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Home My WebLink AboutCA_Energy_Calculations_Woods_11_171025_v2Prescriptive Energy Code Compliance for All Climate Zones in Washington Project Information Contact Information This project will use the requirements of the Prescriptive Path below and incorporate the the minimum values listed. In addition, based on the size of the structure, the appropriate number of additional credits are checked as chosen by the permit applicant. Authorized Representative ___________________________________________Date ___________________________ 1. Small Dwelling Unit: 1.5 credits 2. Medium Dwelling Unit: 3.5 credits 3. Large Dwelling Unit: 4.5 credits 4. Additions less than 500 square feet: .5 credits Option Credit(s) 1a Efficient Building Envelope 1a 0.5 1b Efficient Building Envelope 1b 1.0 1c Efficient Building Envelope 1c 2.0 1d Efficient Building Envelope 1d 0.5 2a Air Leakage Control and Efficient Ventilation 2a 0.5 2b Air Leakage Control and Efficient Ventilation 2b 1.0 2c Air Leakage Control and Efficient Ventilation 2c 1.5 3a High Efficiency HVAC 3a 1.0 1.0 3b High Efficiency HVAC 3b 1.0 3c High Efficiency HVAC 3c 1.5 3d High Efficiency HVAC 3d 1.0 4 High Efficiency HVAC Distribution System 1.0 1.0 5a Efficient Water Heating 5a 0.5 5b Efficient Water Heating 5b 1.0 5c Efficient Water Heating 5c 1.5 1.5 5d Efficient Water Heating 5d 0.5 6 Renewable Electric Energy 0.5 *1200 kwh 0.0 Total Credits 3.50 *Please refer to Table R406.2 for complete option descriptions Slabd R-Value & Depth 49j 21 int 21/21h 30g 10, 2 ft Ceilingk Wood Frame Wallg,m,n Mass Wall R-Valuei Each dwelling unit in a residential building shall comply with sufficient options from Table R406.2 so as to achieve the following minimum number of credits: *Table R402.1.1 and Table R402.1.3 Footnotes included on Page 2. Dwelling units exceeding 5000 square feet of conditioned floor area. Description Table R406.2 Summary Dwelling units less than 1500 square feet in conditioned floor area with less than 300 square feet of fenestration area. Additions to existing building that are greater than 500 square feet of heated floor area but less than 1500 square feet. All dwelling units that are not included in #1 or #3. Exception: Dwelling units serving R-2 occupancies shall require 2.5 credits. WHP311 Burnstead Const. LLC 11980 NE 24th Street Bellevue, WA 9805 All Climate Zones 0.029 0.042 n/a 10/15/21 int + TB n/a n/a n/a 0.056 0.30 0.50 n/a 0.026 0.056 Floor Below Grade Wallc,m Glazed Fenestration SHGCb,e Fenestration U-Factorb Skylight U-Factor U-FactoraR-Valuea B17004626 D12-015 V2 REVISION Received: 10/30/2017 / aalexander BUILDING DIVISION Table R402.1.1 Footnotes For SI: 1 foot .= 304.8 mm, ci .= continuous insulation, int .= intermediate framing. a R‐values are minimums. U‐factors and SHGC are maximums. When insulation is installed in a cavity which is less than the label or design thickness of the insulation, the compressed R‐value of the insulation from Appendix Table A101.4 shall not be less than the R‐value specified in the table. b The fenestration U‐factor column excludes skylights. The SHGC column applies to all glazed fenestration. c "10/15/21.+TB" means R‐10 continuous insulation on the exterior of the wall, or R‐15 on the continuous insulation on the interior of the wall, or R‐21 cavity insulation plus a thermal break between the slab and the basement wall at the interior of the basement wall. "10/15/21.+TB" shall be permitted to be met with R‐13 cavity insulation on the interior of the basement wall plus R‐5 continuous insulation on the interior or exterior of the wall. "10/13" means R‐10 continuous insulation on the interior or exterior of the home or R‐13 cavity insulation at the interior of the basement wall. "TB" means thermal break between floor slab and basement wall. d R‐10 continuous insulation is required under heated slab on grade floors. See R402.2.9.1. e There are no SHGC requirements in the Marine Zone. f Reserved. g Reserved. h Reserved. i The second R‐value applies when more than half the insulation is on the interior of the mass wall. j Reserved. k For single rafter‐ or joist‐vaulted ceilings, the insulation may be reduced to R‐38. l Reserved. m Int. (intermediate framing) denotes standard framing 16 inches on center with headers insulated with a minimum of R‐10 insulation. Table R402.1.3 Footnote a Nonfenestration U‐factors shall be obtained from measurement, calculation or an approved source or as specified in Section R402.1.3. Window, Skylight and Door Schedule Project Information Contact Information Width Height