ARTICLE III.
INTERNATIONAL RESIDENTIAL CODE
Sec.
8-300. Adopted; where filed; amendments.
(a) That certain document known as the
"International Residential Code, 2009 Edition," which has been
published as a code in book form by the International Code Council, chapters
two through forty-four, and appendix chapters A, B, C, G, H, J, K, O, and P
inclusive, three (3) copies with amendments of which are on file in the office
of the City Clerk.
(Ord. No. 2011.33, 9-22-11)
Charter
reference—Adoption by reference, § 2.14.
State law reference—Adoption by
reference, A.R.S. § 9-801 et seq.
Sec. R201 General
Section
R201.4 is hereby amended as follows:
Section R201.4. Terms not
defined. Where terms are not defined through the methods
authorized by this section, such terms shall have ordinarily accepted meanings
such as the context implies. Webster’s Third New International Dictionary of
the English Language, Unabridged, shall be considered as providing ordinarily
accepted meanings.
(Ord. No. 2011.33, 9-22-11)
Sec. R202 Definitions
Section
R202 is hereby amended as follows:
EMERGENCY
ESCAPE AND RESCUE OPENING. An operable window, door or similar device
that provides for a means of escape that opens directly into a public street,
public alley, yard or court and provides access for rescue in the event of an
emergency.
EXTERIOR WALL.
Any above-grade wall or element of a wall or any member or group of members,
which has a slope of 60 degrees or greater with the horizontal plane that
defines the exterior boundaries or courts of a building. This includes
between-floor spandrels, peripheral edges of floors, roof and basement knee
walls, dormer walls, gable end walls, walls enclosing a mansard roof and
basement walls with an average below-grade wall area that is less than 50
percent of the total opaque and nonopaque area of that enclosing side.
(Ord. No. 2011.33, 9-22-11)
Sec. R301 DESIGN CRITERIA.
Section
R301.1.1 is hereby amended as follows:
Section R301.1.1.
Alternative provisions. As an alternative to the requirements in Section
R301.1 with prior approval of the building official the following standards are
permitted subject to the limitations of this code and the limitations therein.
Where engineered design is used in conjunction with these standards the design
shall comply with the International Building Code.
1. American Forest and
Paper Association (AF&PA) Wood Frame Construction Manual (WFCM).
2. American Iron and
Steel Institute (AISI), Standard for Cold-Formed Steel Framing-Prescriptive
Method for One- and Two-family Dwellings (AISI S320).
3. ICC-400 Standard on Design and Construction of Log
Structures.
Table
R301.2 (1) is hereby amended as follows:
Table R301.2 (1)
CLIMATIC
AND GEOGRAPHICAL DESIGN CRITERIA
|
Ground snow
load |
Wind Design |
Seismic design
categoryg |
Subject to
damage from |
Winter design
tempe |
Ice shield
Under-layment requiredh |
Flood Hazardsg |
Air Freezing
Indexi |
Mean Annual
Temp. j |
||||
|
Speedd (mph) |
Exposure |
Weatheringa |
Frost
line depthb |
Termitec |
|
|||||||
|
0 |
90 3
sec |
C |
C |
Negligible |
12
inches |
moderate to heavy |
34
degrees |
N/A |
See
Maricopa County |
0 |
71.2°F |
|
Table
R301.5 is hereby amended as follows:
TABLE R301.5
MINIMUM UNIFORMLY
DISTRIBUTED LIVE LOADS
(In pounds per square foot)
|
USE |
LIVE
LOAD |
|
Attics without storage b |
10 |
|
Attics with limited storage b, g |
20 |
|
Habitable attics and attics served with
fixed stairs |
30 |
|
Balconies (exterior) and decks e |
40 |
|
Fire escapes |
40 |
|
Guardrails and handrails d |
200h |
|
Guardrails in–fill components f |
50h |
|
Passenger vehicle garages a |
50a |
|
Rooms other than sleeping rooms |
40 |
|
Sleeping rooms |
40 |
|
Stairs |
40c |
For SI: 1
pound per square foot = 0.0479 kPa, 1 square inch = 645 mm2,
1 pound = 4.45 N.
