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STATE ENERGY CODE REQUIREMENTS - (PERSCRIPTIVE) F. A
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<br /> .E 2.1.1: INSULATION AND FEN STRATION pecificInsulation requirements Prescdptive) . In addition to the requirements of Section R402.4.1.2 Testing. The building or dwelling unit shall be tested and verified as having an 2. Rough-in test: Total leakage shall be less than or equal to 4 cfm (113.3
<br /> 40NTS BY COMPONENT REVISED AS PER R402.1, insulation shall meet the specific requirements of Sections R402.2.1 through air leakage rate of not exceeding 5 air changes per hour. Testing shall be conducted L/min)per 100 square feet (9.29 m2) of conditioned floor area when tested at a v_
<br /> 8402.2.12. with a blower door atapressure of 0.2 inches w.
<br /> OPTION 1 ag. (50 Pascals). Where required by pressure differential of
<br /> _IMATE ZONE 4 the code official, testing shall be conducted by an approved third party. A written 0.1 Inches w.
<br /> ceilings with attic spaces. When Section R402.1.1 would require R-38 in the ceiling, R-30 report of the results of the test shall be signed bythepartyconductingthe test 9 registers(25 Pa) acrossllbe the system, including g al the manufacturer'srgthe air handler
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<br /> STRATION U-FACTOR 0.30 0.28 shall be deemed to satisfy the requirement for R-38 wherever the full height of and provided to the code official. Testing shall be erfored t anytimafter handlerris not intshall timeeeo or the test, total leakagelea during test. If the air
<br /> - uncompressed R-30 insulation extends over the wall top plate at the eaves. Similarly, creation of all penetrations of the building thermal envelope. Once isual inspection handler(s installed at the of test, shall be less than ror
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<br /> R-38 shall be deemed to satisfy the requirement for R-49 wherever the full height equal to 3 cfm (85 L/min)per 100 square feet(9.29 m2) of conditioned floor area.
<br /> _IGHT U-FACTOR 0.50 has confirmed sealing (see Table R402.4.1.1), operable windows and doors
<br /> of uncompressed R-38 insulation extends over the wall top plate at the eaves. This manufactured by small business shall be permitted to be sealed off at the frame0
<br /> reduction shall not apply to the U-factor alternative approach In Section R402.1.3 prior to the test. Exception: The total leakage test is not required for ducts and air handlers located 8
<br /> ?ED FENESTRATION SHGC NR and the total UA alternative in Section 8402.1.4. entirely within the building thermal envelope. Ducts located in crawl spaces do not
<br /> During testing: qualify for this exception.
<br /> R4022.1.1 Loose insulation in attic spaces. Open-blown or poured loose fill insulation may be 1. Exterior windows and doors, fireplace and stove doors shall be closed,but not
<br /> TNO R-VALUE 49 used In attic spaces where the slope of the ceiling is not more than 3 feet in 12 sealed, beyond the intended weatherstripping or other infiltration control measures; .2.2.1 led air handler.Air handlers shall have a manufacturer's designation for an
<br /> and there is at least 30 inches of clearair
<br /> distance from the top of the bottom chord 2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall air leakagea of no more than 2 percent of the design air flow rate when tested in
<br /> D FRAMED WALL R-VALUE 21 INT
<br /> of the truss or ceiling joist to the underside of the sheathing at the roof ridge. be closed, but not sealed beyond intended infiltration control measures; P accordance with ASHRAE 193.