Ref. U-factor Qt. Feet Inch Feet Inch Area UA Exempt Swinging Door (24 sq. ft. max.)0.25 1 3 0 8 0 24.0 6.00 0.50 1 1 2 8 0 9.3 4.67 Vertical Fenestration (Windows and doors) Component Width Height Description Ref. U-factor Qt. Feet Inch Feet Inch Area UA 0.27 1 2 6 4 10.0 2.70 0.28 2 2 6 5 25.0 7.00 0.30 1 5 4 6 22.5 6.75 0.30 1 2 8 8 21.3 6.40 0.30 1 10 5 6 55.0 16.50 0.27 1 10 1 6 15.0 4.05 0.30 1 5 5 6 27.5 8.25 0.27 1 5 1 6 7.5 2.03 0.30 1 6 5 6 33.0 9.90 0.27 1 6 1 6 9.0 2.43 0.0 0.00 0.27 1 5 4 6 22.5 6.08 0.27 2 2 6 4 6 22.5 6.08 0.30 1 6 5 30.0 9.00 0.30 1 5 2 6 12.5 3.75 0.27 1 3 5 15.0 4.05 0.27 1 1 3 3.0 0.81 0.27 2 3 5 30.0 8.10 0.30 1 10 5 50.0 15.00 0.30 1 6 5 30.0 9.00 0.30 1 2 3 6 7.0 2.10 0.30 1 5 3 6 17.5 5.25 0.30 1 6 5 30.0 9.00 0.27 1 2 6 5 12.5 3.38 0.30 1 8 5 40.0 12.00 0.27 1 8 2 16.0 4.32 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 Exempt Glazed Fenestration (15 sq. ft. max.) Bonus - Pic M. Bed - Sl Bed #2 - Sl Bath - Sh Utility - Sl Bonus - Sl Bonus - Pic Bonus - Sl Bed #3 - Sl M. Bath - Sl M. Bath - Pic M. Bath - Pic M. Bed - Pic Flex Rm - Sl Flex Rm - Pic Open - Pic Open - Pic Kitchen - Door Family - Sl Family - Pic Family - Sl Family - Pic WHP311 Burnstead Const. LLC 11980 NE 24th Street, Suite 200 Bellevue, WA 98005 Entry - Pic Dining Rm - Csmt Kitchen - Sl 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 Sum of Vertical Fenestration Area and UA 564.3 163.91 Vertical Fenestration Area Weighted U = UA/Area 0.29 Overhead Glazing (Skylights) Component Width Height Description Ref. U-factor Qt. Feet Inch Feet Inch Area UA 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 0.0 0.00 Sum of Overhead Glazing Area and UA 0.0 0.00 Overhead Glazing Area Weighted U = UA/Area 0.00 597.7 174.58Total Sum of Fenestration Area and UA (for heating system sizing calculations) Simple Heating System Size: Washington State Project Information Contact Information Heating System Type: To see detailed instructions for each section, place your cursor on the word "Instructions". Design Temperature Instructions Design Temperature Difference (∆T) 46 ∆T = Indoor (70 degrees) - Outdoor Design Temp Area of Building Conditioned Floor Area Instructions Conditioned Floor Area (sq ft) 2,874 Average Ceiling Height Conditioned Volume Instructions Average Ceiling Height (ft) 9.0 25,866 Glazing and Doors U-Factor X Area = UA Instructions 0.30 598 179.40 Skylights U-Factor X Area = UA Instructions 0.50 --- Insulation Attic U-Factor X Area = UA Instructions 0.026 1,734 45.08 Single Rafter or Joist Vaulted Ceilings U-Factor X Area UA Instructions No selection --- Above Grade Walls (see Figure 1)U-Factor X Area UA Instructions No selection 2,606 ________ Floors U-Factor X Area UA Instructions No selection 1,734 ________ Below Grade Walls (see Figure 1)U-Factor X Area UA Instructions No selection --- Slab Below Grade (see Figure 1)F-Factor X Length UA Instructions No selection --- Slab on Grade (see Figure 1)F-Factor X Length UA Instructions No selection --- Location of Ducts Instructions Duct Leakage Coefficient 1.10 Sum of UA 224.48 Envelope Heat Load 10,326 Btu / Hour Sum of UA X ∆T Air Leakage Heat Load 12,850 Btu / Hour Volume X 0.6 X ∆T X .018 Building Design Heat Load 23,176 Btu / Hour Air Leakage + Envelope Heat Loss Building and Duct Heat Load 25,494 Btu / Hour Ducts in unconditioned space: Sum of Building Heat Loss X 1.10 Ducts in conditioned space: Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 35,692 Btu / Hour Building and Duct Heat Loss X 1.40 for Forced Air Furnace Building and Duct Heat Loss X 1.25 for Heat Pump This heating system sizing calculator is based on the Prescriptive Requirements of the 2015 Washington State Energy Code (WSEC) and ACCA Manuals J and S. This calculator will calculate heating loads only. ACCA procedures for sizing cooling systems should be used to determine cooling loads. The glazing (window) and door portion of this calculator assumes the installed glazing and door products have an area weighted average U-factor of 0.30. The incorporated insulation requirements are the minimum prescriptive amounts specified by the 2015 WSEC. Please fill out all of the green drop-downs and boxes that are applicable to your project. As you make selections in the drop-downs for each section, some values will be calculated for you. If you do not see the selection you need in the drop-down options, please call the WSU Energy Extension Program at (360) 956-2042 for assistance. WHP311 Burnstead Const. LLC 11980 NE 24th Street Bellevue, WA 98005 Above Grade Below Grade Figure 1. All Other Systems Heat Pump (07/01/13)