ASHRAE STD 189.1
Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings
| Organization: | ASHRAE |
| Publication Date: | 26 June 2010 |
| Status: | inactive |
| Page Count: | 9 |
scope:
FOREWORD
This addendum changes the daylighting definitions to
coincide with those in ASHRAE/IESNA Standard 90.1 to facilitate
consistent use of these terms. Some changes are semantic, such as
changing from daylight zone to daylight area and changing from
adjacent to vertical fenestration to primary sidelight area. For
the daylight area under skylights and under roof monitors,
geometric relationships between obstructions, heights, and
distances from glazing are provided to allow daylight areas to
extend beyond obstructions where appropriate. Clerestory was
deleted since roof monitor sufficiently describes roof elements
other than skylights. The changes to toplighting are not
substantive but are proposed to utilize the same text as
ASHRAE/IESNA Standard 90.1 to ensure consistent use. Effective
aperture has been replaced with sidelighting effective aperture,
again to coincide with ASHRAE/IESNA Standard 90.1. For background
documentation on the analysis used to derive sidelighting effective
aperture, refer to
www.h-m-g.com/ASHRAE
Document History