<br /> Ra02.2.3 Eave baffle. For air permeable 3. Interior doors, if installed at the time of the test, shall be open, access hatches 8403.2.3 Building cavities I Mandat _
<br /> to conditioned crawl spaces and conditioned attics shall be open; °M. Building framing cavities shall not be used as ducts
<br /> S WALL R-VALUE 21/21 insulations in vented attics, a baffle shall be installed adjacent to soffit and cave 4. Exterior openings for continuous ventilation systems and heat recovery or plenums. Installation of ducts in exterior walls, floors or ceilings shall not displace
<br /> vents. Baffles shall maintain an opening equal or greater than the size of the vent. ventilators shall be closed and sealed; required envelope insulation. z
<br /> The baffle shall extend over the to of the attic Insulation. The baffle shall be m
<br /> P 5. Heating and cooling systems, if installed at the time of the test, shall be
<br /> )R R-VALUE R-30 R-38 permitted to be any solid material. turned off; and R403.3 Mechanical system piping insulation (Mandato y). Mechanical system piping capable of
<br /> 6. Supply and return registers, if installed at the time of the test, shall be full carrying fluids above 705E(41'C) or below 557(13'C)shall be insulated to a
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<br /> )W GRADE WALL R-VALUE 10/15/21 INT +TB R402.2A Access hatches and doors. Access doors from conditioned spaces to unconditioned open. minimum of R-6. (n
<br /> spaces(e.g., attics and crawl spaces)shall be weatherstripped and insulated to a
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<br /> level equivalent to the insulation on the surrounding surfaces. Access shall be 8402.42 Fireplaces. New wood-burning fireplaces shall have tight-fitting flue dampers R403.3.1 Protection of piping insulation.Piping Insulation exposed to weather shall be m
<br /> protected R-VALUE AND DEPTH 10, 2FT provided to all equipment that prevents damaging or compressing the insulation. A and outdoor combustion air. protected from damage, including that caused by sunlight, moisture, equipment
<br /> wood framed or equivalent baffle or retainer is required to be provided when loose fill maintenance, and wind, and shall provide shielding from solar radiation that can C/)
<br /> insulation is installed, the purpose of which is to prevent the loose fill insulation from R402.4.3 Air leakage of fenestration. Windows, skylights and sliding glass doors shall have an cause degradation of the material. Adhesive tape shall not be permitted. Cl)
<br /> spilling into the living space when the attic access is opened, and to provide a air Infiltration rate of no more than 0.3 cfm per square foot(1.5 L/s/m2), and 0
<br /> section 8406.2 Addtional energy efficiency requirements(Mandatory4 - Each dwelling unit in one- permanent means of maintaining the installed R-value of the loose fill insulation. swinging doors no more than 0.5 cfm per square foot(2.6 L/s/m2), when tested R403.4 Service hot water systems. Energy conservation measures for service hot water
<br /> and two-family dwellings and townhouses, as defined by the IRC, shall comply with according to NFRC 400 or AAMA/WDMA/CSA 101/I.S.2/A440 by an accredited, systems shall be in accordance with Sections 8403.4.1 and 8403.4.2.
<br /> R402.2.5Masswalla Mass walls for the purposes of this chapter shall be considered
<br /> sufficient options from Table R406.2 so as to achieve the following minimum credits: independent laboratory and listed and labeled by the manufacturer. R403.4.1 Circulatingsystems ( ry). Circulating hot water systems shall be
<br /> 1. Small Dwelling Unit: 0.5 points above-grade walls of concrete block, concrete, insulated concrete form (ICF), hat waterMandato m
<br /> 2. Medium Dwelling Unit: 1.5 points masonry cavity, brick(other than brick veneer), earth (adobe, compressed earth Exceptions: provided with an automatic or readily accessible manual switch that can turn off the LD
<br /> 3. Large Dwelling Unit: 2.5 points block, rammed earth)and solid timber/logs. 1. Field-fabricated fenestration products hot water circulating pump when the system is not In use. C .�
<br /> (windows, skylights and doors). 8403.4.2 Hot water pipe0 m O 73
<br /> This project Is a Medium Dwelling Unit and will incorporate the following options to achieve a 1.5 point credit: 8402.2.6 Steel-frame ceilings,walls,and floors. Steel-frame ceilings, walls, and floors shall 2. Custom exterior fenestrationproducts manufactured bya small business provided Insulation (Prescdptive) .Insulation for hot water pipe shall have a i1 'A 1�
<br /> meet the U-factor requirements of Table R402.1.3. minimum 4mum thermal resistance(R-value) of ♦/ m i° 0
<br /> they meet the applicable provisions of Chapter 24 of the International Building Code.
