Page 238 - Alternative Energy Systems in Building Design

214 ENERGY CONSERVATION

Indoor chemical and pollutant source control, credit no. 5 This is a measure
to prevent air and water contamination by pollutants. Mitigation involves installation of
air and water filtration systems that absorb chemical particulates entering a building.
Rooms and areas such as document-reproduction rooms, copy rooms, and blueprint
quarters that generate trace air pollutants are equipped with dedicated air exhaust and
ventilation systems that create negative pressure. Likewise, water circulation, plumbing,
and liquid waste disposal are collected in an isolated container for special disposal. This
measure is credited a single point.

Controllability of systems, credit no. 6 The essence of this measure is to
provide localized distributed control for ventilation, air-conditioning, and lighting.
One point is awarded for autonomous control of lighting and control for each zone
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covering 200 ft of area with a dedicated operable window within 15 ft of the
perimeter wall. A second point is given for providing air and temperature control
for 50 percent of the nonperimeter occupied area. Both these measures are accom-
plished by centralized or local-area lighting control and HVAC building-control
systems. These measures are intended to control lighting and air circulation. Each
of the two measures is awarded 1 point.

Thermal comfort, credit no. 7 The intent of this measure is to provide environ-
mental comfort for building occupants. One credit is awarded for thermal and humidity
control for specified climate zones and another for the installation of a permanent
central temperature and humidity monitoring and control system.

Daylight and views, credit no. 8 Simply stated, this measure promotes architec-
tural space design that allows for maximum outdoor views and interior sunlight expo-
sure. One credit is awarded for spaces that harvest indirect daylight for 75 percent of
spaces occupied for critical tasks. A second point is awarded for direct sight of vision
glazing from 90 percent of normally occupied workspaces. It should be noted that copy
rooms, storage rooms, mechanical equipment rooms, and low-occupancy rooms do not
fall into these categories. In other words, 90 percent of the workspace is required to
have direct sight of a glazing window. Some architectural design measures taken to
meet these requirements include building orientation, widening of building perimeter,
deployment of high-performance glazing windows, and use of solar tubes.

INNOVATION AND DESIGN PROCESS
Innovation in design, credit no. 1 This measure is in fact a merit award for an
innovative design that is not covered by LEED measures and in fact exceeds the
required energy-efficiency and environmental pollution performance milestone guide-
lines. The 4 credits awarded for innovation in design are (1) identification of the design
intent, (2) meeting requirements for compliance, (3) proposed document submittals
that demonstrate compliance, and (4) a description of the design approach used to meet
the objective.