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GENERAL NOTES
<br />CONTRACTOR SHALL VERIFY ALL SITE CONDITIONS AND DIMENSIONS
<br />PRIOR TO COMMENCING THE WORK,
<br />WORK SHALL COMPLY WITH THE FOLLOWING CODES:
<br />2015 INTERNATIONAL RESIDENTIAL CODE
<br />2015 WASHINGTON ENERGY CODE
<br />OTHER CODES APPLICABLE BY JURISDICTION,
<br />AIR SEALING:
<br />1. ALL PLUMBING, ELECTRICAL, AND HVAC PENETRATIONS IN FLOOR,
<br />WALLS, AND CEILINGS ARE CAULKED AND SEALED.
<br />2. WHERE PENETRATIONS NEED A FIRESTOP, DISCUSS WITH
<br />BUILDING OFFICIAL,
<br />3. ELECTRICAL OUTLET AND LIGHT SWITCH BOXES ON EXTERIOR
<br />WALLS MUST BE SEALED AT THE BACK OF THE RECEPTACLE OR
<br />SEALED WITH FACEPLATE GASKETS,
<br />4. SEAL RIM JOIST BETWEEN HEATED FLOORS OR USE PRODUCT
<br />LIKE "TYVEK" ON EXTERIOR,
<br />5, VAPOR BARRIER SHALL BE EITHER FACE STAPLED BATTS, 4 MIL.
<br />VISQUEEN OR AN APPROVED VAPOR BARRIER PAINT,
<br />SEPARATION BETWEEN DWELLING AND GARAGE/CARPORT;
<br />a. NO SEPARATION REQUIRED IF ENTIRELY OPEN ON 2 OR MORE
<br />SIDES AND NO ENCLOSED USES, (OPEN DECKS ABOVE ARE OKAY,
<br />NON -RATED WALLS AND OPERABLE WINDOWS BETWEEN THE
<br />DWELLING AND CARPORT ARE OKAYj.
<br />b. MINIMUM 1/2" GWB ON GARAGE/CARPORT SIDE OF WALLS
<br />REQUIRED FOR ALL GARAGES/CARPORTS NOT COVERED BY 1A
<br />ABOVE.
<br />c. 1-HOUR FIRE RATED WALL REQUIRED IF LESS THAN 5 FEET FROM
<br />PROPERTY LINE (NO OPENINGS ALLOWED LESS THAN 3' FROM
<br />PROPERTY LINE 25% MAXIMUM OPENINGS BETWEEN 3' AND 5' TO
<br />PROPERTY LINE). OVERHANGS MUST BE A MINIMUM 2' FROM
<br />PROPERTY LINE, EXCEPT STEEL GUTTER ALLOWED CLOSER AND
<br />5/8" GWB SHEATHING REQUIRED ON UNDERSIDE WHEN 5' OR LESS
<br />FROM PROPERTY LINE,
<br />EGRESS WINDOWS: REQUIRED FOR 1 WINDOW/BEDROOM OR SLEEPING
<br />AREA (BELOW 4TH FLOORI AND 1 WINDOW/BASEMENT
<br />a. MIN, NET CLEAR AREA = 57 SQ. FT,, (MIN, 310" x 416" IF DOUBLE
<br />HUNG OR 4'0" x 316" WINDOW IF SLIDER). 5.0 SQ. FT, IF SILL
<br />HEIGHT IS WITHIN 44" OF GRADE (ABOVE OR BELOW),
<br />b, MIN. NET CLEAR OPENING WIDTH = 2011; MIN. NET CLEAR OPENING
<br />HEIGHT = 24"
<br />C. MAX, SILL HEIGHT = 44" (ONE PERMANENTLY INSTALLED STEP
<br />WITH MAX. 8" RISE AND MIN 9" RUN OKAY FOR EXISTING
<br />BEDROOMS),
<br />REQUIRED GLAZING FOR HABITABLE ROOMS:
<br />a. MIN GLAZED EXTERIOR OPENING AREA = 8X OF FLOOR AREA.
<br />b. GLAZED OPENINGS NOT REQUIRED WHERE PERMANENTLY
<br />INSTALLED ARTIFICIAL LIGHT IS PROVIDED.
<br />c. OK IF OPENINGS ARE BELOW DECK & ROOFED PORCHES w/MIN.