<br /> ta-EFFICIENT BUILDING ENVELOPE-R-38 FLOOR INSULATION R402.2.7 Floors. Floor insulation shall be installed to maintainpermanent contact with 3. Custom exterior windows and doors manufactured by a small business provided
<br /> 3a-HIGH EFFICIENCY HVAC EQUIPMENT-AFUE 95% they meet the applicable provisions of chapter 24 of the International Building Code. 8403.4.3 Electric water heater insulation. All electric water heaters in unheated spaces or on
<br /> 3e-EFFICIENT WATER HEATING-MIN.EF 0.62 the underside of the subfloor decking. Insulation supports shall be installed so Once visual inspection has confirmed the presence of a gasket, operable windows and concrete floors shall be placed on an incompressible, Insulated surface with a O to Ca
<br /> spacing is no more than 24-inches on center. Foundation vents shall be placed so doors manufactured by small business shall be permitted to be sealed off at the ,i
<br /> minimum thermal resistance of R-10. O D co" -
<br /> that the top of the vent is below the lower surface of the floor insulation, frame prior to the test. CO
<br /> R403.5 Mechanical ventilation (Mandatory). The building shall be provided with ventilation N W
<br /> Exceptions: R402.4.4 Recessed lighting. Recessed luminaires Installed to the building thermal envelope that meets the requirements of the International Residential Code or International if,
<br /> 1. When foundation vents are not placed so shall be Type IC-rated and certified under ASTM E283 as having an air leakage rate Mechanical Code, asapplicable, or with other roved means of ventilation. Outdoor O O
<br /> "ERTIFICATE- Apermanent certificate shall be completed andposted on or within that the top of the vent Is below the lower surface of the floor insulation, a app 7j_jf
<br /> three feet of the lectrical distribution anal. P permanentlyangle of 30'from horizontal, to not more than 2.0 l frn(0.944 L/s)when tested at a 1.57 p (75 Pa) pressure air intakes and exhausts shall have automatic or gravity dampers that close when • O = inn
<br /> ermanentl attached baffle shall be installed at an showing compliancethe ventilation system is not operating. O co
<br /> Pdifferential and shall have a label attached gas with this test method.
<br /> divert air flow below the lower surface of the floor insulation. All recessed luminaires shall be sealed with a gasket or caulk between the housing "�
<br /> 2. Substantial contact with the surface being insulated is not required in enclosed 0 Z
<br /> and the interior wail or ceiling covering. 8403.5.1 Whole-house mechanical ventilations stem fan TableMechanical ventilations tem ^ -
<br /> Additions,alterations,renovations or repairs. Additions, alterations, renovations or repairs to an floor/ceiling contact
<br /> containing ducts where full la value insulation is Installed y efficacy. system 0 Y/ = w
<br /> fans shall meet the efficacy requirements of Table R403.5.1. O o .o
<br /> existing building, building system or portion thereof shall conform to the provisions of between the duct and the exterior surface. R402.5 Maximum fenestration U-factor and SHGC(Mandatory). The area-weighted average Exception: Where mechanical ventilation fans are integral to tested and listed HVAC CO
<br /> this code as they relate to new construction without requiring the unaltered maximum fenestration U-factor permitted using tradeoffs from Section R402.1.4 or equipment, shall bepowered byan electronicallyr
<br /> zortion s of the existingbuildingor buildingsystem to comply with this code. 8402.2.8 Basement walls. Below-grade exterior wall insulation used on the exterior (cold) they O O r
<br /> () Ys P Y R405 verb be 0.48ner in ClimatenZones 4 and 5 and 0.4-0s4 in Climate 8 Zones 6 through commutated motor. D
<br /> 4dditlons, alterations, renovations or repairs shall not create an unsafe or hazardous side of the wall shall extend from the top of the below-grade wall to the top of the 8 far vertical fenestration, and 0.75 in Climate Zones 4 through 8 for skylights. The rn
<br /> condition or overload existing building systems. An addition shall be deemed to footing and shall be approved for below-grade use. Above-grade insulation shall be area-weighted average maximum fenestration SHGC permitted using tradeoffs from n
<br /> comply with this code if the addition alone complies or if the existing building and protected. Insulation used on the interior(warm)side of the wall shall extend from Section R405 in Climate Zones 1 through 3 shall be 0.50. TABLE R403.5.1-MECHANICAL VENTILATION SYSTEM EFFICACY O lir
<br /> zddition comply with this code as a single building. the top of the below-grade wall to the below-grade floor level and shall include R-5 I% m
<br /> :xce tion: The followingneed not comply provided the energyuse of the buildingIs rigid board providinga thermal break between the concrete wall and the slab. SECTION 8403 FAN LOCATION AIR FLOW RATE MIN. (CFM) MIN.EFFICACY (CFMIWATT) AIR FLOW RATE MAX. (CF 0 N
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<br /> tot increased: SYSTEMS RANGE HOODS ANY 2.8 CFM/WATT ANY 0 0 C
