Building Code Board of Appeals Agenda and Packet 2024 09 25

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Building Code Board of Appeals Agenda September 25, 2024 Page 16 of 64 43. Section C503.2 Buildinz Envelope is amended with exception remaining to read as follows: New building envelope assemblies that are Hart of the alteration shall comply with Sections C402.1 through C402.5. Existing ceilings, roofs, all wall types, or floors exposed during construction shall comply with Table C402.1.3. 44. Section C505.1 General, is hereby amended to read as follows: C505.1 General. Where the use in a space changes from one use in Table C405.3.2(1) or C405.3.2(2) to another use in Table C405.3.2(1) or C405.3.2(2), the installed lighting wattage shall comply with Section C405.3. Where the space undergoing a change in occupancy or use is in a building with a fenestration area that exceeds the limitations of Section C402.4.1, the space is exempt from Section C402.4.1 provided that there is not an increase in fenestration area. Exception: Egress doors with fenestration are allowed to bring total fenestration percentages over the allowed maximum amount of vertical fenestration. APPENDIX PT MODELING TO A PERFORMANCE TARGET PT101 Scope. This section establishes criteria for demonstrating compliance with a performance target, and is required for new hotels (occupancy R-1), multifamily (occupancy R-2), offices, primary and secondary schools, and warehouses. All end use load components within and associated with the building and their building sites shall be modeled. PT102 Mandatory requirements. The requirements in this section are mandatory requirements and shall be required in addition to the provisions of ASHRAE 90.1 Appendix G. PT103 Performance target. Projects of the types listed in Table PT103 shall demonstrate that the proposed design reaches a fixed energy use intensity (EUI) less than or equal to the values in Table PT103, calculated utilizing the energy modeling procedures of Appendix G of ASHRAE 90.1. For buildings with multiple occupancy types, the modeled performance target shall be a weighted average of the floor area of each occupancy type. Exception: Energy used for electric vehicle charging, data centers, and process loads shall be excluded from compliance modeling.