<br />CEILING HEIGHT OF 7 FT. (LONG SIDE 65% OPEN).
<br />MECHANICAL/VENTILATION; REQUIRED FOR HABITABLE ROOMS OF
<br />ADDITIONS AND ALTERATIONS MORE THAN 500 SQ, FT, OR THAT
<br />INCLUDE A KITCHEN, BATHROOM AND OTHER AREA'S WHERE COOKING
<br />ODOR OR EXCESS WATER VAPOR WILL BE PRODUCED.
<br />a. MIN. 50 CFM FOR BATHROOM AND LAUNDRY; MIN. 100 CFM FOR
<br />KITCHEN.
<br />b. MIN. AIR INTAKE OPENINGS = 4 SQ. IN. PER ROOM,
<br />c, WHOLE HOUSE FAN MUST OPERATE AS SPECIFIED IN IRC M1507.3
<br />SMOKE ALARMS: REQUIRED INSIDE AND OUTSIDE OF SLEEPING AREAS
<br />AND ON ALL FLOORS, DIRECT WIRING IS REQUIRED FOR SMOKE
<br />DETECTORS, UNLESS REMOVAL OF INTERIOR WALL OR CEILING FINISHES
<br />IS NECESSARY TO INSTALL THE WIRING
<br />CARBON MONOXIDE ALARMS: REQUIRED OUTSIDE SLEEPING AREAS AND
<br />ON ALL FLOORS, UNLESS WORK ONLY INVOLVES EXTERIOR SURFACES
<br />OF THE BUILDING.
<br />STAIR REQUIREMENTS: (APPLIES TO ALL R-3 STAIRS AND R-2 PRIVATE
<br />STAIRWAYS):
<br />a, MIN. WIDTH = 36"
<br />b, MAX, HEIGHT/RISE = 7-3/4"; MIN. TREAD RUN = 10"
<br />C. MIN, HEADROOM = 6'8"
<br />d. HANDRAIL 34"-38" ABOVE TREAD NOSING (RETURN ENDS)
<br />e, HANDRAIL GRASP DIMENSION: MIN, 1-1/411, MAX. 2"
<br />f. WINDING STAIRS:
<br />1, MIN, TREAD RUN AT NARROWEST POINT = 6"
<br />2. MIN, TREAD RUN 1211 FROM NAORROWEST POINT = 10"
<br />g, SPIRAL STAIRS:
<br />1. MIN. CLEAR WALKING AREA WIDTH = 26"
<br />2, MIN, TREAD RUN 12" FROM NARROWEST POINT 7-1/2" /
<br />MAX. RISER HEIGHT = 9-1/2"
<br />3, MIN. HEADROOM = 6161"
<br />CEILING HEIGHT IN ADDITIONS AND ALTERATIONS:
<br />a. MIN. 7'0": FOR NEW CONSTRUCTION OR ADDITIONS
<br />b. MIN 64": IF BUILDING WAS IN EXISTENCE PRIOR TO 10/17/79 (SEE
<br />DR 23-2008 FOR SPECIFICS).
<br />C. ROOMS WITH SLOPED CEILINGS REQUIRE MINIMUM CEILING HEIGHT
<br />IN 1/2 OF THE AREA, (PORTIONS OF THE ROOM WITH CEILING
<br />HEIGHT LESS THAN 5 FT, DO NOT COUNT IN TOTAL AREA).
<br />INSULATION:
<br />1. FACED BATTS ARE LAPPED AND FACE STAPLED AT FRAMING
<br />MEMBERS,
<br />2. ALL EXTERIOR WALL CAVITIES ARE FILLED WITH UNCOMPRESSED
<br />INSULATION, INCLUDING ALL CAVITIES ISOLATED DURING FRAMING,
<br />WIRING, AND PLUMBING
<br />3. ALL RECESSED FIXTURES IN EXTERIOR WALLS HAVE RIGID BOARD
<br />INSULATION BEHIND THEM
<br />4. UNDERFLOOR INSULATION IS SUPPORTED BY LATH, TWINE, OR
<br />OTHER NON -COMPRESSING MEANS,
<br />5, ATTIC ACCESS IS BAFFLED, WEATHER-STRIPPED AND INSULATED.
