[Code of Federal Regulations] [Title 10, Volume 3] [Revised as of January 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 10CFR434.507] [Page 394] TITLE 10--ENERGY CHAPTER II--DEPARTMENT OF ENERGY PART 434_ENERGY CODE FOR NEW FEDERAL COMMERCIAL AND MULTI-FAMILY HIGH RISE RESIDENTIAL BUILDINGS--Table of Contents Subpart E_Building Energy Cost Compliance Alternative Sec. 434.507 Calculation procedure and simulation tool. 507.1 The Prototype or Reference Buildings shall be modeled using the criteria of subsections 510 and 521. The modeling shall use a climate data set appropriate for both the site and the complexity of the energy conserving features of the design. ASHRAE Weather Year for Energy Calculations (WYEC) data or bin weather data shall be used in the absence of other appropriate data.