<br /> I. Storm windows installed over existing fenestration. 8402.2.9 Slab-on-grade floors. The minimum thermal resistance(R-value)of the insulation IN-UNE FANSO '� C
<br /> ?. Glass only replacements in an existing sash and frame. around the perimeter of unheated or heated ANY 2.84 CFM/WATT ANY co
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<br /> heatin Controls nasyst mt least one thermostat shall be provided for each separate BATHROOM, UTIUIY ROOM 10
<br /> S. Existing ceiling, wall or floor cavities exposed during construction provided that slab-on-grade floors shall be as specified in Table R402.1.1. The insulation shall be heating and cooling system. 1.4 CFM/WATT <90 N
<br /> :hese placed on the outside of the foundation or on the inside of the foundation wail. The BATHROOM, UTILITY ROOM 90 2.8 CFM/WATT ANY C
<br /> :avitles are filled with insulation. 2x4 framed walls shall be insulated to a minimum insulation shall extend R403.1.1 Programmable thermostat Where the primary heating system is a forced-air
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<br /> tf R-15 and 2x6 framed walls shall be insulated to a minimum of R-21. downward from the top of the slab for a minimum distance as shown in the table or furnace, at least one thermostat per dwelling unit shall be capable of controlling the
<br /> I. Construction where the existing roof, wall or floor cavity is not exposed. to the top of the heating and cooling system on a daily schedule to maintain different temperature set R403.6 Equipment sizing(Mandatory) .Heating and cooling equipment shall be sized in 0
<br /> I. Reroofing for roofs where neither the sheathing nor the insulation is exposed. footing, whichever is less, or downward to at least points at different times of the day. The thermostat shall allow for, at a minimum, a accordance with ACCA Manual S based on building loads calculated in accordance O
<br /> loafs without insulation in the cavity and where the sheathing or insulation is the bottom of the slab and then horizontally to the interior or exterior for the total 5-2 programmable schedule(weekdays/weekends) and be capable of providing at approvedheating g g O
<br /> reposed duringreroofingshall be insulated either above or below the sheathing. with ACCA Manual J or other and cooling calculation methodologies.
<br /> P 9 distance shown in the table. A two-Inchedby two-inch (maximum) pressure treated least two programmable setback periods per day. This thermostat shall include the CO
<br /> I. Replacement of existing doors that separate conditioned space from the exterior nailer may be placed at the finished floor elevation for attachment of interior finish capability to set back or temporarily operate the system to maintain zone R403.7Systemsservingmultipledwellingunits(Mandatory) .Systems serving multiple dwellingO
<br /> (hall not require the Installation of a vestibule or revolving door, provided, however, materials. Insulation extending away from the building shall be protected by pavement temperatures down to 557(13'C) or up to 857(29'C). The thermostat shall initially units shall comply with Sections C403 and C404 of the IECC--Commercial Provisins N
<br /> hat an existing vestibule that separates a conditioned space from the exterior shall or by a minimum of 10 inches(254 mm) of soil. be programmed with a heatingtemperature setpoint no higher than 70F 21'C and in lieu of Section R403.
<br /> tot be removed. P 9 p g ( )
<br /> R402.2.9.1 Heated slabon rade floors a cooling temperature set point no lower than 78'F(26-C). The thermostat and/or
<br /> Alterations that replace less than 60 percent of the luminaires in a space, control system shall have an adjustable deadband of not less than 10'F. 8403.8 Snow melt system serviccontrols (Mandatory) .Snow and Ice-melting systems, supplied
<br /> r (Mandatory). The entire area of a heated Exceptions: through energyservice to the building,
<br /> irovtded that such alterations do not increase the installed interior lighting power. P shall tautomatic controls capable of
<br /> I. Alterations that replace only the bulb and ballast within the existing luminaires slab-on-grade floor shall be thermally isolated from the soil with a minimum of 1. Systems controlled by an occupant sensor that is capable of shutting the shutting off the systemg when the pavement temperaturenualis abovet and no
<br /> to
<br /> R-10 Insulation. system precipitationhnis oand an automaticis or manual control that will allow shutoff
<br /> 1 a space provided that the alteration does not increase the installed interior lis em off when no occupant is sensed for a period of up to 30 minutes. 9
<br /> ghting power. The insulation shall be an approved product for Its 2. Systems controlled solely by a manually operated timer capable of operating the when the outdoor temperature is above 40'F.
<br /> intended use. If a soil gas control system is present below the heated slab-on-grade system
<br /> The building official may approve designs of alterations or repairs which do not lis am for no more than two hours.