a. Elevated garage floors shall be capable of
supporting a 2,000-pound load applied over a 20-square-inch area.
b. Attics without storage are those where the
maximum clear height between joist and rafter is less than 42 inches, or where
there are not two or more adjacent trusses with the same web configuration
capable of containing a rectangle 42 inches high by 2 feet wide, or greater,
located within the plane of the truss. For attics without storage, this live
load need not be assumed to act concurrently with any other live load
requirements.
c. Individual stair treads shall be designed for
the uniformly distributed live load or a 300-pound concentrated load acting
over an area of 4 square inches, whichever produces the greater stresses.
d. A single concentrated load applied in any
direction at any point along the top.
e. See Section R502.2.1 for decks attached to exterior
walls.
f. Guard in-fill components (all those except
the handrail), balusters and panel fillers shall be designed to withstand a
horizontally applied normal load of 50 pounds on an area equal to 1 square
foot. This load need not be assumed to act concurrently with any other live
load requirement.
g. For attics with limited storage and
constructed with trusses, this live load need be applied only to those portions
of the bottom chord where there are two or more adjacent trusses with the same
web configuration capable of containing a rectangle 42 inches high or greater
by 2 feet wide or greater, located within the plane of the truss. The rectangle
shall fit between the top of the bottom chord and the bottom of any other truss
member, provided that each of the following criteria is met.
1. The attic area is accessible
by a pull-down stairway or framed in accordance with Section R807.1.
2. The truss has a bottom chord
pitch less than 2:12.
3. Required insulation depth is
less than the bottom cord member depth.
The bottom chords of trusses meeting the above criteria for
limited storage shall be designed for the greater of the actual imposed dead
load or 10 psf, uniformly distributed over the entire span.
h. Glazing used in handrail assemblies and guards
shall be designed with a safety factor of 4. The safety factor shall be applied
to each of the concentrated loads applied to the top of the rail, and to the
load on the in-fill components. These loads shall be determined independent of
one another, and loads are assumed not to occur with any other live load.
(Ord. No. 2011.33, 9-22-11)
Sec. R302 FIRE-RESISTANT CONSTRUCTION
Section R302.2 is hereby amended as follows:
R302.2 Townhouses. Each townhouse shall be considered a separate
building and shall be separated by fire-resistance-rated wall assemblies
meeting the requirements of Section R302.1 for exterior walls.
Exception: A
common 2-hour fire-resistance-rated wall assembly tested in accordance with
ASTM E 119 or UL 263 is permitted for townhouses if such walls do not contain
plumbing or mechanical equipment, ducts or vents in the cavity of the common
wall. The wall shall have sufficient structural stability under fire conditions
to allow collapse of construction on either side without collapse of the wall
for the duration of time indicated by the required fire-resistance rating. The
wall shall be rated for fire exposure from both sides and shall extend to and
be tight against exterior walls and the underside of the roof sheathing.
Electrical installations shall be installed in accordance with Chapters 34
through 43. Penetrations of electrical outlet boxes shall be in accordance with
Section R302.4.
Section
R302.2.4 is hereby amended as follows:
R302.2.4 Structural independence. Each individual townhouse shall be structurally
independent.
Exceptions:
1. Foundations supporting exterior walls or common walls.
2. Structural roof and wall sheathing from each unit may
fasten to the common wall framing.
3. Nonstructural wall and roof coverings.
4. Flashing at termination of roof covering over common
wall.
5. Townhouses separated by a common 2-hour
fire-resistance-rated wall as provided in Section R302.2.
