This article provides a comparison of several Life Cycle Assessment methodologies and their conformity to the ISO 14001 Standards. The study found that all methods surveyed meet the basic requirements of ISO 14001 in ...This article provides a comparison of several Life Cycle Assessment methodologies and their conformity to the ISO 14001 Standards. The study found that all methods surveyed meet the basic requirements of ISO 14001 in regards to evaluating the environmental impact with integrated hybrid method most satisfying the requirements.展开更多
Reliable service life data of building products are of great importance when completing environmental LCA （life cycle assessment） reviews, for LCC （life cycle costing） and for maintenance planning tasks. A researc...Reliable service life data of building products are of great importance when completing environmental LCA （life cycle assessment） reviews, for LCC （life cycle costing） and for maintenance planning tasks. A research project was set up to answer the following research questions： （1） what are reliable service life data of current used building products; and （2） how can generic data about the service lives of building products be tailored to specific project circumstances using the ＂factor method＂ described in the ISO （International Standard Organization） 15686 Series： ＂Buildings and Constructed Assets-Service-Life Planning＂. Experts of industry organisations for building materials and products made a final judgement of the new established reference service lives. Reference service lives of building products may show a large unknown bandwidth around the average. That will make the bandwidth of estimated service lives, taking the project situation of building components into account, very big. Experts have raised objections to the use the factor method for deriving mathematically a bandwidth of estimated service lives of a building product from the reference service life of the product. A practical analytical application of the factor method has been made by describing all factors and underlying criteria and a reference situation.展开更多
文摘This article provides a comparison of several Life Cycle Assessment methodologies and their conformity to the ISO 14001 Standards. The study found that all methods surveyed meet the basic requirements of ISO 14001 in regards to evaluating the environmental impact with integrated hybrid method most satisfying the requirements.
文摘Reliable service life data of building products are of great importance when completing environmental LCA （life cycle assessment） reviews, for LCC （life cycle costing） and for maintenance planning tasks. A research project was set up to answer the following research questions： （1） what are reliable service life data of current used building products; and （2） how can generic data about the service lives of building products be tailored to specific project circumstances using the ＂factor method＂ described in the ISO （International Standard Organization） 15686 Series： ＂Buildings and Constructed Assets-Service-Life Planning＂. Experts of industry organisations for building materials and products made a final judgement of the new established reference service lives. Reference service lives of building products may show a large unknown bandwidth around the average. That will make the bandwidth of estimated service lives, taking the project situation of building components into account, very big. Experts have raised objections to the use the factor method for deriving mathematically a bandwidth of estimated service lives of a building product from the reference service life of the product. A practical analytical application of the factor method has been made by describing all factors and underlying criteria and a reference situation.