<br />FOUNDATION LOCATION, PROPERTY CORNERS MUST BE ACCURATELY
<br />DETERMINED AND INDICATED0 FOR FOUNDATION INSPECTION. A
<br />N SITE
<br />SURVEY MAY BE REQUIRED. FENCE LOCATIONS WILL NOT BE ACCEPTED
<br />AS ESTABLISHING PROPERTY CORNERS,
<br />OTHER REQUIREMENTS:
<br />a. GUARDRAILS: MIN, 36" HT, MAX, 4" SPACING BETWEEN
<br />INTERMEDIATE MEMBERS 142" MIN. HT FOR R-2 EXTERIOR).
<br />b. FOORINGS: BOTTOM MIN. 12" BELOW GRADE, TOP OF FOUNDATION
<br />WALL MIN, 6" ABOVE GRADE
<br />c: CONRETE SLABS ON GRADE; 3-1/2" MIN. THICKNESSES,
<br />d. PIER BLOCKS; MIN. 12" X 12" SIZE; RESTING ON CONCRETE PAD
<br />MIN. 12" BELOW GRADE.
<br />e. FOUNDATION WALLS. PROVIDE ONE 01 #4 REBAR TOP AND BOTTOM
<br />AND AT ALL WINDOWS/DOOR OPENINGS, LIMIT 4' MAX. BACKFILL.
<br />f. FOUNDATION ANCHOR BOLTS, MIN. 1/2" x 10,11 6 FT, ON CENTER
<br />MAX. WITH TWO (2) BOLTS PER PIECE OF PLATE AND AT LEAST
<br />ONE 11) BOLT WITH 12" AT END OF EACH PIECE REQUIRED FOR
<br />NEW CONSTRUCTION).
<br />g, ALL STRUCTURAL SOFTWOOD PLYWOOD, PARTICLE BOARD, WAFER
<br />BOARD, AND OSB BOARD ARE STAMPLED WITH EXPOSURE '1' OR
<br />'EXTERIOR',
<br />h. WATER HEATER STORAGE TANK LABELED AS MEETING 1987 NAT'L
<br />APPLIANCE ENERGY CONSERVATION ACT. ASHRAE STANDARD
<br />9OA-1980 INSULATION TO R-16 OR R-10 PAD IF LOCATED OVER
<br />UNINSULATED SLAB,
<br />i. INSULATE HOT AND COLD WATER PIPES TO R-3 IN UNHEATED
<br />AREAS.
<br />j, SHOWER REGULATOR TO LIMIT HOT WATER DISCHARGE TO 2.5
<br />GPM
<br />k. WOODSTOVES AND FIREPLACES HAVE TIGHT FITING DOORS,
<br />OUTSIDE COMBUSTION AIR DUCTED TO FIREBOX WITH ACCESSIBLE
<br />DAMPER, MIN 6 SQ IN FREE VENT AREA, TIGHT FITTING FLUE
<br />DAMPERS REQ'D.
<br />k ALL GAS AND OIL COMBUSTION APPLIANCES HAVE A DIRECT
<br />VENT OR FORCED DRAFT VENTING.
<br />M. RECESSED LIGHTS ARE I.C, RATED, DOUBLE WALL CAN LIGHTS OR
<br />WITHIN SEALED WPGWB BOX -IN.
<br />n. CONTRACTOR TO PROVIDE I1) 161lx24" MINIMUM CRAWL SPACE
<br />ACCESS INTO NEW CRAWL SPACE AREA THAT IS ACCESSIBLE
<br />FROM EITHER THE OUTSIDE OR FROM THE EXISTING CRAWLSPACE
<br />AREA. OTHERWISE CONTRACTOR IS TO PROVIDE (1) 18"x24" MINIMUM
<br />CRAWL SPACE ENTRANCE THROUGH MAIN LEVEL FLOOR FRAMING
<br />THAT ACCESSES NEW CRAWL SPACE AREA.
<br />o. A CERTIFICATE IS REQUIRED TO BE POSTED WITHIN 3' OF THE
<br />ELECTRICAL PANEL PER WSEC R401.3 AND INCLUDE THE
<br />FOLLOWING: PREDOMINATE R-VALUES, U-VALUES OF
<br />FENESTRATION, RESULTS FROM DUCT SYSTEM AND BUILDING
<br />ENVELOPE AIR LEAKAGE TESTING, AND EFFICIENCIES OF
<br />HEATING/COOLING/WATER HEATING EQUIPMENT.
