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Wyssling Consulting <br />76 N. Meadowbrook Drive <br />Alpine, UT 84004 <br />(201) 874-3483 <br />swyssling@wysslingconsulting.com <br />Existing <br />Roof Dead Load Ziesmer Residence <br />9.0 psf Clay or Conc Tile 2202 Freeman Street <br />2.5 psf 3/4" Plywood Sheathing Santa Ana, CA <br />0.8 psf 2x4 Roof Framing @ 24 in. o.c. <br />0.0 psf Ceiling, Mechanical, Electrical <br />0.6 psf Miscellaneous <br />13 psf TOTAL <br />Second Floor Dead Load <br />0 psf Floor Finishes <br />0 psf 1 1/8" Subfloor Sheathing <br />0 psf Joists @ 16' o.c. <br />0 psf Partitions <br />0 psf Ceiling, Mechanical, Electrical <br />0 psf Miscellaneous <br />0 psf TOTAL <br />Roof Live Load Floor Live Load <br />20 psf Reducible 0 psf Reducible <br />Roof Snow Load <br />pf = 0.7 x pg = 26 psf Flat Roof Snow Load (ASCE 7-16 Eq. 7.3-1) <br />Additional <br />Roof Dead Load <br />2.4929 psf <br />Roof Live Load with Solar Panels <br />0 psf <br />Roof Snow Load with Solar Panels <br />23 psf Sloped Roof Snow Load (ASCE 7-16 Eq. 7.4-1) <br />Total <br />Total Existing Roof Load = (DLROOF + LLROOF) AreaROOF <br />= 106223 lbs <br />Total New Roof Load = (DLROOF) AreaROOF + (DLADD) AreaADD + (LLROOF) (AreaROOF - AreaADD) <br />= 106023 lbs <br />Change in Demand = (Total New Roof Load - Existing Roof Load) / Existing Roof Load <br />-0.19% <br />Total New Gravity Loads are less than Existing Loads. OK <br />2018 IEBC Section 807.4 states: <br />Gravity Loads <br />"Existing structural elements supporting any additional gravity loads as a result of the alterations, including the effects of <br />snow drift , shall comply with the International Building Code. EXCEPTION: 1. Structural elements whose stress is not <br />increased by more than 5%." <br />2202 N Freeman St <br />02/08/22