<br /> ally conform with all of the regpnefnents of this code where in Me opinion of the floor, which results in increased convective flow below the heated slab-on-grade pR403.9ermanently
<br /> Pools and tall and permanently installed spas (Mandatory) .Pools and In-groundgh N gm
<br /> floor, the heated ermanentlyO
<br /> .uilding official full compliance Is physically impossible and/or economically impractical slab-on-grade floor shall be thermally isolated from the sub-slab gravel layer. R-10 840ude Heatpumpthat supplementarymiheats (plemental heat
<br /> usage cooled heat pumps shall P Heat installed spas shall be equipped with Sectionsithreadily a accessible 1 b -off switc a m
<br /> Ind: include controls minimize supplemental heat usage during start-up, set pre and
<br /> The alteration or repair Improves the energy efficiency of the building; or heated defrost conditions. These controls shall anticipate need for heat and use compression that Is mount.All heaters sthe he totoa with a ingo eat on-off switch O-!
<br /> i. The alteration or repair is energy efficient and Is necessary for the health, slab-on-grade floor insulation is required for all compliance paths. heating as the first stage of heat. Controls shall indicate when supplemental heating that is mounted outside of the heater to allow shutting off the heater without r m
<br /> adjusting the thermostat setting. Gas-fired heaters shall not be equipped with o o
<br /> afety, and welfare of the general public. R402.2.11 Masonry veneer. Insulation shall not be required on the horizontal portion of is being used through visual means(e.g., LED Indicators). Heat pumps equipped with constant burning pilot lights. _ =y
<br /> the foundation that supports a masonry veneer. supplementary heaters shall be installed with controls that prevent supplemental z 3 M
<br /> lechanical systems.When a space-conditioning system is altered by the installation or heater operation above 40'F. At final inspection the auxiliary heat lock out control R403.9.2 Time switches.Time switches or other control method that can automaticall 0� ami�
<br /> eplacement of space-conditioning the air shall be set to 357 or less. Y -i p m
<br /> plaandler, outdoor pacoceecong unit of a split equipment(includingncl air conditioner replacementoof heat pump,ir8402.3 Fenestration(Prescriptive). In addition to turn off and on heaters and pumps according to a preset schedule shall be installed o z o
<br /> the requirements of Section R402, fenestration shall comply with Sections R402.3.1 R403.2 Ducts. Ducts and air handlers shall be In accordance with Sections R403.2.1 on all heaters and pumps. Heaters, pumps and motors that have built in timers shall z
<br /> ooling or heating coil, or the furnace heat exchanger), the duct system that is through 8402.3.6. through R403.2.3. be deemed In compliance with this requirement.
<br /> onnected to the new or replacement 9 Exceptions:
<br /> pace-conditioning equipment shall be tested as specified in WSU RS-33. The test R402.3.1 U-factor. An area-weighted average of fenestration products shall be permitted 1. Where public health standards require
<br /> esults shall be provided to the buildingofficial and the homeowner. R403.2.1 Insulation(Prescdptive). Ducts shall be Insulated to o minimum of R-8. q
<br /> to satisfy the U-factor requirements. 24-hour pump operation.
<br /> xceptions: 2. Where pumps are required to operate solar- and waste-heat-recovery pool
<br /> Duct systems that are documented to have been previously sealed as confirmed R402.3.2 Glazed fenestration SHGC. An Exception Ducts or portions thereof located completely inside the building thermal heating systems.
<br /> Trough field verification and diagnostic testing In accordance with procedures in WSU area-weighted average of fenestration products more than 50 percent glazed shall be envelope. Ducts located in crawl spaces do not qualify for this exception.
<br /> S-33. permitted to satisfy the SHGC requirements. R403.9.3 Covers.witrs.Heated pools and in-ground permanently installed spas shall be
<br /> . Ducts with less than 40 linear feet in unconditioned spaces. R403.2.2 Seating ish(Mandatory). Ducts, air handlers, and filter boxes shall be sealed. Joints provided with a vapor-retardant cover.
<br /> Existing duct systems constructed, Insulated R402.3.3Glazedfenestrationexem tion Upto and seams shall comply with either the International Mechanical Code or international
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<br /> r sealed with asbestos. PException: Pools deriving over 70 percent of the energy for heating from
<br /> Residential Code, as applicable.
<br /> . Additions of less than 750 square feet. 15 square mp feet U act of glazed fenestration per dwellingcunit shall. be permitted to site-recovered energy, such as a heat pump or solar energy source computed over
<br /> be exempt from U-factor and SHGC requirements In Section 8402.1.1. This exemption an operating season.