<br />p, A MIN OF 75 PERCENT OF PERMANENTLY INSTALLED LAMPS IN
<br />INTERIOR AND EXTERIOR LIGHTING FIXTURES MUST BE
<br />HIGH -EFFICIENCY LAMPS PER WSEC R404.1
<br />INSULATION
<br />FOR SI: 1 FOOT = 304.8 MM, CI = CONTINUOUS INSULATION, INT =
<br />INTERMEDIATE FRAMING
<br />a. R-VALUES ARE MINIMUMS. U-FACTORS AND SHGC ARE MAXIMUMS,
<br />WHEN INSULATION IS INSTALLED IN A CAVITY WHICH IS LESS THAN
<br />THE LABEL OR DESIGN THICKNESS OF THE INSULATION, THE
<br />COMPRESSED R-VALUE OF THE INSULATION FROM APPENDIX TABLE
<br />A1014 SHALL NOT BE LESS THAN THE R-VALUE SPECIFIED IN THE
<br />TABLE
<br />b. THE FENESTRATION U-FACTOR COLUMN EXCLUDES SKYLIGHTS. THE
<br />SHGC COLUMN APPLIES TO ALL GLAZED FENESTRATION.
<br />c, 1110/15/21 +TB" MEANS R-10 CONTINUOUS INSULATION ON THE
<br />EXTERIOR OF THE WALL, OR R-15 CONTINUOUS INSULATION ON THE
<br />INTERIOR OF THE WALL, OR R-21 CAVITY INSULATION PLUS A
<br />THERMAL BREAK BETWEEN THE SLAB AND THE BASEMENT WALL
<br />AT THE INTERIOR OF THE BASEMENT WALL 1110/15/21 +TB" SHALL
<br />BE PERMITTED TO BE MET WITH R-13 CAVITY INSULATION ON THE
<br />INTERIOR OF THE BASEMENT WALL PLUS R-5 CONTINUOUS
<br />INSULATION ON THE INTERIOR OR EXTERIOR OF THE WALL "TB"
<br />MEANS THERMAL BREAK BETWEEN FLOOR SLAB AND BASEMENT
<br />WALL,
<br />d, R-10 CONTINUOUS INSULATION IS REQUIRED UNDER HEATED SLAB ON
<br />GRADE FLOORS. SEE R402,2,9.1.
<br />e, THERE ARE NO SHGC REQUIREMENTS IN THE MARINE ZONE,
<br />f. RESERVED.
<br />9. RESERVED,
<br />h. RESERVED,
<br />i. THE SECOND R-VALUE APPLIES WHEN MORE THAN HALF THE
<br />INSULATION IS ON THE INTERIOR OF THE MASS WALL,
<br />j RESERVED,
<br />k. FOR SINGLE RAFTER- OR JOIST -VAULTED CEILINGS, THE INSULATION
<br />MAY BE REDUCED TO R-38,
<br />1. RESERVED.
<br />m. INT. FRAMING INTERMEDIATE DENOTES STANDARD FRAMING 16
<br />I )
<br />INCHES ON CENTER WITH HEADERS INSULATED WITH A MINIMUM OF
<br />R-10 INSULATION,
<br />n, LOG AND SOLID TIMBER WALLS WITH A MINIMUM AVERAGE
<br />THICKNESS OF 3,5 INCHES ARE EXEMPT FROM THIS INSULATION
<br />REQUIREMENT.
