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<br /> I - ��S�C���1t1�� Ei��r�/ ���������+��1 �O�"k�h��� . Additional Energy Efficiency Requirements ' `'
<br /> I Per Table R406.2 of the Washington State Energy Code,each dwelling unit in a residential building must achieve the following
<br /> i I i ' WIIOIe-HOUSC' VCt1tII��90t1 minimum number of credits.
<br /> i Select one of the following methods. i, Credits Re uired
<br /> Type/Description p
<br /> i I �I '� A. Fresh air will be circulated by the_central forced air furnace.The fulmace must have afresh air intake duct and the blower Small DweEling Unit . 1.5 credits
<br /> ,i must be activated by a timer to circulate air a total of 8 hour'sdai►y. . pwelling units less than 1500 square feet in conditioned floor area with less than 300 square feet of
<br /> i ❑ B. Fresh air wifl be supplied by wal!or window vent ports in each bediroom, kitchen, living room and ather habitable rooms fenestration area.
<br /> I il along with a whote-house exhaust fan.The exhaust fan,which usually does double duty as a(aundry or bathroom fan, and must • Additions to existing buiiding more than 500 square feet of heated itoor area but tess than 1500 square feet. `
<br /> ' I I I be controlled by a timer set to operate according to the fan sizes and�lt{me scheclules below.The table below assumes a Medium Dwelling Unit 3.5 cre its . ,
<br /> I residence of 3000 square feet or less. I
<br /> - �..
<br /> i I � Uwelling units with more than 1500 sq ft and less than 5000 sq ft of conditioned floor area ; •
<br /> �i : � � � � p � , � � y ` � Additions to existing building with 1500 square feet or more of heated floor area. �: :-
<br /> !, Continuous O eration 12 Hours Da
<br /> ! � I :.... . . .. .. . _ _: �
<br /> , � I I ` 1 bedroom : 45 cfm 90 cfm � Exception: Dwelling units serving R-2 occupancies require 2.5 credits.
<br /> I I I� 2-3 bedrooms � 60 cfm ' 120 cfm g 4S credits
<br /> Large Dwellin Unit
<br /> I � I � �
<br /> 4-5 bedrooms 75 cfm ' 150 cfm s Uwelfing units with 5000 square feet or more of conditioned floor area.
<br /> �� : .. _.. ;. ...... .
<br /> 'I Exception: Dweliing units serving R-2 occupancies require 2S credits.
<br /> � II ❑ C.A heat-recovery ventilation system with minimum CFM flow rates as shown in option B.
<br /> Additions of 500 square feet or fess 0.5 credits "
<br /> �� � Source-Specific Exhaust Ventilatian & Fan Efficiency
<br /> i f
<br /> I � Required in each kitchen, bathroom,water doset compartment, laundry loom, indoor swimming pool,spa and other rooms where The failowing options are commonly chosen to achieve the required number of credits.See section R406 for compiete list of
<br /> i water vapor or cooking odor is produced. (IRC M-1507.4) Fan efficiency from WAC 51-11R—Table R403.6.1. options.
<br /> i i � • �ption 3a (1.0 Credits}—A gas, propane or oil-fired furnace with a min AFUE of 94%. �
<br /> Minimum Source-Specific Ventilation Capacity Requirements • 0 tion 3 1.0 Cre its —Uuctless Sp it System Heat Pump ocate in t e mam zone o t e addition. i
<br /> Bathrooms—Utility Rooms Ki#chens In-line fan p< o Option 5a(0.5 Credits -All new s owerhea an kitchen sink faucets rate at 1J5 GPM or ess an a new avatory
<br /> I ' Intermittently operating 50 cfm lOQ cfm I faucets rated .
<br /> ' j I!, • OpCion 5b(1A Credits)—A gas, propane or oil-fired water heater with a min EF of 0.74. .
