by Rebecca Walker — November 25, 2009—Requirements to reduce energy use and costs through fenestration, parking lot lighting and other proposed measures are being recommended for Standard 90.1.
ANSI/ASHRAE/IESNA Standard 90.1-2007, Energy Standard for Buildings Except Low-Rise Residential Buildings, provides minimum requirements for the energy-efficient design of buildings except low-rise residential buildings. Currently, 15 proposed addenda to the standard are open for public review.
Among the proposed addenda out for public comment is one requiring active exterior control rather than just require the control capability; another that would add bi-level control for general all-night applications, such as parking lots to reduce lighting when not needed; and one to add control for facade and landscaping lighting not needed after midnight.
A second public review of a proposed addendum would reduce solar loads by orienting the fenestration in more appropriate directions. Changed in response to comments during the first public review, this approach gives flexibility to building design teams to work with siting and fenestration and orientation as well as fenestration area to comply with the requirement.
Another proposed addendum updates building envelope requirements for opaque elements, such as walls and rooms, and fenestration (windows and skylights). A number of changes were made in response to public comments during the first public review.
To read the addenda or to comment, see the Web site.