<br /> Exceptions: `4
<br /> shall not apply to the U-factor alternative approach In Section R402.1.3 and the 1i>mD .Z1
<br /> hangeInoccupancyoruse. Any space not within the scope of Section R101.2 which is a Air-impermeablen ls. spray foam products shall be permitted to be applied without dential pe Pool r"o_
<br /> total UA alternative in Section 8402.1.4. additional jointpoolp ps pump motors may not be split-phase or capacitor '�' A g-
<br /> 8403.9.4
<br /> onverted to space that is within the scope of Section R101.2 shall be brought Into seals. start-Induction run type. o? tp
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<br /> Where a duct connection is made that is inaccessible, three screws or Vo>
<br /> SII compliance with this code. R402.3.4Opaque door exemption One side-hinged opaque door assembly up to 24 square2partially
<br /> Spaces undergoing a change in occupancy that would result in an Increase in shall be equally spaced on the exposed portion of the joint so as to prevent a Ra03.s.4.i Two-speed
<br /> feet(2.22 m2) in area is exempted from the U-factor requirement in Section hinge capability, r;,y
<br /> errand for either fossil fuel or electrical energy shall comply with this code. effect.
<br /> R402.1.1. This exemption shall not I to the U-factor alternative approach In 1. Pump motors: Pool pump motors with a capacity of 1 hp or more shall have Sc'`m
<br /> P apply PP3. Continuously welded and locking-type longitudinal joints and seams in ducts � ---the capability of operating °"
<br /> Section 8402.1.3 and the total UA alternative in Section R402.1.4. aP Y at two or more speeds with low speed having a rotation D •
<br /> hangs In space conditioning. Any nonconditioned space that is altered to become operating at static pressures less than 2 inches of water column (500 Pa)pressure rate that Is no more than one-half of the motor's maximum rotation rate. m. (7
<br /> onditioned space shall be required to be brought into full compliance with this code.
<br /> 8402.3.5 Reserved. classification shall not require additional closure systems. Ducts shall be leak tested 2. Pump controls: Pod pump motor controls shall have the capability of operating �,D
<br /> R402.3.s Replacement fenestration. Where some or all of an existing fenestration unit Is In accordance with WSU RS-33, using the maximum duct leakage rates specified. 1 the pool pump with at least two speeds. The default circulation speed shall be the B
<br /> 9 Duct tightness shall be verified byeither of the following: 8
<br /> replaced with a new fenestration product, including sash and glazing, the replacement 9 9' lowest speed, with a high speed override
<br /> Ixed occupancy. Where a building Includes both residential and commercial occupancies, fenestration unit shall meet the applicable requirements for U-factor and SHGC In 1. Postconstruction test: Total leakage shall be less than or equal to 4 cfm capability being for a temporary period not to exceed one normal cycle. > O
<br /> Table R402.1.1.
<br /> bre occupancy shall be separately considered and meet the applicable provisions of (113.3 L/min)per CO
<br /> / ) circul.a.2Pumpoperstion.Circulating water systems shall be controlled so that the o
<br /> re IECC- Commercial 100 Square feet(9.29 m2)of conditioned circulation pump(s)8402.4 Air leakage (Mandatory). The building thermal envelope shall be constructed to floor area when tested atapressure differential of 0.1 Inches w. (25 Pa) across the waters tem is not in operation. JULY 8,2013
<br /> nd Residential Provisions. ` p p()can be conveniently turned off, automatically or manually, when
<br /> limit air leakage in accordance with the requirements of Sections 8402.4.1 throughg. lis
<br /> ompllance. Residential buildings shall meet the provisions of IECC- Residential 8402.4.4. the entire system, including the manufacturer's air handier enclosure. All register
<br /> boots shall be taped or otherwise sealed during the test. Leakage to outdoors shallbe less than or equal to 4 cfm (133.3 SECTION R404 t/y
<br /> rovlslons. Commercial buildings shall meet the provisions of IECC- Commercial 8402.4.1 Building thermal envelope. The building thermal envelope shall comply with Sections
<br /> rovlslons. R402.4.1.1 and R402.4.1.2. The sealing methods between dissimilar materials shall L/min) per 100 square feet of conditioned floor area. ELECTRICAL POWER AND LIGHTING SYSTEMS 12.,
<br /> allow for differential expansion and contraction. -
<br /> tw energy buildings The followina bulldinas. or portions thereof, separated from the " oT 'cc �,
<br />
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