<br /> � I � Continuous operation 20 cfm 25 cfm
<br /> ' ; , • Option Sc{2.5 Credits)—A gas,propane or oil-fired water heater with a min EF of 0.91
<br /> I I Air Flow Rate Minimum(cfm) 10 90 An;y I Any
<br /> i � I'I Minimum Efficacy(cfm/watt} 1.4 cfm/watt 2.8 cfm/watt 2.8 cfm/watt z.s cfrr�/�Natt The drawings included with the building permit application shall identify which options have been selected and the paint value of ,
<br /> I� � I Air Flow Rate Maximum{cfm) > o Any Any I Any each option, regardfess of whether separate mechanical, plumbing,electrical, or other permits are utilized for the project.
<br /> I I' II'
<br /> I • � �ther Code Requirements
<br /> ' I I ' li1SU��$IOn atld 1�11 C1dOWS , Section 502.4.5 of the Energy Code requires that the building envelope be tested(normal(y referred to as a"blower door test")to ,
<br /> I, I� � 'I
<br /> I I Prescriptive energy code compfiance for Climate Zone Marine 4: i determine that air leakage is within acceptable levels.A feakage of.00030 S!A measured at 50 pascals is considered acceptable.
<br /> I I Sealing of doors,windows,ducts or registers is not allowed during testing.
<br /> i i Fenestration x Ceiling Vaulted Wood Framed Mass Wall Below-Grade Framed Slab R-Value
<br /> j 'I - w/attic ceiling wa11(int.)z (Above gradej walt z� Floor &Depth Section 503.10.2 requires leakage testing of the mechanical ducts to insure that the ducts are sealed.Testing may occur at rough-in
<br /> Component Vertical Overhead
<br /> , or post-construction.Testing must comply with standard RS-33. lndividua{s performing the test must be approved or certified by the
<br /> ' I� I �'I � Prescriptive U.0.30 U.0.50 R-49 R-38 R-21 min. �I R-21 min. R-10/15/21 R-30 R-10 min. Washington State University Energy Office or approved other agency. .
<br /> II Value max. max. min. min. � Int.+TS min. 2'depth o
<br /> I Section 505.7.requires that 75/of all luminaires(lights andlamps) be high efficiency.
<br /> 1.Fenestrationisdefinedasskylights,roofwindovrs,verticalwindows(fixed ormo'veablej,oPllaquedoors,glazeddoors,glazedblockandcombination opague/glazed Section 105.4 requires that a certificate be poste�within three feet of the electricaf panel,completed by the builder or design �
<br /> I � doors.Fenestrationincludesproductswithgtassandnon-glassglazingmaterials. �
<br /> Iz.Int.(intermediateframing)denotesstandard4ramingl6"o.c.withheadersinsulatedwithalminimumR-loinsulation. professional,and include the folfowing information. ft-values for ceiling,walls,floorS,foundation,U-factors for windows,the type
<br /> �I I 3."1OJ15/21+T8"means R-10 continuous insulation on the exterior of the wafl,or R-is on the continuous insufation on the interior of the wall,or R-z1 cavity and efficiency of heating/cooling equipment,duct leakage rates from the duct testing,and the air leakage rates from the blower
<br /> I I insulation plus a thermal break between the slab and the basement wal{at the interior of the basement walL"10/15/21+TB"shall be permitted to Be met with R-23 door testing.A certificate will be provided for your use at time of permit issuance. ' ��
<br /> i �, caviky insulation on the interior of the basement wall plus R-5 continuous insulation on tfie�l interior or exterior of the wall."TB"means thermaf break between floor �
<br /> I slab and basement walL
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<br /> � I ' 7172 BU�TLER H1LL RD � ,
<br /> HOWARQ F, PATTEf�SON �:��
<br /> I A.l.B.D. (� C.S.D.0. �
<br /> BURLINGTON WA:_98233 • ''.:_r;,
<br /> i �I �q�p�' ,360 7�7 O.fi85� '�� '
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