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<br /> TASLE 6-1 I I.J_ .
<br /> PRE5CRIPTIVE REQUIREMENTS(0,1) FOR GROUP R OCCUPHNCY W U
<br /> CLIMATE ZONE 1 � Q \
<br /> J z �
<br /> I � - ------- -- - �T- TABLE 3-1 i _ Q
<br /> GLAZING GLAZING U-FACTUR � WALL WALL � MINIMUM SOURCE SPECIFIC VENTILATION CAPACITY REQUIREMENTS � � � w
<br /> AREA(10) DOOR(9) VAULTED �NALL t12? INT(4) EXT(4) SLAB(6)
<br /> OPTION �- ------- CEILWG(2) ABOVE FLOOR(5) ON �- - m � V,�
<br /> %OF FLOOR VERTlCAL OVERHEAD �-FACTOR CEILING{3) GRADE BELOW BELOhN GRADE BATHROOMS KITCHENS
<br /> I I i �RADE GRADE
<br /> � -� , r �- , , INTERMITTENLY OPERATING 50 CFM 100 CFM
<br /> , lT� i lT �%� �i/-� ,-� ;� liT'�i/�/� , ��T� l
<br /> /0 3 i 5�3 /9: 0
<br /> q �/, � � R 3 � /t�- � 6t�15; R 1 � R- C� �p 10
<br /> ��� ����� ����/� i%���I�' �� /� ���//i ����i �/�/,�������i � �� �//�, ��� � CONTINUOUS OPERATINr � 20 CFM 25 CFM �
<br /> � �o� � ������%%�j� � llT� ,; , �i ��/� �� �
<br /> Il � � 6 � ��j40 � I/j0.5 0�. -0 / R-3 � 30" � 1���=21 �R! - -�� �
<br /> ��, �/, : /��, ��i/i�i�l�//��, �%��� �����i „ � ��/ �� /
<br /> , , � � � � � ;� � ��� � � ;� / -
<br /> �50,0 �, ,;% � ,,� ,;i %i�, ii�T,, �� � ,'i' ,�;,��
<br /> R��P R 1 i i�ii ' �% ��� �j // % //;� / , � i % � � i��� TABLE 3-2 � -
<br /> � ��,/ / , � � / /� i � 3, ( 3p �/ �21 �,;�! � ,��� � R-3 l �
<br /> .
<br /> NI� N � �4 � �� $�/ �/ � �/ � ��� �L�� � �� �/� g"�' R 10' � � �� � VENTILATION RATES FOR ALL GROUP R OCCUPANGES FOUR STORIES AND LESS
<br /> ;� �9 �� //� �/�/,, / , � - o. s � e�,o.o o , ��/�/ / � u�-.- :oz9
<br /> � p . �q��� . / ;/;� ��� , ,, , ; �� � ����; %�i��� / , � � � MIN AND MAX VENTILATION RATES: CUBIC FEET PER MWUTE(CFM) �
<br /> K1LY �%/� �� 'i��'��/ � /i // /�i� � , // ��, � � (V
<br /> �� / , ', / i � / , ' i � i � FLOOR BEDROOMS
<br /> � �// / �/� //i/.%i/, ��� � � /��%��/,�i�i %i! // �� � / �� AREA, � �
<br /> 2 OR LESS 3 4 5 6 7 8 �
<br /> UNLIMITED SQ. FT. M
<br /> i
<br /> GROUP R-3 � 00
<br /> MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX � �
<br /> �v AND R-4 0.40 0.58 0.20 R-38 R-30 I R-21 R-21 R-10 R-30 R-10 � <500 50 75 65 98 80 120 95 143 110 165 125 188 140 210 � ^
<br /> OCCUPANCIES I
<br /> ONLY 501-1000 55 83 70 105 85 128 100 150 115 173 130 195 145 218 0
<br /> 1001-1500 50 90 75 113 90 135 105 158 120 180 135 203 150 225 � C�
<br /> � � �'-��T� -1- ?�'� �f�- , f � � 1501-2000 65 98 80 120 95 143 110 165 125 188 140 210 155 233 M
<br /> � �� � ���'� /� ���� ��, %./ � ' ' �� �' ��i � � � / � 2001-2500 70 1 Q5 85 � 128 100 150 115 173 130 195 145 218 160 240 �
<br /> � � �U�tl�}I����7� �� �� /�� ��� �j � /�/ � , , ;:,�� �;� � � � 2501-3000 75 113 90 135 105 158 120 180 � 135 203 150 225 165 248 �
<br /> � , � � � ; � i � �� R-3 � R- d ,R�21�I%�% � %�%� �� � � � � � � �
<br /> � � ���� ��:� � 0 Sg' �01L �i � ��� �� � ' / � � R�- 5 R-1 � �� � � � 3001-3500 80 120 95 143 110 165 125 188 140 210 155 233 170 255 �
<br /> 9 /� u� :o � - - / , �/ �°� /��� �
<br /> ��� �� j // �/� i/� �-�.� �, �/ :g6 � � / U=0.0 9 � � � 3501-4000 85 128 100 150 115 173 130 195 145 218 16Q 240 175 263 0 -
