Wayne Trowbridge of the University of Kansas shared his institution's project weighting spreadsheet.
More information is available at the following files shared through Google Docs:

Overview of how to edit spreadsheet:
https://docs.google.com/open?id=0B_ire-aOre1BODJkMzA5MTQtMDUzZS00MWRlLWIyZTAtZThkMjIwMjBkZGQ2

Spreadsheet:
https://docs.google.com/open?id=0B_ire-aOre1BYjFiYTBiZGItMWE2ZC00NjBmLWFmOWItNjc0OTU5ODM0MGZi