綠建築基地保水技術工法設計指引之研究

A Study of Technical Handbook for Soil Water Content of Green Buildings

台灣因過度開發，都會區綠地明顯不足與社區過度不透水化，使土地喪失水的涵養能力，亦使得地表逕流量暴增，而造成水災頻傳。然而這些災難並非不可避免，只要加強建築基地保水及透水設計就可減緩其弊害。綠建築標章制度自1999 年開始施行，截至2007 年底，已約有1600 件通過評定審查，惟因相關保水技術工法，仍處於理論假設之計算層次，為協助落實相關「保水」政策，內政部建築研究所雖已於2006 年完成相關理論分析及設計研究，但因分由不同專家學者依據不同保水設施的功能及目的撰擬，且欠缺相關設計條件、流程及規劃重點提示等資料，本研究均將進一步予以補充，並以技術設計指引的方式彙整，以期有效提供設計規劃者應用參考，提昇國內建築基地保水性能。

Urbanization reduces the opportunity of stormwater infiltration that lessens groundwater rechargeand increases pollutant loads to streams. Reduction of infiltration from impervious areas in the urbanenvironment is one of the key issues in urban flooding; therefore, increasing the infiltration opportunityand capacity in the urban environment can be a good option to tackle this problem. There are nineindicators in the evaluation system of 'Green Building' in Taiwan. The indicator of soil water content atconstruction site is to maintain the hydrologic conditions between pre- and after-development at theconstruction site. Various techniques to retain and infiltrate water are recommended in the evaluationmanual. In order to strength the development of Green Building, technical handbook for soil watercontent plays an absolutely important role. The purpose of the study is to research the design informationof soil water content techniques and develop the technical handbook for soil water content in Taiwan. Thetechnical handbook is to increase emphasis on improving water quality and protecting water resourcesthrough various techniques to retain and infiltrate water. This technical handbook shall provide designstandards and planning concepts to guide planners, land developers, engineers, contractors, and othersinvolved with planning, designing, reviewing, approving, and constructing land development projects.The information can be an advice to improve for lack of soil water content index of Green Building,except that this work can be a frame of reference when the government sets up the relevant polices.