Page 214 - Solar Power in Building Design The Engineer's Complete Design Resource

184 LEED—LEADERSHIP IN ENERGY AND ENVIRONMENTAL DESIGN

naturally ventilated spaces where air distribution is achieved in a laminar flow pattern.
Some HVAC design strategies used include displacement and low-velocity ventilation,
plug flow or underfloor air delivery, and operable windows that allow natural air
circulation.

Construction (IAQ) air quality management plan, credit no. 3 This meas-
ure applies to air quality management during renovation processes to ensure that
occupants are prevented from exposure to moisture and air contaminants. One credit
is awarded for installation of absorptive materials that prevent moisture damage and
filtration media to prevent space contamination by particulates and airborne materi-
als. A second point is awarded for a minimum of flushing out of the entire space, by
displacement, with outside air for a period of 2 weeks prior to occupancy. At the end
of the filtration period a series of test are performed to measure the air contaminants.

Low-emitting materials, credit no. 4 This measure is intended to reduce indoor
air contaminants resulting from airborne particulates such as paints and sealants. Four
specific areas of concern include the following: (1) adhesives, fillers, and sealants;
(2) primers and paints; (3) carpet; and (4) composite wood and agrifiber products that
contain urea-formaldehyde resins. Each of these product applications are controlled
by various agencies such as the California Air Quality Management District, Green
Seal Council, and Green Label Indoor Air Quality Test Program.
The point weight awarded for each of the four measures is 1.

Indoor chemical and pollutant source control, credit no. 5 This is a meas-
ure to prevent air and water contamination by pollutants. Mitigation involves installa-
tion 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, which generate trace air pollutants, are equipped with dedicated air
exhaust and ventilation systems that create negative pressure. Likewise, water circula-
tion, 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 of these measures are accomplished by central-
ized or local area lighting control and HVAC building control systems. These meas-
ures are intended to control lighting and air circulation. Each of the two measures is
awarded one point.

Thermal comfort, credit no. 7 The intent of this measure is to provide envi-
ronmental comfort for building occupants. One credit is awarded for thermal and