Market. The German Landscape Research, Development and Construction Society (FLL) is an independent non-profit organization. It was founded in 1975 by eight professional organizations for “the improvement of environmental conditions through the advancement and dissemination of plant research and its planned applications”(1). The FLL green roof working group is only one of 40 committees which have published a long list of guidelines and labor instructions. The FLL has been working on standards for green roof technology for 25 years. Their ‘Guideline for the Planning, Execution and Upkeep of Green-Roof Sites’ (FLL-gu