SketchUp-IFC-Manager is an extension that helps you to add more useful information to IFC models created with SketchUp.. It’s created around the dutch “BIM basis ILS” (English: BIM basic IDM) initiative that tries to achieve a basic Information delivery specification for the dutch building industry (http://www.bimloket.nl/BIMbasisILS)
IFC Manager includes a (minimally modified) copy of rubyzip which is licensed under the Ruby license. Many thanks to the people at the Rubyzip project: Robert Haines, John Lees-Miller, Oleksandr Simonov, Thomas Sondergaard.