Rating System

LEED BD+C: New Construction, LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.2, v3 - LEED 2009

Inquiry

The intent of this credit is to "Establish the minimum level of energy efficiency for the proposed building and systems." The requirements of this credit are as follows: - Comply with the mandatory provisions of ASHRAE Standard 90.1-2004. - Comply with the prescriptive requirements or performance requirements of ASHRAE Standard 90.1-2004. Table 5.5-4 of the Standard, Building Envelope Requirements for Climate Zone 4A: The requirement is as follows: - Fenestration, vertical glazing 40.1-50 % of wall, nonresidential, Ufixed = 0.46, SHGC = 0.25. The exception that we would like to take is as follows: - Field side glazing does not comply with the requirements. Compliant glazing would negatively impact the function of the space. The glazing is there to allow spectator viewing of the ballgame, and its optical and impact properties are of great importance. Single pane, clear glazing must be used in order to provide optimum viewing at all angles, and to provide the required impact resistance. - Since the spaces which have field side glazing are occupied only during a limited number of special events, all Code Authorities throughout the country have allowed us to exclude this component from complying with the published criteria in either the ASHRAE Standard or their own local codes. - We ask that the following values are accepted: U = 1.0, SHGC = 0.75. These performance criteria are typical of ballparks. - We would like to model the baseline building performance and the proposed building performance with the proposed field side fenestration. The project would see neither a positive nor a negative effect on the energy savings.