scope:

FOREWORD

This addendum describes ANSI/ASHRAE Standard 209, Energy Simulation Aided Design for Buildings Except Low-Rise Residential Buildings, in Informative Annex I: "Building Energy Modeling," and adds references in this annex. This addendum revises language in the first paragraph of Informative Annex I from a modeler's perspective.

Standard 209 recognizes the value of modeling in making informed decisions throughout the design, build, and commissioning stages of a building. It does so through identification of eleven modeling cycles and providing guidelines and establishing requirements specific to each of these cycles. "Major renovations of or additions to existing buildings" are explicitly included in the scope of Standard 209. The SSPC 209 is in the process of revising the standard and has recognized that it could be improved by identifying specific modeling cycles relevant to alterations or additions to advancing energy efficiency of existing buildings. In doing so, guidelines and requirements specific to these projects are being considered. SSPC 209 has recognized that a connection with the provisions of Standard 100 would be valuable to these efforts. This addendum serves as a step to making that connection from Standard 209 to Standard 100.

Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and (for deletions) unless the instructions specifically mention some other means of indicating the changes.