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HomeMy WebLinkAboutFile Documents.108 Midland Ave.0264.2017 (16).ARBK aec Architectural Engineering Consultants, Inc. Mechanical,Electrical,&Lighting Design Services An Office with LEEDTM Accredited Professionals Warm Roof Assembly Worksheet Project: Sandler Residence AEC Project Number: 17017 Date: 6/27/2017 Calculated By: Bryan Urban Thermal Resistance of Assembly-Typical Roof Thickness Component R-Value Outside air Layer 0.17 Varies Water-proof Membrane 0.2 5/8" Plywood 0.77 6" Tapered Rigid Insulation 12.5 5/8" Plywood 0.77 6" Spray Foam Insulation 37.5 5/8" Gypsum Board 0.56 Inside Air Layer 0.65 Rew 51.91 Rt.! 53.12 Re,a R Value of the Exterior Sheating Rtotai R Value of the Total Roof Assembly Tin Interior Temperature(70°) Tout Exterior Temperature(Assuming-20.0°) Tinterface Temperature at the Rigid/Batt Insulation Interface Tinterface Re,n / Rtotal * (Tin - Tout) + Tout Tinterface 51.91 53.12 70 -20 -20 Tinterface 67.9°F Dewpoint at 30%Relative Humidity 37.2°F Dewpoint at 35%Relative Humidity 41.1°F The temperature of the foam/batt insulation interface is 67.9°F. Therefore,the resulting dew point of 41.1°F would occur in the exterior impermeable insulation,which verifies compliance. RECEIVED 10/16/2017 ASPEN BUILDING DEPARTMENT ZINC STANDING SEAM METAL ROOFING SLOPE REF. PLANS 2 LAYERS FIRE-RESISTANT SELF ADHERING WATERPROOFING MEMBRANE (GAF VERSASHIELD FR. ESR-2053) N - 2" RIGID INSULATION WITH NAIL BASE R-12 !: PLYWOOD SHEATHING REF. STRUCT. DWGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . rn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6" SPRAY FOAM INSULATION R-37.5 ROOF JOISTS REF. STRUCTURAL DRAWINGS 1/2" PLYWOOD SHEATHING T&G WOOD REF. RCP AND FINISH SCHEDULE CLASS 'A' ROOF ASSEMBLY R-1 METAL ROOF SCALE 1 1/2" = 1'-0" RECEIVED 10/16/2017 ASPEN BUILDING DEPARTMENT 90 MIL. FIRE RESISTANT SELF- ADHERING EPDM ROOFING MEMBRANE SLOPE (FIRESTONE RUBBERGUARD LS-FR. REF. ROOF PLAN ESR-3026) w OSB NAIL BASE TAPERED RIGID INSULATION MECHANICALLY FASTEND TO DECK 1/4" PER FT. SLOPE TO DRAIN l 2 1/2" MIN. THICKNESS AT DRAINS . R-12.5 . . . . . . . . . . . . . . . . . . . . . . . . . PLYWOOD SHEATHING REF. STRUCT. DWGS. 6" SPRAY FOAM INSULATION :, .. R-37.5 ROOF JOISTS REF. STRUCTURAL DRAWINGS CEILING FINISH REF. REFLECTED CLG PLANS FOR HEIGHTS AND FINISHES CLASS 'A' ROOF ASSEMBLY R-2 LOW SLOPE ROOF SCALE 1 1/2" = 1'-0" RECEIVED 10/16/2017 ASPEN BUILDING DEPARTMENT