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Guth
Awards
2001
IIDA Awards from the
Puget Sound Section of the IESNA
Issaquah Library
Issaquah, Washington
Lighting Designer(s)
Mary Claire Frazier IALD LC, Candela
Lighting Design
Project Owner
King County Library System
Photography
Art Grice & James Housel
Exterior
Architecturally echoing a Northwest Indian Longhouse, Issaquah Library
utilizes timber construction and a tall central roof monitor.
Clerestory
The design intent was to enhance the architectural form and materials
while providing appropriate task and ambient light.
Lobby
The narrow lobby rises to forest-like heights. LV track, concealed within
side louvers, provides cross and uplight on warm wood surfaces. Integral
LV track in side niches dapples light across the floor.
Front Desk
Libraries require relatively high, evenly distributed light levels for
reading and glare control for computer use.
Collections
Long-term maintenance and energy efficiency priorities were challenged
by the soaring ceiling.
Reference Desk
Collections lighting provides 50 footcandles ambient, mainly downlight
for efficiency, with enough uplight to reveal the structure and ease contrast
with the wood ceiling.
Central Area Under
Monitor Roof
Cost-effective direct fluorescent pendants with parabolic louvers align
with mechanical ducts, and hang at a uniform height in a pattern that
avoids mounting over stacks with integral stack lights. Track mounted
ceramic metal halide fixtures softly uplight the wood ceiling and supplement
downlight in the central spine. All overhead lighting is within ladder
reach. The 1.5w/sf energy code limit was met.
Custom Stack Lights
Custom stack lights, fluorescent strips inside cost-effective sheet metal
housings, combine baffled direct and reflected light to provide even,
glare-free light over the entire height of tall stacks.
Multi-Purpose Room
The same concepts provide flexible, controllable lighting in the multi-purpose
room. Direct pendants and fluorescent strips in sheet metal boxes on top
of the mechanical ducts provide ambient light while track mounted accent
lights and recessed wallwashers provide lighting for speakers and presentation
surfaces.
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