<br /> � O UP�ANG�IE ,� � V
<br /> 1/ ' ��� �;/� ��;�� � 'j�/��� �j';�� i��;-��i ��', / � ' �� ���� �� 4001-5000 95 143 110 165 125 188 140 210 155 233 170 255 185 278
<br /> � ;" !�i ��/ �� ��/ i'� / / i i ' �� i =' ;/�; i, ' / � 5001-6000 105 158 120 1$0 135 203 150 225 165 248 180 270 19 � �
<br /> /������� %� � , �� � !� /, � � /_-1� � � i � ; � � ;��iii / �// �/� /��� ��� 5 293
<br /> �- - --- --- �
<br /> 6001-7000 115 173 130 195 145 218 160 240 175 263 190 285 205 308 � �
<br /> "R E F E R E N C E CAS E 7001-8000 125 188 140 210 155 233 170 255 185 278 200 300 215 323 Q
<br /> 8001-9000 135 203 150 225 165 248 180 270 195 293 210 315 225 338
<br /> 0. NOMINAL R-VALUES ARE FOR WOOD FRAME ASSEMBLIES ONLY OR ASSEMBLIES BUILT!N ACCORDANCE WITH SECTION 601.1 >9000 145 218 160 240 175 263 190 285 205 308 220 330 235 353 O �
<br /> 1. MINIMUM REQUIREMENTS FOR EACH OPTION LISTED. FOR EXAMPLE, IF A PROPOSED DESIGN HAS A GLAZING RATIO TO THE *FOR RESIDENCES THAT EXCEED 8 BEDROOMS, INCREASE THE MINIMUM REQUIREMENT LISTED FOR 8
<br /> CONDITIONED FLOOR AREA OF 13%, IT SHALL COMPLY WITH ALL THE REQUIREMENTS OF THE 15%GLAZING OPTION (OR HIGHER). BEDROOMS BY AN ADDITIONAL 15 CFM PER BEDROOM.THE MAXIMUM CFM IS EQUAL TO 1.5 TIMES THE MINIMUM. �
<br /> PROPOSED DESIGNS WHICH CANNOT MEET THE SPECIFlC REQUIREMENTS OF A USTED OPTION ABOVE MAY CALCULATE
<br /> COMPLIANCE BY CHAPTERS 4 OR 5 OF THIS CODE � -
<br /> 2. REQUIREMENT APPLIES TO ALL CEILINGS EXCEPT SINGLE RAFTER OR JOIST VAULTED CELINGS. 'ADV' DENOTES ADVANCED FRAMED CEILING
<br /> 3. REQUIREMENT APPLICABLE ONLY TO SINGLE RAFTER OR JOIST VAULTED CEILINGS. NOTES PER 2003 VIAQ � O
<br /> 4. BELOW GRADE WALLS SHALL BE INSULATED EITHER ON THE EXTERIOR TO A MINIMUM LEVEL OF R-10, OR ON THE INTERIOR TO THE SAME 303.3.1 Source Specific Ventilation: Source specific exhaust ventilation is required in each kitchen, bathroom, water closet, O � '
<br /> LEVEL AS THE WALLS ABOVE GRADE. EXTERIOR INSULATI4N INSTALLED ON BELOW GRADF WALLS SHALL BE A WATER RESISTANT MATERIAL, laundry room, indoor swimming pool, spa, and other rooms where excess water vapor or cooking odor is produced. The � �
<br /> �
<br /> MANUFACTURED FOR ITS INTENDED USE,AND lNSTALLED ACCORDING TO MANUFACTURER'S SPECIFICATIONS. SEE SECTION 602.4 minimum source specific ventilation effective exhaust capacity shall not be less than leveis specified in Table 3-1. � I,()
<br /> 303.3.2 Source Specific Exhaust Fans: Exhaust fans providing source specific ventilation shall have a minimum fan flow
<br /> 5. FLOORS OVER CRAWL SPAGES OR EXPOSED TO AMBIENT AIR CONDIT(ONS rating not less than 50 cfm af 0.25 inches water gauge for bathrooms, laundries, or similar rooms and 100 cfm at 0.25 � z �
<br /> inches water gauge for kitchens. Manufacturers' fan fiow ratings shall be determined as per � �
<br /> 6. REQUIRED SLAB PERIMETER INSULATION SHALL BE A WATER RESISTANT MATERIAL, MANUFACTURED FOR ITS INTENDED USE,AND HVI 916 (April 1995) or AMCA 210.
