Rating System

LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.2

Inquiry

The intent of this credit is to "Achieve increasing levels of energy performance above the baseline in the prerequisite standard to reduce environmental and economic impacts associated with excessive energy use." The requirements of Option 1 of this credit are as follows: - Demonstrate a percentage improvement in the proposed building performance rating compared to the baseline building performance rating per ASHRAE/IESNA Standard 90.1-2004 (without amendments) by a whole building project simulation using the Building Performance Rating Method in Appendix G of the Standard. Table G3.1, number 5.c. in Appendix G of the Standard concerns vertical fenestration. The baseline requirement is as follows: - Vertical fenestration areas for new buildings and additions shall equal that in the proposed design or 40% of the gross above-grade wall area, whichever is smaller, and shall be distributed uniformly in horizontal bands across the four orientations. The exception that we would like to take is as follows: - The intent of the baseline requirement is to encourage thoughtful fenestration orientation and glazing percentage of a building that results in energy savings. The Project is an exception to this approach. - The facility exists for the purpose of sports viewing. The field-side glazing exists in order for the facility to function as intended. - The exterior walls of concessions, restrooms, and other ancillary spaces typically do not have glazing. Concessions and restrooms are typically semi-heated only. Modeling the baseline with glazing distributed over the concessions and restrooms doesn\'t seem to meet the intent of the Standard. - We would like to model the baseline building performance and the proposed building performance with the same vertical fenestration-the actual building fenestration. We ask that this exception is made for the project.