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7.A. - Page 273 of 285 <br />2019 Nonresidential New Construction Reach Code Cost Effectiveness Study <br />Building Component <br />Measure Name <br />Measure Description <br />Notes <br />Include? <br />Expand duct leakage testing requirements based <br />Envelope <br />Duct Leakage Testing <br />on ASHRAE Standard 215-2018: Method of Test to <br />More research needs to be done on current duct <br />N <br />Determine Leakage of Operating HVAC Air Distribution <br />leakage and how it can be addressed. <br />Systems (ANSI Approved). <br />Instead of this measure, analyzed measure which <br />Envelope <br />Fenestration area <br />Reduce maximum allowable fenestration area to 30%. <br />looked at limiting fenestration based on wall <br />N <br />orientation. <br />Envelope <br />Skinny triple pane windows <br />U -factor of 0.20 for all windows, with no changes to <br />Market not ready. No commercially -available <br />N <br />existing framing or building structure. <br />products for commercial buildings. <br />Detailed prescriptive requirements for shading based on <br />Title 24 already allows owner to trade off SHGC with <br />Envelope <br />Permanent projections <br />ASHRAE 189. PF >0.50 for first story and >0.25 for other <br />permanent projections. Also, adding requirements for <br />N <br />floors. Many exceptions. Corresponding SHGC multipliers <br />permanent projections would raise concerns. <br />to be used. <br />Infiltration rates are a fixed ACM input and cannot be <br />changed. A workaround attempt would not be <br />precise, and the practicality of implementation by <br />Envelope <br />Reduced infiltration <br />Reduce infiltration rates by improving building sealing. <br />developers is low given the modeling capabilities and <br />N <br />the fact that in -field verification is challenging. <br />Benefits would predominantly be for air quality rather <br />than energy. <br />2019-07-25 <br />525 <br />