<br /> INSTALLED ACCORDING TO MANUFACTURER'S SPEGFICATIONS. SEE SECTION 602.4 EXCEPTION: Where a range hood or down draft exhaust fan is used to satisfy the source specific ventilation requirements Q �
<br /> 7. INT. DENOTES STANDARD FRAMING 16"OC WITH HEADERS INSULATED WITH A MINIMUM OF R-10 INSULATION for kitchens, the range hood or down draft exhaust shail not be less than 100 cfm at 0.10 inches water gauge. � W
<br /> 303.3.4 Source Specific Ventilation Ducts: Source specific ventilation ducts shall terminate outside the buiiding. Exhaust ❑ �
<br /> 8. THIS WALL INSULATION REQUIREMENT DENOTES R-19 WALL CAVITY INSULATION PLUS R-5 FOAM SHEATHING ducts shall be equipped with back-draft dampers. Ali exhaust ducts in unconditioned spaces shall be insulated to a W w
<br /> minimum of R-4. Terminal elements shall have at least the equivalent net free area of the duct work. Terminai elements for � �
<br /> 9. DOORS, INCLUDING ALL FIRE DOORS, SHALL BE ASSIGNED DEFAULT U-FACTORS FROM TABLE 10-6C exhaust fan duct systems shail be screened or otherwise protected from entry by leaves or other materiaL Q �
<br /> 303.4.1.1 Whole House Ventilation Fans: Exhaust fans providing whole house ventilation shall have a flow rating at 0.25 -
<br /> 10. WHERE A MAXIMUM GLAZING AREA IS LISTED, THE TOTAL GLAZING AREA(COMBWED VERTICAL PLUS OVERHEAD} inches water gauge as specified in Table 3-2. Manufacturers' fan flow ratings shall be determined according to HVI 916 � �
<br /> AS A PERCENT OF GROSS CONDITIONED FLOOR AREA SHALL BE LESS THAN OR EQUAL 70 THAT VALUE. OVERHEAD (April 1995) or AMCA 210.
<br /> GLAZING WITH U-FACTOR OF U=0.40 OR LESS IS NOT INCLUDED IN GLAZING AREA LIMITATIONS 303.4.1.3 Fan Controis: The whole house ventilation fan shali be controlied by a 24-hour clock timer with the capability of
<br /> 11. OVERHEAD GLAZING SHALL HAVE U-FACTORS DETERMINED IN ACCORDANCE WITH NFRC 1d0 OR AS SPECIFIED IN SECTION 502.1.5 continuous operation, manual and automatic control. The 24-hour timer shall be readily accessible. The 24-hour timer shall
<br /> be capable of operating the whole house ventilation fan without energizing other energy-consuming appliances. At the time
<br /> 12. LOG AND SOLID TIMBER WALLS WITH A MINIMUM AVERAGE THICKNESS OF 3.5"ARE EXEMPT FROM THIS INSULATION REQUIREMENT of final inspection, the automatic control timer shali be set to operate the whole house fan for at least 8 hours a day. A label
<br /> shall be affixed to the control that reads°Whole House Ventilation (see operating instructions)."
<br /> 303.4.1.4 Exhaust Ducts: All exhaust ducts shall terminate outside the building. Exhaust ducts shali be equipped with
<br /> NOTES PER 2003 WSEC back-draft dampers. A!I exhaust ducts in unronditioned spaces shall be insulated to a minimum of R-4.