<br />o, WHERE EXISTING FRAMING CAVITIES ARE EXPOSED DURING
<br />CONSTRUCTION, THE CAVITIES MUST BE FILLED TO FULL DEPTH
<br />WITH BATT INSULATION OR INSULATION HAVING AN EQUIVALENT
<br />NOMINAL R-VALUE OF R-15 AT 2x4 WALLS OR R-21 AT 2x6 WALLS
<br />PER WSEC 503:11
<br />M ECHAN ICAL/VENTI'LATION
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<br />4-5
<br />6-7
<br />>7
<br />DWELLING UNIT
<br />FLOOR AREA
<br />SQUARE FEET)
<br />AIRFLOW IN CFM
<br /><1500
<br />30
<br />45
<br />60
<br />75
<br />90
<br />1501-3000
<br />45
<br />60
<br />75
<br />90
<br />105
<br />3001-4500
<br />60
<br />75
<br />90
<br />105
<br />120
<br />4501-6000
<br />75
<br />90
<br />105
<br />120
<br />135
<br />6001-7500
<br />90
<br />105
<br />120
<br />135
<br />150
<br />>7501
<br />105
<br />120
<br />135
<br />1
<br />150
<br />165
<br />Vertical Fenestration (Windows and doors
<br />Component
<br />Description
<br />ACTUAL SIZE
<br />:Width Height Sill
<br />Ref. U-f actor Qt. :Feet, Inch Feet Inch Feet1nch
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<br />r! �
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<br />IMMMMAIIINIMM
<br />MMMMMMM
<br />mmmmmmm
<br />mmmmmmm
<br />w .hum ofVertical Fenestration Area and UA
<br />Vertical Fenestration Area Weighted U = UAj'Area
<br />SAFETY GLAZING FOR EXISTING OPENING REPLACEMENT:
<br />1, GLAZING IN DOORS: SAFETY GLAZING IS REQUIRED IN FIXED AND
<br />OPERABLE PANELS OF SWINGING, SLIDING, AND BIFO'LD DOORS. SAFETY
<br />GLAZING IS NOT REQUIRED IN A DOOR IF THE GLAZED OPENINGS DO
<br />NOT ALLOW THEPASSAGE OF A 3 INCH SPHERE, OR THE GLAZING IN
<br />THE DOOR IS DECORATIVE
<br />2, GLAZING ADJACENT TO DOORS: GLAZING ADJACENT TO DOORS IS
<br />REQUIRED I THE FOLLOWING LOCATIONS IF THE BOTTOM EDGE OF
<br />EQU ED N E G
<br />THE GLAZING IS LESS THAN 60 INCHES ABOVE THE WALKING
<br />SURFACE: WITHIN 24 INCHES OF EITHER SIDE OF THE DOOR IF
<br />GLAZING IS IN THE SAME PLANE AS THE DOOR, OR IF GLAZING IS IN
<br />A WALL PERPENDICULAR TO THE DOOR WITHIN 24 INCHES ON THE Al
<br />HINGE SIDE OF AN INSWING DOOR SAFETY GLAZING IS NOT REQUIRED
<br />WINDOW & DOOR SCHEDULE NOTES:
<br />Area
<br />L
<br />1. XO = SLIDER, SH = SINGLE HUNG, DH = DOUBLE HUNG, FIX =
<br />PICTURE, C = CASEMENT
<br />2. IF CONTRACTOR DECIDES TO REPLACE WINDOWS, THEY MUST
<br />MEET ENERGY PERFORMANCE STANDARDS,HEAT TREATMENT
<br />REQUIREMENTS AND EGRESS.
<br />3, ALL WINDOWS SHALL BE NFRC CERTIFIED.
<br />4. CONTRACTOR TO VERIFY EGRESS AND HEAT TREATMENT
<br />REQUIREMENTS WITH WINDOW & DOOR MANUFACTURER
<br />5. EGRESS WINDOWS SIZED FOR '!MILGARD STYLE LINE" SERIES
<br />WINDOWS, CONTRACTOR TO VERIFY EGRESS REQUIREMENTS IF A
<br />DIFFERENT MANUFACTURER / MODEL IS CHOSEN,
<br />IF THERE IS AN INTERVENING
<br />A D A PM R S OTHER
<br />WALL OR
<br />PERMANENT BARRIER BETWEEN
<br />WASHINGTON STATE ENERGY CREDIT CALCULATION;
<br />THE DOOR AND THE GLAZING.
<br />1. 545 SF OF NEW HEATED FLOOR AREA. 1.5 CREDITS REQ'D.
<br />3. GLAZING IN WINDOWS; SAFETY
<br />GLAZING
<br />IN WINDOWS IS REQUIRED IF
<br />THE INDIVIDUAL PANEL MEETS
<br />ALL OF
<br />THE FOLLOWING REQUIREMENTS;
<br />ENERGY CREDITS CHOSEN:
<br />• EXPOSED AREA OF THE INDIVIDUAL
<br />PANEL IS GREATER THAN 9
<br />SQUARE FEET,
<br />5a: EFFICIENT WATER HEATING 5a:
<br />• THE BOTTOM EDGE OF THE
<br />GLAZING
<br />IS LESS THAN 18 INCHES
<br />0.5 PTS
<br />FROM THE FLOOR
<br />ALL SHOWERHEAD AND KITCHEN SINK FAUCETS INSTALLED IN
<br />• THE TOP EDGE OF THE GLAZING IS
<br />MORE THAN 36 INCHES ABOVE
<br />ALL
<br />THE HOUSE SHALL BE R TE T 1.75 G 0 LES .