Table
R302.1 is hereby amended as follows:
TABLE R302.1
EXTERIOR WALLS
|
EXTERIOR
WALL ELEMENT |
MINIMUM
FIRE-RESISTANCE RATING |
MINIMUM
FIRE SEPARATION DISTANCE |
|
|
Walls |
(Fire-resistance rated) |
1 hour-tested in accordance with ASTM E 119 or UL 263
with exposure from both sides |
< 5 feeta |
|
(Not fire-resistance rated) |
0 hours |
³ 5 feet |
|
|
Projections |
(Fire-resistance rated) |
1 hour on the underside |
³ 2 feet to 5 feetb |
|
(Not fire-resistance rated) |
0 hours |
5 feet |
|
|
Openings in walls |
Not allowed |
N/A |
< 3 feet |
|
25% maximum of wall area |
0 hours |
3 feet |
|
|
Unlimited |
0 hours |
5 feet |
|
|
Penetrations |
All |
Comply with Section R317.3 |
< 5 feet |
|
None required |
5 feet |
||
For
SI: 1 foot = 304.8 mm.
N/A
= Not Applicable.
·
Any new addition is on the same side of the dwelling where the existing
exterior wall line is ³ three (3’) feet from lot
line.
·
The new addition’s exterior wall line and the existing
dwelling/addition exterior wall line are on the same plane.
·
Projections < three (3’) feet from property line are of one (1) hour
fire-resistive construction on the underside.
·
Projections maintain a minimum fire
separation distance of ³
two (2’) feet from
property line.
Section
R302.5.1 is hereby amended as follows:
Section R302.5.1. Opening
protection. Openings from a private garage directly into a room
used for sleeping purposes shall not be permitted. Other openings between the
garage and residence shall be equipped with solid wood doors not less than
1⅜ inch (35 mm) in thickness, solid or honeycomb core steel doors not
less than 1⅜ inches (35 mm) thick, or 20-minute fire-rated doors. Doors
providing opening protection shall be maintained self-closing and
self-latching.
(Ord. No. 2011.33, 9-22-11)
Sec. R308 GLAZING
Section
R308.4 is hereby amended as follows:
R308.4
Hazardous locations. The following
shall be considered specific hazardous locations requiring safety glazing
materials:
(Ord. No. 2011.33, 9-22-11)
Sec. R311 MEANS OF EGRESS
Section R311.2 is hereby amended as follows:
Section R311.2. Egress door. At
least one egress door shall be provided for each dwelling unit. The egress door
shall be side-hinged, and shall provide a minimum clear width of 32 inches (813
mm) when measured between the face of the door and the stop, with the door open
90 degrees (1.57 rad). The minimum clear height of the door opening shall not be
less than 78 inches (1981 mm) in height measured from the top of the threshold
to the bottom of the stop. Other doors shall not be required to comply with
these minimum dimensions. Egress doors shall be readily openable from inside
the dwelling without the use of a key or special knowledge or effort.
Exception: One and two-family dwellings
and individual dwelling units of townhomes not more than three stories above
grade plane may be provided with a night latch, dead bolt or security chain, provided such devices are openable from the
inside without the use of a key or special knowledge or effort.
(Ord. No. 2011.33, 9-22-11)
Sec. R313 AUTOMATIC FIRE SPRINKLERS.
Section
R313 is hereby deleted.
(Ord. No. 2011.33, 9-22-11)
Sec. R314 SMOKE ALARMS
Section
R314.4 is hereby amended as follows:
R314.4 Power source. Smoke alarms shall receive their primary power from
the building wiring when such wiring is served from a commercial source, and
when primary power is interrupted, shall receive power from a battery. Wiring
shall be permanent and without a disconnecting switch other than those required
for overcurrent protection. Smoke alarms shall be interconnected either by
hard-wiring or with listed wireless alarms.
Exceptions:
(Ord. No. 2011.33, 9-22-11)
Sec. R315 CARBON MONOXIDE ALARMS
Section
R315.4 is hereby added as follows:
R315.4 Power source. Carbon monoxide alarms shall receive their primary
power from the building wiring when such wiring is served from a commercial
source, and when primary power is interrupted, shall receive power from a
battery. Wiring shall be permanent and without a disconnecting switch other
than those required for overcurrent protection. Carbon monoxide alarms shall be
interconnected either by hard-wiring or with listed wireless alarms.
Exceptions:
1. Carbon monoxide alarms shall be permitted to be
battery operated when installed in buildings without commercial power or where
the alterations or repairs do not result in the removal of interior wall or
ceiling finishes exposing the structure.