<br /> 303.4.1.5 Outdoor Air Inlets: Outdoor air shall be distributed to each habitable room by individual outdoor air inlets. Where
<br /> 502.4.3 Seals and Weatherstripping: outdoor air supplies are separated from exhaust points by doors, provisions shall be made to ensure air flow by installation
<br /> a. Exterior joints around windows and door frames, openings between walls and foundation, between walls and roof and wali of distribution ducts, undercutting doors, installation of grilies, transoms, or similar means where permitted by the
<br /> panels; openings at penetrations of utility services through wails, floors and roofs; and aIJ other openings in the building International Buiiding Code. Doors shall be undercut to a minimum of 1/2- inch above the surface of the finish floor covering. �
<br /> envelope for all occupancies and ali other openings in between units in R-1 and R-2 occupancies shail be sealed, caulked, Individual room outdoor air inlets shalL � -
<br /> gasketed or weatherstripped to limit air leakage. Other exterior joints and seams shall be similarly treated, or taped, or covered a. Have controllable and secure openings; b. Be sleeved or otherwise designed so as not to compromise the thermal
<br /> with moisture vapor permeable housewrap. properties of the wall or window in which they are placed; c. Provide not less than 4 square inches of net free area of i C �
<br /> 502.1.6.1 Vapor Retarders: Vapor retarders shall be installed on the warm side (in winter) of insulation as specified in the opening for each habitable space. Any inlet or combination of inlets which provide 10 cfm at 10 Pascals as determined by C /'�1
<br /> following cases. the Home Ventilating Institute Air Flow Test Standard (HVI 901 [November 1996] ) are deemed equivalent to 4 square O � V
<br /> EXCEPTION: Vapor retarder installed with not more than 1/3 of the nominal R-value between it and the conditioned space. inches net free area. �
<br /> 502.1.6.2 Floors: Floors separating conditioned space from unconditioned space shall have a vapor retarder installed. The = N
<br /> vapor retarder shall have a one perm dry cup rating or less(i.e. four mii [O.OQ4 inch thick] polyethylene or kraft faced material). Inlets shall be screened or otherwise protected from entry by leaves or other material. Outdoor air inlets shail be located so �
<br /> 502.1.6.3 Roof/Ceilings: Roof/ceiling assemblies where the ventilation space above the insulation is less than an average of 12 as not to take air from the following areas: �
<br /> inches shall be provided with a vapor retarder. Faced batt insulation where used as a vapor retarder shall be face stapied. a. Closer than 10 feet from an appliance vent outlet, unless such vent outlet is 3 feet above the outdoor air inlet. b. Where it - a Z
<br /> Single rafter joist vaulted ceiling cavities shall be of sufficient depth to allow a minimum one inch vented air space above the will pick up objectionable odors, fumes or flammable vapors. V �
<br /> insulation. c. A hazardous or unsanitary location. d. A room or space having any fuel-burning appliances therein. e. Closer than 10 feet �
<br /> 502.1.6.4: Vapor retarders shall not be required in roof/ceiling assemblies where the ventilation space above the insulation from a vent opening of a plumbing drainage system unless the vent opening is at least 3 feet above the air inlet. f. Attic, J
<br /> averages 12 inches or great�r. crawl spaces, or garages. r� �
<br /> 502.1.6.5: Vapor retarders shall not be required where all of the insulation is installed between the roof inembrane and the v -
<br /> structural roof deck. " EXCEPTION: Exhaust only ventilation systems do not require outdoor air inlets if the home has a ducted forced air w
<br /> 502.1.6.6 Walls: Walls separating conditioned space from unconditioned space shaii have a vapor retarder installed. Faced batt heating system that communicates with all habitabie rooms and the interior doors are undercut to a minimum of'/z- inch J
<br /> insulation shall be face stapled. above the surface of the finish floor covering.
<br /> 502.1.6.7 Ground Cover: A ground cover of six mil (0.006 inch thick) black polyethylene or approved equal shall be laid over the
<br /> ground within crawi spaces. The ground cover shall be overlapped 12 inches minimum at the joints and shall extend to the
<br /> foundation walL
<br /> EXCEPTION: The ground cover may be omitted in crawl spaces if the crawi space has a concrete slab floor with a minimum � I
<br /> thickness of 3-1/2 inches.
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