<br />THE FLOOR, LAVATORY FAUCETS SHALL BE RATED AT 1,0 GPM OR LESS.
<br />• THERE IS A WALKING SURFACE WITHIN 36 INCHES, MEASURED
<br />HORIZONTALLY, FROM THE GLAZING 5c: EFFICIENT WATER HEATING 5c:
<br />EXCEPTIONS 1.5 PTS
<br />+ DECORATIVE GLAZING GAS WATER HEATER WITH A MINIMUM EF OF 0.91
<br />* WHERE A HORIZONTAL RAIL CAPABLE OF RESISTING 50 PLF
<br />F FORCE WITHOUT MAKING CONTACT WITH THE GLASS IS
<br />SEGMENT
<br />0
<br />INSTALLED ON THE ACCESSIBLE SIDE OF THE GLAZING 34-38
<br />FACTOR
<br />4 3
<br />2
<br />1.5t1,3
<br />1.0
<br />INCHES ABOVE WALKING SURFACE.
<br />4, GLAZING IN RAILINGS AND GUARDS: ALL GLAZING IN GUARDS AND
<br />1_, LOCAL EXHAUST SHALL BE POVIDED IN EACH KITCHEN, BATHROOM,
<br />RAILINGS, INCLUDING STRUCTURAL BALUSTER PANELS AND
<br />WATER CLOSET, LAUNDRY ROOM, INDOOR SWIMMING POOL, SPA, AND OTHER
<br />NONSTRUCTURAL IN -FILL PANELS, IS REQUIRED TO BE SAFETY GLAZING.
<br />ROOMS WHERE WATER VAPOR OR COOKING ODOR IS PRODUCED, LOCAL
<br />5, GLAZING AND WET SURFACE: GLAZING IN WALLS, ENCLOSURES, OR
<br />EXHAUST SYSTEMS SHALL BE DESIGNED TO HAVE CAPACITY TO EXHAST
<br />FENCES AROUND SHOWERS, BATHTUBS, POOLS, HOT TUBS, SPAS, SAUNAS,
<br />THE MINIMUM AIR FLOW RATE DETERMINED IN ACCORDANCE WITH TABLE
<br />AND STEAM ROOMS WHERE THE BOTTOM EDGE OF THE GLAZING IS
<br />IRC M1507.4,
<br />LESS THAN 60 INCHES FROM THE STANDING OR WALKING SURFACE IS
<br />• KITCHENS = 100 CFM INTERMITTENT OR 25 CFM CONTINUOUS,
<br />REQUIRED TO BE SAFETY GLAZING. SAFETY GLAZING IS NOT REQUIRED
<br />• BATHROOMS/TOILET ROOMS, LAUNDRY ROOMS, INDOOR SWIMMING POOL
<br />WHERE THE GLAZINGIS MORE THAN 60 INCHES, HORIZONTALLY, FROM
<br />ROOMS, SPA ROOMS = 50 CFM INTERMITTENT OR 20 CFM
<br />THE EDGE OF THE WATER
<br />CONTINUOUS.
