Rating System

LEED BD+C: New Construction, LEED BD+C: Schools, LEED ID+C: Commercial Interiors, LEED BD+C: Core and Shell, LEED O+M: Existing Buildings

Rating System Version

v2 - LEED 2.2, v2 - Schools 2007, v2 - LEED 2.0, v2 - LEED 2.0, v3 - LEED 2008

Inquiry

The project involves the remodeling of a fieldhouse building in Toledo, OH, to incorporate classrooms, lecture halls and academic office spaces. The Mechanical Systems will be completely replaced to accommodate an entirely different space use. The Project Team would like to use the IAQ Procedure, as described in Section 6.3 ASHRAE Standard 62.1-2004 (the "Standard"), in place of the Ventilation Rate Procedure of the same Standard. Rather than determining the volume of outside air needed based on space type/application, occupancy level, and floor area, the building and ventilation systems are designed to maintain the concentrations of specific contaminants at or below certain limits identified during building design and to achieve the design target level of perceived indoor air quality acceptability by building occupants and/or visitors, excluding dissatisfaction related to thermal comfort, noise and vibration, lighting, and psychological stressors. The design will strive to provide satisfaction in those areas as well, but those areas will not be measured by this procedure. The Project Team will use the documentation guidelines prescribed in Section 6.3.2 of the Standard with all assumptions documented according to Sections 4.3, 5.2.3, 5.17.4 and 6.3.2. The Project Team will use mass balance analysis as their design approach, using a computer-generated model to simulate contaminant levels, ventilation rates and effectiveness of mechanical filtration systems. The goal of the Project Team, by using this procedure to guide their HVAC design, is to optimize energy performance without compromising indoor air quality.