manual or automatically operated
high and low level windows, which
occupants or the BMS can open for
free cooling and natural ventilation
when conditions allow for it.
The second AHU supplies CIRS’s
425-seat auditorium. This space uses
an underfloor metal air distribution
system manufactured specifically for
theaters. Unlike the offices and labs,
which don’t have active cooling, the
auditorium uses mechanical cooling
through heat pumps that reject heat
into the geothermal field when heat
is not being extracted from it.
The other areas of the building
that are actively cooled through the
building heat pumps are data rooms
and the electrical vault in the base-
ment. Heat recovery ventilators har-
vest heat from air discharged through
the building exhaust systems.
Envelope and Structure. CIRS’s
high performance envelope and
high R-value design uses building
materials that limit solar gains, such
as low-e triple-pane sealed curtain-wall glass modules and low-e glass
double-pane punch-in windows.
The structure of CIRS is a hybrid
system. The basement and ground
level auditorium are cast-in-place
concrete, with a roof of curved glued
laminated timber (glulam) beams
supporting a solid wood roof over
The upper floors have a frame of
engineered wood members supporting a solid wood floor assembly.
In addition to the building-wide
fire suppression system, the wood
members are all sized slightly larger
than structurally required to handle
external charring in case of fire.
The vertical support is provided
by rectangular glulam columns
and supporting rectangular glulam
beams. Along the wings of the
building the beams span 32 ft ( 10
m) and are spaced 10 ft ( 3 m) apart.
The floor system spanning
between the beams is standard 2 ×
4 dimensional lumber, laid on end,
gang nailed together and covered
in a single layer of plywood. The
glulam and lumber underside of the
floor is left exposed while the top
is covered by a raised floor system
with a plenum for power, data and
Lateral resistance is provided
through two systems: Conventional
Two air-handling units (AHU)
provide conditioned air to the build-
ing. One provides conditioned air to
each floor’s underfloor air distribu-
tion (UFAD) metal plenum that sup-
plies each textile duct.
Each plenum has dampers that
the BMS can automatically shut off
by zone during unoccupied periods
or when the building is mostly relying on natural ventilation. CIRS has
Water Conservation Low-flow fixtures.
Rainwater System Harvests rainwater from
the rooftops, purifies it using filtration and
disinfection, and stores it for use in the
building. Storm water runoff is redirected
through bioswales to the local aquifer.
Wastewater Treatment System Treats
campus waste water using solar aquatics
and constructed wetland technologies. The
reclaimed water can be used to flush toilets and for irrigation.
Recycled Materials Recycled nylon fiber
carpets throughout; recycled rubber flooring in the lobby/atrium and café; fly ash
in hydraulic concrete admixtures; recycled
concrete pavers and recycled plastic planters, among other materials.
Daylighting Available in 100% of occupied
spaces; solar shades and spandrel panels
in the glazing system and the living wall are
designed to control glare and heat gain.
Individual Controls Manually operable
windows in office blocks. Manual diffusers at each vent in underfloor air system
allow inhabitants to control airflow in
Carbon Reduction Strategies The wood
structure demonstrates the use of both
pine beetle-damaged and certified wood
products as viable materials for institu-
tional applications that store carbon and
reduce the building’s greenhouse gas
(GHG) emissions from construction.
Transportation Mitigation Strategies
Following one of the imperatives defined by
the Living Building Challenge, the building
must use materials from within prescribed
radii. The material radii correlate with
product density and function. Heavier and
dense materials have the tightest radius.
Living Roof Recreates a meadow environment for birds, insects and native plants, and
contributes to reducing heat island effects by
providing evapotranspiration cooling.
Living Façade Provides shading during the
summer and allows warmth from the sun
to be absorbed by the building in winter.
The vegetated wall of vines uses rain or
reclaimed water for irrigation.
Solar Energy Harvested through collectors
that provide hot water for the building and
through photovoltaic panels.
Geoexchange System Transfers thermal
energy between the building and the
ground, providing heating in the winter and
cooling in the summer.
Heat Exchange System Collects waste heat
from within CIRS building systems and from
the adjacent Earth & Ocean Sciences (EOS)
building. Surplus heat is returned to EOS.
KEY SUSTAINABLE FEATURES