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This site has been developed at the Washington University's Department of Architecture to be used as a design tool that facilitates energy considerations in buildings at the preliminary design stages. Although every effort has been made to insure the accuracy of the data and methods presented, we can not insure this material to be free of errors. None of the materials presented on this site are intended as expert design advice; We recommend consulting a professional architect or energy consultant. Neither Washington University or department thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed.