2011, 12-27 Permit App: 11004037 BasementSinio°lane
40ValleyR
PERMIT NUMBER:
(Staff Use Only)
- 0 3 --7
PERMIT FEE: / 7 1 ? 571
CITY OF SPOKANE VALLEY
Community Development Department
Permit Center
11703 East Sprague Avenue, Suite B-3
Spokane Valley, WA 99206
Tel: (509) 688-0036
Fax: (509) 688-0037
permitcenter@spokanevalley.org
RESIDENTIAL CONSTRUCTION PERMIT APPLICATION
❑ NEW CONSTRUCTION ❑ ADDITION/REMODEL 0 ACCESSORY BUILDING
0 DECK ® OTHER
SITE ADDRESS:17306 E NORA AVE
ASSESSORS PARCEL NO.: ss c,'73, Zr,r, Lt
BUILDING OWNER NAME:
LEGAL DESCRIPTION: } 1 / i73, ,-+.1
NAME:GREGORY ROBINSON
ADDRESS:17306 E NORA AVE
CITY:SPOKANE VALLEY
Zip:99016
STATE:WA
PHONE:509-280-2747 Fax: cELL:509-280-2747
CONTACT NAME:GREGORY ROBINSON
PHONE:509-280-2747 FAX: CELL:
CONTRACTOR NAME: Ow - r
MAILING ADDRESS:
CITY:
STATE: ZIP:
PHONE:
FAX: CELL:
CONTRACTOR LICENSE No.:
EXPIRES: CITY BUSINESS LICENSE NO.:
DESCRIBE THE SCOPE OF WORK IN DETAIL AND INDICATE USE:
FINISH BASEMENT
PROPOSED USE:
LIVING SPACE
Effective October 28, 2007 Page 1 of 2
C:\Documents and Settings\Greg\Desktop\Residential Construction Permit App.l.doc
****YOU MUST COMPLETE THE FOLLOWING****
MARK N/A IF NOT APPLICABLE
Height to Peak:
Dimensions:
No. of Stories: Z
Total Habitable
Space: 1,9 y g'
Main Floor SQ
FT:
Upper Floor SQ
FT: i l p (`3
Unfinished Basement
SQ FT: 9'3 5
Finished Basement
SQ FT: 9 14
Garage SQ FT:
Deck/Covered Patio
SQ FT:
Impervious Surface
Area:
30% Slopes on
Property:
No. of
Bedrooms:
Construction
Type:
Heat Source:
Sewer or
Septic:
v0
TOTAL COST OF PROJECT: $ 5J .
DISCLAIMER
The permitted verifies, acknowledges and agrees by their signature that: 1) if this permit Is for construction or on a dwelling, the dwelling is/will
be served by potable water. 2) Ownership of this City of Spokane Valley permit inure to the property owner. 3) The signatory is the property
owner or has permission to represent the property owner in this transaction. 4) All construction is to be done in full compliance with the City of
Spokane Valley Development code. Referenced codes are available for review at the City of Spokane Valley Permit Center. 5) The City of
Spokane Valley permit is not a permit or a• .royal for any violation of federal, state or local laws, codes or ordinances. 6) Plans or additional
information may be required to be submi ed .nd subsequently approved before this application can be processed.
Date: ) ��"-)
Signature
Method of payment: ❑ Cash ❑ Check
Bankcard #:
❑ Visa 0 Mastercard
EXP: VIN#:
//
Authorized Signature:
Effective October 28, 2007 Page 2 of 2
C:\Documents and Settings\Greg\Desktop\Residential Construction Permit App.1.doc
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CITY COPY
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.0" Vallev
assoc•
REVIEWED FOR CODE COMPLIANCE
SPOKANE VALLEY DING DIVISION
SMOKE ALARMS SHALL BE INTERCON-
NECTED AND HARD WIRED IN SUCH A
MANNER THAT THE ACTIVATION OF ONE
ALARM WILL ACTIVATE ALL ALARMS.
(BEDROOMS, AREAS APPROACHING
BEDROOMS, VAULTED CEILING
V'ITH RISE OF 24" & ON EACH FLOOR)
EMERGENCY EGRESS REQUIREMENTS
c ROM SLEEPING ROOMS
,r� riNG 5 7 SQUARE FEET
TANG (MF X 44") 5 0 SQUARE FEET
HEIGHT 24 INCHES
MN iWIDTH 20 INCHES
',AL HEIGHT 44^ ABOVE FLOOR
Epi tMEiic! %Cr E _.CAPE & RESCUE OPENING SHALL BE
Oi'i i Ai iOiN I. i ;i)M THE INSIDE OF THE ROOM WITHOUT
[HE t!SE. Ji nt.YS OR TOOLS
Thu
TO FIELD..'
THIS BUILDING SUBJECT
TO FIELD INSPECTION CORRECTIONS
��
EMERGENCY ESCAPE AND RESCUE
EGRESS WINDOW
*Minimum 20" wide clear opening
*Minimum 24" high clear opening
*Minimum 5.7 sq ft openable area
**5.0 sq ft minimum @ grade floor
*Top of sill maximum of 44" above finished floor
{.--� 20" CLEAR
MIN
i
i
•
OPENABLE
AREA
5.7 SQ FT MIN
x(5.0 SQ FT MIN
@ GRADE
FLOOR)
MINIMUM SIZE
WINDOW FOR 20 IN.
CLEAR WIDTH
41" CLEAR
SILL HEIGHT
44" MAX
34' CLEAR
OPENABLE AREA
5.7 SQ FT MIN
(5.0 SQ FT MIN @
GRADE FLOOR)
�'
•
MINIMUM SIZE WINDOW
FOR 24 IN. CLEAR HEIGHT
1
24' CLEAR
MIN
FLOOR
Grade floor opening is a window or other openings located such that the sill height of
the opening is not more than 44" above or below the finished ground level adjacent to
the opening.
WINDOW WELL
*Minimum 36" x 36"
*Minimum 9 sq ft clear floor area
*Top of wall a maximum of 44" above
the floor of the well
*A guardrail is not required unless an
exit way adjoins the well.
*Provide drainage
DEEP WELLS
*If the top of the window well wall is more
than 44" above the floor of the well, either
a permanently fixed ladder or stair egress
is required.
*The ladder or stair may encroach a maximum
of 6" into the required clear floor space.
WINDOW WELL
LADDER OR STAIR
REQUIRED
1
'/// \\\\'/// \\\\'/// \
\\\\
'/// \
\\\\
1/1\
\\\\ \\\'/// \\\'/// \\\\
LADDER EGRESS
*At least 12" in width
*Rungs not more than 18" on center
*Minimum 3" toe space
*Permanently fixed
*Non-combustible
*Shall extend to top of wall
LADDER OR STAIR PERMITTED
NET CLEAR DIMENSIONS WHEN TO ENCROACH MAXIMUM OF
FULLY OPENED TO PROVIDE 6 INCHES INTO REQUIRED
9 SQUARE FEET OF OPENING DIMENSIONS
0_13 wi 7
EMERGENCY ESCAPE
OR RESCUE OPENING
WITH FINISHED SILL
HEIGHT BELOW
ADJACENT GRADE
I
///1\\\:\ '/// \\\\'/// \\\\'///.\\\'///
36' MIN
36' MIN
*Where bars, grills, covers, screens or similar devices are installed over emergency
escape and rescue openings, they must be openable from the inside without the need
of special knowledge or special tools, and the force to open them may not be greater
than that required of the opening itself.
CHAPTER 13
GENERAL MECHANICAL SYSTEM REQUIREMENTS
SECTION M1301
GENERAL
M1301.1 Scope. The provisions of this chapter shall govern
the installation of mechanical systems not specifically covered
in other chapters applicable to mechanical systems. Installa-
tions of mechanical appliances, equipment and systems not
addressed by this code shall comply with the applicable provi-
sions of the International Mechanical Code and the Interna-
tional Fuel Gas Code.
M1301.1.1 Flood -resistant installation. In areas prone to
flooding as established by Table R301.2(1), mechanical
appliances, equipment and systems shall be located or
installed in accordance with Section R322.1.6.
SECTION M1302
APPROVAL
M1302.1 Listed and labeled. Appliances regulated by this
code shall be listed and labeled for the application in which
they are installed and used, unless otherwise approved in
accordance with Section R104.11.
SECTION M1303
LABELING OF APPLIANCES
M1303.1 Label information. A permanent factory -applied
nameplate(s) shall be affixed to appliances on which shall
appear, in legible lettering, the manufacturer's name or trade-
mark, the model number, a serial number and the seal or mark
of the testing agency. A label shall also include the following:
1. Electrical appliances. Electrical rating in volts, amperes
and motor phase; identification of individual electrical
components in volts, amperes or watts and motor phase;
and in Btu/h (W) output and required clearances.
2. Absorption units. Hourly rating in Btu/h (W), minimum
hourly rating for units having step or automatic modulat-
ing controls, type of fuel, type of refrigerant, cooling
capacity in Btu/h (W) and required clearances.
3. Fuel -burning units. Hourly rating in Btu/h (W), type of
fuel approved for use with the appliance and required
clearances.
4. Electric comfort heating appliances. Name and trade-
mark of the manufacturer; the model number or equiva-
lent; the electric rating in volts, amperes and phase; Btu/h
(W) output rating; individual marking for each electrical
component in amperes or watts, volts and phase;
required clearances from combustibles and a seal indi-
cating approval of the appliance by an approved agency.
5. Maintenance instructions. Required regular maintenance
actions and title or publication number for the operation
and maintenance manual for that particular model and
type of product.
SECTION M1304
TYPE OF FUEL
M1304.1 Fuel types. Fuel -fired appliances shall be designed
for use with the type of fuel to which they will be connected and
the altitude at which they are installed. Appliances that com-
prise parts of the building mechanical system shall not be con-
verted for the use of a different fuel, except where approved
and converted in accordance with the manufacturer's instruc-
tions. The fuel input rate shall not be increased or decreased
beyond the limit rating for the altitude at which the appliance is
installed.
SECTION M1305
APPLIANCE ACCESS
M1305.1 Appliance access for inspection service, repair and
replacement. Appliances shall be accessible for inspection, ser-
vice, repair and replacement without removing permanent con-
struction, other appliances, or any other piping or ducts not
connected to the appliance being inspected, serviced, repaired or
replaced. A level working space at least 30 inches deep and 30
inches wide (762 mm by 762 mm) shall be provided in front of
the control side to service an appliance. Installation of room heat-
ers shall be permitted with at least an 18 -inch (457 mm) working
space. A platform shall not be required for room heaters.
M1305.1.1 Furnaces and air handlers. Furnaces and air
handlers within compartments or alcoves shall have a mini-
mum working space clearance of 3 inches (76 mm) along
the sides, back and top with a total width of the enclosing
space being at least 12 inches (305 mm) wider than the fur-
nace or air handler. Furnaces having a firebox open to the
atmosphere shall have at least a 6 -inch (152 mm) working
space along the front combustion chamber side. Combus-
tion air openings at the rear or side of the compartment shall
comply with the requirements of Chapter 17.
Exception: This section shall not apply to replacement
appliances installed in existing compartments and
alcoves where the working space clearances are in accor-
dance with the equipment or appliance manufacturer's
installation instructions.
M1305.1.2 Appliances in rooms. Appliances installed in a
compartment, alcove, basement or similar space shall be
accessed by an opening or door and an unobstructed pas-
sageway measuring not less than 24 inches (610 mm) wide
and large enough to allow removal of the largest appliance
in the space, provided there is a level service space of not
less than 30 inches (762 mm) deep and the height of the
appliance, but not less than 30 inches (762 mm), at the front
or service side of the appliance with the door open.
M1305.1.3 Appliances in attics. Attics containing appli-
ances shall be provided with an opening and a clear and
unobstructed passageway large enough to allow removal of
2009 INTERNATIONAL RESIDENTIAL CODE® 477
1
GENERAL MECHANICAL SYSTEM REQUIREMENTS
the largest appliance, but not less than 30 inches (762 mm)
high and 22 inches (559 mm) wide and not more than 20 feet
(6096 mm) long measured along the centerline of the pas-
sageway from the opening to the appliance. The passage-
way shall have continuous solid flooring in accordance with
Chapter 5 not less than 24 inches (610 mm) wide. A level
service space at least 30 inches (762 mm) deep and 30
inches (762 mm) wide shall be present along all sides of the
appliance where access is required. The clear access open-
ing dimensions shall be a minimum of 20 inches by 30
inches (508 mm by 762 mm), and large enough to allow
removal of the largest appliance.
Exceptions:
1. The passageway and level service space are not
required where the appliance can be serviced and
removed through the required opening.
2. Where the passageway is unobstructed and not
less than 6 feet (1829 mm) high and 22 inches (559
mm) wide for its entire length, the passageway
shall be not more than 50 feet (15 250 mm) long.
M1305.1.3.1 Electrical requirements. A luminaire
controlled by a switch located at the required passage-
way opening and a receptacle outlet shall be installed at
or near the appliance location in accordance with Chap-
ter 39.
M1305.1.4 Appliances under floors. Underfloor spaces
containing appliances shall be provided with an unob-
structed passageway large enough to remove the largest
appliance, but not less than 30 inches (762 mm) high and 22
inches (559 mm) wide, nor more than 20 feet (6096 mm)
long measured along the centerline of the passageway from
the opening to the appliance. A level service space at least
30 inches (762 mm) deep and 30 inches (762 mm)wide shall
be present at the front or service side of the appliance. If the
depth of the passageway or the service space exceeds 12
inches (305 mm) below the adjoining grade, the walls of the
passageway shall be lined with concrete or masonry extend-
ing 4 inches (102 mm) above the adjoining grade in accor-
dance with Chapter 4. The rough -framed access opening
dimensions shall be a minimum of 22 inches by 30 inches
(559 mm by 762 mm), and large enough to remove the larg-
est appliance.
Exceptions:
1. The passageway is not required where the level
service space is present when the access is open,
and the appliance can be serviced and removed
through the required opening.
2. Where the passageway is unobstructed and not
less than 6 feet high (1929 mm) and 22 inches (559
mm) wide for its entire length, the passageway
shall not be limited in length.
M1305.1.4.1 Ground clearance. Equipment and appli-
ances supported from the ground shall be level and
firmly supported on a concrete slab or other approved
material extending not less than 3 inches (76 mm) above
the adjoining ground. Such support shall be in accor-
dance with the manufacturer's installation instructions.
Appliances suspended from the floor shall have a clear-
ance of not less than 6 inches (152 mm) from the ground.
M1305.1.4.2 Excavations. Excavations for appliance
installations shall extend to a depth of 6 inches (152 mm)
below the appliance and 12 inches (305 mm) on all sides,
except that the control side shall have a clearance of 30
inches (762 mm).
M1305.1.4.3 Electrical requirements. A luminaire
controlled by a switch located at the required passage-
way opening and a receptacle outlet shall be installed at
or near the appliance location in accordance with Chap-
ter 39.
SECTION M1306
CLEARANCES FROM COMBUSTIBLE
CONSTRUCTION
M1306.1 Appliance clearance. Appliances shall be installed
with the clearances from unprotected combustible materials as
indicated on the appliance label and in the manufacturer's
installation instructions.
M1306.2 Clearance reduction. Reduction of clearances shall
be in accordance with the appliance manufacturer's instruc-
tions and Table M1306.2. Forms of protection with ventilated
air space shall conform to the following requirements:
1. Not less than 1 -inch (25 mm) air space shall be provided
between the protection and combustible wall surface.
2. Air circulation shall be provided by having edges of the
wall protection open at least 1 inch (25 mm).
3. If the wall protection is mounted on a single flat wall
away from corners, air circulation shall be provided by
having the bottom and top edges, or the side and top
edges open at least 1 inch (25 mm).
4. Wall protection covering two walls in a corner shall be
open at the bottom and top edges at least 1 inch (25
mm).
M1306.2.1 Solid -fuel appliances. Table M1306.2 shall not
be used to reduce the clearance required for solid -fuel appli-
ances listed for installation with minimum clearances of 12
inches (305 mm) or less. For appliances listed for installa-
tion with minimum clearances greater than 12 inches (305
mm), Table M1306.2 shall not be used to reduce the clear-
ance to less than 12 inches (305 mm).
SECTION M1307
APPLIANCE INSTALLATION
M1307.1 General. Installation of appliances shall conform to
the conditions of their listing and label and the manufacturer's
installation instructions. The manufacturer's operating and
installation instructions shall remain attached to the appliance.
478 2009 INTERNATIONAL RESIDENTIAL CODE®
FUEL GAS
as specified in Section G2445.6 and has an input rating
not greater than 10,000 Btulh (2.93 kW). The bedroom
shall meet the required volume criteria of Section
G2407.5.
5. The appliance is installed in a room or space that opens
only into a bedroom or bathroom, and such room or
space is used for no other purpose and is provided with a
solid weather-stripped door equipped with an approved
self-closing device. All combustion air shall be taken
directly from the outdoors in accordance with Section
G2407.6.
G2406.3 (303.6) Outdoor locations. Appliances installed in
outdoor locations shall be either listed for outdoor installation
or provided with protection from outdoor environmental fac-
tors that influence the operability, durability and safety of the
appliance.
SECTION G2407 (304)
COMBUSTION, VENTILATION AND DILUTION AIR
G2407.1 (304.1) General. Air for combustion, ventilation and
dilution of flue gases for appliances installed in buildings shall
be provided by application of one of the methods prescribed in
Sections G2407.5 through G2407.9. Where the requirements
of Section G2407.5 are not met, outdoor air shall be introduced
in accordance with one of the methods prescribed in Sections
G2407.6 through G2407.9. Direct -vent appliances, gas appli-
ances of other than natural draft design and vented gas appli-
ances other than Category I shall be provided with combustion,
ventilation and dilution air in accordance with the appliance
manufacturer's instructions.
Exception: Type 1 clothes dryers that are provided with
makeup air in accordance with Section G2439.4.
G2407.2 (304.2) Appliance location. Appliances shall be
located so as not to interfere with proper circulation of combus-
tion, ventilation and dilution air.
G2407.3 (304.3) Draft hood/regulator location. Where used,
a draft hood or a barometric draft regulator shall be installed in
the same room or enclosure as the appliance served so as to pre-
vent any difference in pressure between the hood or regulator
and the combustion air supply.
G2407.4 (304.4) Makeup air provisions. Where exhaust fans,
clothes dryers and kitchen ventilation systems interfere with
the operation of appliances, makeup air shall be provided.
G2407.5 (304.5) Indoor combustion air. The required volume
of indoor air shall be determined in accordance with Section
G2407.5.1 or G2407.5.2, except that where the air infiltration
rate is known to be less than 0.40 air changes per hour (ACH),
Section G2407.5.2 shall be used. The total required volume shall
be the sum of the required volume calculated for all appliances
located within the space. Rooms communicating directly with
the space in which the appliances are installed through openings
not furnished with doors, and through combustion air openings
sized and located in accordance with Section G2407.5.3, are
considered to be part of the required volume.
G2407.5.1 (304.5.1) Standard method. The minimum
required volume shall be 50 cubic feet per 1,000 Btu/h (4.8
m3/kW).
G2407.5.2 (304.5.2) Known air -infiltration -rate method.
Where the air infiltration rate of a structure is known, the min-
imum required volume shall be determined as follows:
For appliances other than fan assisted, calculate volume
using Equation 24-1.
21 ft 'other
3 /
Required Volumeother >
ACH �1,000Btu /hr
For fan -assisted appliances,
Equation 24-2.
(Equation 24-1)
calculate volume using
15ft3/ 1
Required Volumefan >_ fan
where:
ACH l 000Btu / hr
(Equation 24-2)
'other = All appliances other than fan assisted (input in
Btulh).
'fa„ = Fan -assisted appliance (input in Btulh).
ACH = Air change per hour (percent of volume of space
exchanged per hour, expressed as a decimal).
For purposes of this calculation, an infiltration rate
greater than 0.60 ACH shall not be used in Equations 24-1
and 24-2.
G2407.5.3 (304.5.3) Indoor opening size and location.
Openings used to connect indoor spaces shall be sized and
located in accordance with Sections G2407.5.3.1 and
G2407.5.3.2 (see Figure G2407.5.3).
G2407.5.3.1 (304.5.3.1) Combining spaces on the same
story. Each opening shall have a minimum free area of 1
square inch per 1,000 Btu/h (2,200 mm2/kW) of the total
input rating of all appliances in the space, but not less
than 100 square inches (0.06 m2). One opening shall
commence within 12 inches (305 mm) of the top and one
opening shall commence within 12 inches (305 mm) of
the bottom of the enclosure. The minimum dimension of
air openings shall be not less than 3 inches (76 mm).
G2407.5.3.2 (304.5.3.2) Combining spaces in differ-
ent stories. The volumes of spaces in different stories
shall be considered as communicating spaces where such
spaces are connected by one or more openings in doors
or floors having a total minimum free area of 2 square
inches per 1,000 Btu/h (4402 mm2/kW) of total input rat-
ing of all appliances.
G2407.6 (304.6) Outdoor combustion air. Outdoor combustion
air shall be provided through opening(s) to the outdoors in accor-
dance with Section G2407.6.1 or G2407.6.2. The minimum
dimension of air openings shall be not less than 3 inches (76 mm).
G2407.6.1 (304.6.1) Two -permanent -openings method.
Two permanent openings, one commencing within 12 inches
(305 mm) of the top and one commencing within 12 inches
520 2009 INTERNATIONAL RESIDENTIAL CODE®
CHIMNEY OR GAS VENT
II 1I 1I II II II II III
FIGURE G2407.5.3 (304.5.3)
ALL AIR FROM INSIDE THE BUILDING
(see Section 2407.5.3)
OPENING
(305 mm) of the bottom of the enclosure, shall be provided.
The openings shall communicate directly, or by ducts, with the
outdoors or spaces that freely communicate with the outdoors.
Where directly communicating with the outdoors, or
where communicating with the outdoors through vertical
ducts, each opening shall have a minimum free area of 1
square inch per 4,000 Btulh (550 mm2/kW) of total input rat-
ing of all appliances in the enclosure [see Figures
G2407.6.1(1) and G2407.6.1(2)].
Where communicating with the outdoors through hori-
zontal ducts, each opening shall have a minimum free area
of not less than 1 square inch per 2,000 Btu/h (1,100
mm2/kW) of total input rating of all appliances in the enclo-
sure [see Figure G2407.6.1(3)].
G2407.6.2 (304.6.2) One -permanent -opening method.
One permanent opening, commencing within 12 inches
(305 mm) of the top of the enclosure, shall be provided. The
appliance shall have clearances of at least 1 inch (25 mm)
from the sides and back and 6 inches (152 mm) from the
front of the appliance. The opening shall directly communi-
cate with the outdoors or through a vertical or horizontal
duct to the outdoors, or spaces that freely communicate with
the outdoors (see Figure G2407.6.2) and shall have a mini-
mum free area of 1 square inch per 3,000 Btulh (734
mm2/kW) of the total input rating of all appliances located
in the enclosure and not less than the sum of the areas of all
vent connectors in the space.
G2407.7 (304.7) Combination indoor and outdoor combus-
tion air. The use of a combination of indoor and outdoor com-
bustion air shall be in accordance with Sections G2407.7.1
through G2407.7.3.
G2407.7.1 (304.7.1) Indoor openings. Where used, open-
ings connecting the interior spaces shall comply with Sec-
tion G2407.5.3.
CHIMNEY OR GAS VENT
Fumace
Water
heater
11111111111111
1
1
FUEL GAS
OPENING
-ALTERNATE OPENING
LOCATION
FIGURE G2407.6.2 (304.6.2)
SINGLE COMBUSTION AIR OPENING,
ALL AIR FROM OUTDOORS
(see Section 2407.6.2)
G2407.7.2 (304.7.2) Outdoor opening location. Outdoor
opening(s) shall be located in accordance with Section G2407.6.
G2407.7.3 (304.7.3) Outdoor opening(s) size. The out-
door opening(s) size shall be calculated in accordance with
the following:
1. The ratio of interior spaces shall be the available vol-
ume of all communicating spaces divided by the
required volume.
2. The outdoor size reduction factor shall be one minus
the ratio of interior spaces.
3. The minimum size of outdoor opening(s) shall be the
full size of outdoor opening(s) calculated in accor-
dance with Section G2407.6, multiplied by the reduc-
tion factor. The minimum dimension of air openings
shall be not less than 3 inches (76 mm).
G2407.8 (304.8) Engineered installations. Engineered com-
bustion air installations shall provide an adequate supply of
combustion, ventilation and dilution air and shall be approved.
G2407.9 (304.9) Mechanical combustion air supply. Where
all combustion air is provided by a mechanical air supply sys-
tem, the combustion air shall be supplied from the outdoors at a
rate not less than 0.35 cubic feet per minute per 1,000 Btu/h
(0.034 m3/min per kW) of total input rating of all appliances
located within the space.
G2407.9.1 (304.9.1) Makeup air. Where exhaust fans are
installed, makeup air shall be provided to replace the
exhausted air.
G2407.9.2 (304.9.2) Appliance interlock. Each of the
appliances served shall be interlocked with the mechanical
air supply system to prevent main burner operation when
the mechanical air supply system is not in operation.
2009 INTERNATIONAL RESIDENTIAL CODE® 521
FUEL GAS
CHIMNEY OR GAS VENT
FURNA
ALTERN
AIR
INLET
VENTILATION LOUVERS
(EACH END OF ATTIC)
Z ``
ATE
�
OUTLE
WAT
INLET
1
I I
I 1
1 1
tiff
11114111
11
IIIIII,�IIIII1I11
1
1 11 11
1
VENTILATION LOUVERS
FOR UNHEATED CRAWL SPACE
T AIR
ER HEATER
AIR
FIGURE G2407.6.1(1) [304.6.1(1)]
ALL AIR FROM OUTDOOR -INLET AIR FROM VENTILATED
CRAWL SPACE AND OUTLET AIR TO VENTILATED ATTIC (see Section G2407.6.1)
CHIMNEY OR GAS VENT
For SI: 1 foot = 304.8 mm.
VENTILATION LOUVERS
(EACH END OF ATTIC)
FURNACE
OUTLET AIR
WATER HEATER
[INLET AIR DUCT (ENDS 1 FT.) ABOVE
FLOOR]
1 1111
1 1
1 1
1111111 111111111
1 1 1 1 1 1
FIGURE G2407.6.1(2) [304.6.1(2)]
ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC
(see Section G2407.6.1)
522 2009 INTERNATIONAL RESIDENTIAL CODE®
CHIMNEY OR GAS VENT
E
O
OUTLET AIR DUCT
INLET AIR DUCT
1 1 E 1 1 1 1 1 1 1 1 1 1 1
1 I 1 I I I I I I I I I I I
1 1 1 I I I I I I I I I I I
I
FIGURE G2407.6.1(3) [304.6.1(3)]
ALL AIR FROM OUTDOORS
(see Section G2407.6.1)
G2407.9.3 (304.9.3) Combined combustion air and ven-
tilation air system. Where combustion air is provided by
the building's mechanical ventilation system, the system
shall provide the specified combustion air rate in addition to
the required ventilation air.
G2407.10 (304.10) Louvers and grilles. The required size of
openings for combustion, ventilation and dilution air shall be
based on the net free area of each opening. Where the free area
through a design of louver, grille or screen is known, it shall be
used in calculating the size opening required to provide the free
area specified. Where the design and free area of louvers and
grilles are not known, it shall be assumed that wood louvers
will have 25 -percent free area and metal louvers and grilles will
have 75 -percent free area. Screens shall have a mesh size not
smaller than 1/4 inch (6.4 mm). Nonmotorized louvers and
grilles shall be fixed in the open position. Motorized louvers
shall be interlocked with the appliance so that they are proven
to be in the full open position prior to main burner ignition and
during main burner operation. Means shall be provided to pre-
vent the main burner from igniting if the louvers fail to open
during burner start-up and to shut down the main burner if the
louvers close during operation.
G2407.11 (304.11) Combustion air ducts. Combustion air
ducts shall comply with all of the following:
1. Ducts shall be constructed of galvanized steel complying
with Chapter 16 or of a material having equivalent corro-
sion resistance, strength and rigidity.
Exception: Within dwellings units, unobstructed
stud and joist spaces shall not be prohibited from con -
2009 INTERNATIONAL RESIDENTIAL CODE®
FUEL GAS
veying combustion air, provided that not more than
one required fireblock is removed.
2. Ducts shall terminate in an unobstructed space allowing
free movement of combustion air to the appliances.
3. Ducts shall serve a single enclosure.
4. Ducts shall not serve both upper and lower combustion
air openings where both such openings are used. The
separation between ducts serving upper and lower com-
bustion air openings shall be maintained to the source of
combustion air.
5. Ducts shall not be screened where terminating in an attic
space.
6. Horizontal upper combustion air ducts shall not slope
downward toward the source of combustion air.
7. The remaining space surrounding a chimney liner, gas
vent, special gas vent or plastic piping installed within a
masonry, metal or factory -built chimney shall not be
used to supply combustion air.
Exception: Direct -vent gas-fired appliances designed
for installation in a solid fuel -burning fireplace where
installed in accordance with the manufacturer's
instructions.
8. Combustion air intake openings located on the exterior
of a building shall have the lowest side of such openings
located not less than 12 inches (305 mm) vertically from
the adjoining finished ground level.
G2407.12 (304.12) Protection from fumes and gases. Where
corrosive or flammable process fumes or gases, other than
523
1
FUEL GAS
products of combustion, are present, means for the disposal of
such fumes or gases shall be provided. Such fumes or gases
include carbon monoxide, hydrogen sulfide, ammonia, chlo-
rine and halogenated hydrocarbons.
In barbershops, beauty shops and other facilities where
chemicals that generate corrosive or flammable products, such
as aerosol sprays, are routinely used, nondirect vent -type
appliances shall be located in a mechanical room separated or
partitioned off from other areas with provisions for combustion
air and dilution air from the outdoors. Direct -vent appliances
shall be installed in accordance with the appliance manufac-
turer's installation instructions.
SECTION G2408 (305)
INSTALLATION
G2408.1 (305.1) General. Equipment and appliances shall be
installed as required by the terms of their approval, in accor-
dance with the conditions of listing, the manufacturer's instruc-
tions and this code. Manufacturers' installation instructions
shall be available on the job site at the time of inspection.
Where a code provision is less restrictive than the conditions of
the listing of the equipment or appliance or the manufacturer's
installation instructions, the conditions of the listing and the
manufacturer's installation instructions shall apply.
Unlisted appliances approved in accordance with Section
G2404.3 shall be limited to uses recommended by the manu-
facturer and shall be installed in accordance with the manufac-
turer's instructions, the provisions of this code and the
requirements determined by the code official.
G2408.2 (305.3) Elevation of ignition source. Equipment and
appliances having an ignition source shall be elevated such that
the source of ignition is not less than 18 inches (457 mm) above
the floor in hazardous locations and public garages, private
garages, repair garages, motor fuel -dispensing facilities and
parking garages. For the purpose of this section, rooms or
spaces that are not part of the living space of a dwelling unit and
that communicate directly with a private garage through open-
ings shall be considered to be part of the private garage.
Exception: Elevation of the ignition source is not required
for appliances that are listed as flammable vapor ignition
resistant.
G2408.2.1 (305.3.1) Installation in residential garages.
In residential garages where appliances are installed in a
separate, enclosed space having access only from outside of
the garage, such appliances shall be permitted to be
installed at floor level, provided that the required combus-
tion air is taken from the exterior of the garage.
G2408.3 (305.5) Private garages. Appliances located in pri-
vate garages shall be installed with a minimum clearance of 6
feet (1829 mm) above the floor.
Exception: The requirements of this section shall not apply
where the appliances are protected from motor vehicle
impact and installed in accordance with Section G2408.2.
G2408.4 (305.7) Clearances from grade. Equipment and
appliances installed at grade level shall be supported on a level
concrete slab or other approved material extending not less
than 3 inches (76 mm) above adjoining grade or shall be sus-
pended not less than 6 inches (152 mm) above adjoining grade.
Such supports shall be installed in accordance with the manu-
facturer's installation instructions.
G2408.5 (305.8) Clearances to combustible construction.
Heat -producing equipment and appliances shall be installed to
maintain the required clearances to combustible construction
as specified in the listing and manufacturer's instructions. Such
clearances shall be reduced only in accordance with Section
G2409. Clearances to combustibles shall include such consid-
erations as door swing, drawer pull, overhead projections or
shelving and window swing. Devices, such as door stops or
limits and closers, shall not be used to provide the required
clearances.
G2408.6 (305.12) Avoid strain on gas piping. Appliances
shall be supported and connected to the piping so as not to exert
undue strain on the connections.
SECTION G2409 (308)
CLEARANCE REDUCTION
G2409.1 (308.1) Scope. This section shall govem the reduc-
tion in required clearances to combustible materials and com-
bustible assemblies for chimneys, vents, appliances, devices
and equipment.
G2409.2 (308.2) Reduction table. The allowable clearance
reduction shall be based on one of the methods specified in
Table G2409.2 or shall utilize an assembly listed for such appli-
cation. Where required clearances are not listed in Table
G2409.2, the reduced clearances shall be determined by linear
interpolation between the distances listed in the table. Reduced
clearances shall not be derived by extrapolation below the
range of the table. The reduction of the required clearances to
combustibles for listed and labeled appliances and equipment
shall be in accordance with the requirements of this section
except that such clearances shall not be reduced where reduc-
tion is specifically prohibited by the teens of the appliance or
equipment listing [see Figures G2409.2(1), G2409.2(2) and
G2409.2(3)].
G2409.3 (308.3) Clearances for indoor air-conditioning
appliances. Clearance requirements for indoor air-condition-
ing appliances shall comply with Sections G2409.3.1 through
G2409.3.5.
G24093.1 (308.3.1) Appliances installed in rooms that
are large in comparison with the size of the appliances.
Air-conditioning appliances installed in rooms that are
large in comparison with the size of the appliance shall be
installed with clearances in accordance with the manufac-
turer's instructions.
G2409.3.2 (308.3.2) Appliances installed in rooms that are
not large in comparison with the size of the appliances.
Air-conditioning appliances installed in rooms that are not
large in comparison with the size of the appliance, such as
alcoves and closets, shall be listed for such installations and
installed in accordance with the manufacturer's instructions.
Listed clearances shall not be reduced by the protection meth-
ods described in Table G2409.2, regardless of whether the
enclosure is of combustible or noncombustible material.
524 2009 INTERNATIONAL RESIDENTIAL CODE®