<br />6, REFER TO IRC SECTION 312.2 FOR ADDITIONAL REQUIREMENT
<br />• EXCEPTION: WHERE A RANGE HOOD OR DOWN DRAFT EXHAUST FAN
<br />IS USED TO SATISFY THE LOCAL EXHAUST REQUIREMENTS FOR
<br />KITCHENS, THE RANGE HOOD OR DOWN DRAFT EXHAUST SHALL NOT
<br />BE LESS THAN 100 CFM AT .10 INCHES WATER GAUGE
<br />• LOCAL EXHAUST SYSTEMS SHALL BE CONTROLLED BY MANUAL
<br />SWITCHES, DEHUMIDISTATS, TIMERS, OR OTHER APPROVED MEANS,
<br />2. WHOLE -HOUSE VENTILATION USING EXHAUST FANS MUST COMPLY WITH:
<br />• IRC M1507.3.2: 24HR INTERMITTENT WHOLE -HOUSE SWITCH TO BE
<br />INSTALLED TO CONTROL WHOLE -HOUSE FAN INTERMITTENTLY PER
<br />TABLE M1507.3.3I2), LABEL TO BE AFFIXED TO THE CONTROL THAT
<br />READS "WHOLE HOUSE VENTILATION (SEE OPERATING INSTRUCTIONS)",
<br />OPERATING INSTRUCTIONS SHALL BE PROVIDED BY INSTALLER,
<br />• IRC M1507.3.4A FAN MUST HAVE A FLOW RATING AT 0,25 INCHES
<br />WATER GAUGE
<br />• M1507.3,42; FANS WITHIN 4 FEET OF INTERIOR GRILLE SHALL HAVE
<br />A BONE RATING OF 1.0 OR LESS MEASURED AT 0.1 INCHES1 WATER
<br />GAUGE,
<br />• IRC M15OT3,4,4 EACH HABITABLE SPACE SHALL BE PROVIDED WITH
<br />OUTDOOR AIR INLETS OR OPERABLE WINDOWS WITH AN OPENABLE
<br />AREA NOT LESS THAN 4 SQUARE INCHES OF NET FREE AREA OF
<br />OPENING FOR EACH 10 CFM OF OUTDOOR AIR REQUIRED BY TABLE
<br />M1507.3.3(1), WHERE OUTDOOR AIR SUPPLIES ARE SEPARATED FROM
<br />EXHAUST POINTS BY DOORS, PROVISIONS SHALL BE MADE TO ENSURE
<br />AIR FLOW BY INSTALLATION OF DISTRIBUTION DUCTS, UNDERCUTTING
<br />DOORS, INSTALLATION OF GRILLES, TRANSOMS, OR SIMILAR MEANS.
<br />DOORS SHALL BE UNDERCUT TO A MINIMUM OF 1/2 INCH ABOVE THE
<br />SURFACE OF THE FINISH FLOOR COVERING
<br />3, DUCTS MUST BE LEAK TESTED IN ACCORDANCE WITH WSU RS-33 USING
<br />THE MAXIMUM DUCT LEAKAGE RATES SPECIFIED, DUCT TIGHTNESS MUST
<br />BE VERIFIED BY EITHER A POST-CONSRUCTION TEST OR ROUGH - IN TEST
<br />PER WSEC R403,3.3, TOTAL LEAKAGE MUST BE LESS THAN OR EQUAL TO
<br />4 CFM PER 100 SQ-FT OF CONDITIONED FLOOR AREA WHEN TESTED AT
<br />A PRESSURE DIFFERENTIAL OF 0,1" W.G 125 PA) ACROSS THE ENTIRE
<br />SYSTEM
<br />4, PER IRC M1503,41 IF THE EXHAUST HOOD IN THE KITCHEN HAS A
<br />CAPACITY IN EXCESS OF 400 CFM, IT MUST BE MECHANICALLY OR
<br />NATURALLY PROVIDED WITH MAKEUP AIR AT A RATE OF APPROXIMATELY
<br />EQUAL TO THE EXHAUST TO THE EXHAUST AIR RATE, SUCH MAKE UP AIR
<br />SYSTEMS MUST BE EQUIPPED WITH NOT LESS THAN
<br />ONE DAMPER, EACH DAMPER SHALL BE A GRAVITY DAMPER OR AN
<br />ELECTRICALLY OPERATED DAMPER THAT AUTOMATICALLY OPENS WHEN
<br />THE EXHAUST SYSTEM OPERATES,
<br />5. WHERE A CLOSET IS DESIGNED FOR THE INSTALLATION OF A
<br />CLOTHES DRYER, AN OPENING HAVING AN AREA OF NOT LESS THAN 100
<br />SQ. INCHES SHALL BE PROVIDED IN THE CLOSET ENCLOSURE OR MAKEUP
<br />AIR SHALL BE PROVIDED BY OTHER APPROVED MEANS PER SMC 504,6,
<br />CITY � = E TT
<br />REVIEWED FOR PE 11`
<br />P30
<br />YEN DESIGN INC.
<br />206.432.1111
<br />WWW.YENDES.COM
<br />ENGINEER STAMP
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<br />JOB NO.
<br />20-141
<br />HALF SCALE
<br />11x17
<br />FULL SCALE
<br />22x34
<br />SHEET
<br />OF 10
<br />
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