fenestration product SHGCs at a center-of-glazing value of 0 and 1.; Equation 4-4 Where = Representative SHGC of product with SHGC0 SHGC = 0 Representative SHGC of product with a = SHGC1 SHGC = 1. Frame SHGC-values frame, door-lite frame, = SHGCx door core, door panel core, and door panel edge, as determined by Equation 4-3 = Sum of the frame, door-lite frame, door core, Ax door panel core, and door panel edge projected areas, m2 (ft2) Divider SHGC, as determined by Equation 4-3 SHGCd = Divider area Ad = Edge-of-glazing SHGC, set to zero for SHGC0 SHGCe = and one for SHGC1 Edge-of-glazing area Ae = Edge-of-divider SHGC, set to zero for SHGC0 SHGCde = and one for SHGC1 Edge-of-divider area Ade = Door-lite edge SHGC, set to zero for SHGC0 SHGCle = and one for SHGC1 Door-lite edge area Ale Center-of-glazing SHGC, set to zero for SHGC0 SHGCc = and one for SHGC1 Center-of-glazing area Ac = Projected fenestration product area Apf = For any SHGCc, the total fenestration product SHGC can be calculated using Equation 4-1 of this document. Perform the following calculations (as shown in Equation 4-5) to determine VT0 and VT1, where applicable:: Multiply all fenestration component VT; frame, door panel core, door panel edge, door core, door-lite frame, divider, door-lite frame edge, centerofglazing, edgeofglazing, edge-of-divider, and frame VT by their corresponding areas. For VT0, the VTc, VTe, VTde, and VTle shall be zero. For VT1, the VTc, VTe, VTde, and VTle shall be one.
fenestration product SHGCs at a center-of-glazing value of 0 and 1.; Equation 4-4 Where SHGC0 = Representative SHGC of product with SHGC = 0 SHGC1 = Representative SHGC of product with a SHGC = 1. SHGCx = Frame SHGC-values frame, door-lite frame, door core, door panel core, and door panel edge, as determined by Equation 4-3 Ax = Sum of the frame, door-lite frame, door core, door panel core, and door panel edge projected areas, m2 (ft2) SHGCd = Divider SHGC, as determined by Equation 4-3 Ad = Divider area SHGCe = Edge-of-glazing SHGC, set to zero for SHGC0 and one for SHGC1 Ae = Edge-of-glazing area SHGCde = Edge-of-divider SHGC, set to zero for SHGC0 and one for SHGC1 Ade = Edge-of-divider area SHGCle = Door-lite edge SHGC, set to zero for SHGC0 and one for SHGC1 Ale Door-lite edge area SHGCc = Center-of-glazing SHGC, set to zero for SHGC0 and one for SHGC1 Ac = Center-of-glazing area Apf = Projected fenestration product area For any SHGCc, the total fenestration product SHGC can be calculated using Equation 4-1 of this document. Perform the following calculations (as shown in Equation 4-5) to determine VT0 and VT1, where applicable:: Multiply all fenestration component VT; frame, door panel core, door panel edge, door core, door-lite frame, divider, door-lite frame edge, centerofglazing, edgeofglazing, edge-of-divider, and frame VT by their corresponding areas. For VT0, the VTc, VTe, VTde, and VTle shall be zero. For VT1, the VTc, VTe, VTde, and VTle shall be one.
NFRC_200_Custom_Grid_Ballot.docx