2. Hard-wiring of carbon monoxide alarms in existing
areas shall not be required where the alterations or repairs do not result in
the removal of interior wall or ceiling finishes exposing the structure, unless
there is an attic, crawl space or basement available which could provide access
for hard wiring without the removal of interior finishes.
(Ord. No. 2011.33, 9-22-11)
Sec. R319 SITE ADDRESS
Section
R319.1 is hereby amended as follows:
Section R319.1 Address numbers. Buildings shall have approved address numbers,
building numbers or approved building identification placed in a position that
is plainly legible and visible from the street or road fronting the property.
The actual size, color, and field placement of addresses numbers shall be as
specified in the Tempe Zoning and Development Code.
Exceptions: Buildings constructed prior to January 20, 2005 may replace missing address
numbers with numbers that are a minimum 4 inches (102mm) high with a minimum
stroke width of ½ inch (12.7mm) that have a color contrast with the background
color of at least fifty (50%) percent.
(Ord. No. 2011.33, 9-22-11)
Sec. R322 FLOOD-RESISTANT CONSTRUCTION
Section R322.1 is hereby amended as follows:
R322.1 General.
Buildings and structures constructed in whole or in part in flood hazard areas
(including A or V Zones) as established in Table R301.2(1) shall be designed
and constructed in accordance with the Tempe City Code, Chapter 12 and applicable
provisions contained in this section.
(Ord. No. 2011.33, 9-22-11)
Sec. R324 BUILDING SECURITY.
Section R324 is hereby added as follows:
Section R324.1. Scope. The
provisions of this chapter shall apply to openings into dwelling units and to
openings between attached garages and dwelling units. Door openings, including vehicular access
doors in enclosed attached garages shall be in accordance with the provisions
of this chapter.
Exceptions:
1.
An opening in an
exterior wall when all portions of such openings are more than 12 feet (3658
mm) vertically or 6 feet (1829 mm) horizontally from an accessible surface of
any adjoining yard, court, passageway, public way, walk, breezeway, patio,
planter, porch or similar area.
2.
An opening in an
exterior wall when all portions of such openings are more than 12 feet (3658
mm) vertically or 6 feet (1829 mm) horizontally from the surface of any
adjoining roof, balcony, landing, stair tread, platform or similar structure or
when any portion of such surface is itself more than 12 feet (3658 mm) above an
accessible surface.
3.
Any opening in a
roof when all portions of such roof are more than 12 feet (3658 m) above an
accessible surface.
4.
Openings when the
small dimension is 6 inches (152 mm) or less, provided that the closest edge of
the opening is at least 36 inches (914 mm) from the locking device of the door
or window assembly.
5.
Openings
protected by required fire door assemblies having a fire-endurance rating of
not less than 45 minutes.
Section R324.2.1. General. Swinging doors
shall be one of the following:
1.
Wood flush‑type
door 1‑3/4 inches thick minimum.
2.
Wood panel‑type
door 1‑3/4 inches thick minimum with all panels fabricated from material
not less than 3/8 inch in thickness; provided all shaped portions of the panels
are not less than 1/4 inch thick.
3.
Ferrous metal
doors of solid or hollow core construction with surfaces not less than 24 gauge
in thickness.
4. Other metal doors with surfaces not less than
the equivalent of 16 gauge sheet metal (0.06 inch) in thickness.
Section R324.2.2. Locking hardware. Single swinging
doors and the active leaf of doors in pairs shall be equipped with an approved
exterior key operating deadbolt or locking device as follows:
1.
Strike deadbolts
with a minimum throw of one inch and an embedment of not less than 5/8 inch
into the holding device receiving the projected bolt.
2.
Hook shape or
expanding lug deadbolts with a minimum throw of 3/4 inch.
3. Deadbolts or locks which automatically activate two or
more deadbolts with an embedment of not less than l/2 inch into the holding
device receiving the projected bolts.
The inactive leaf of doors
in pairs shall be equipped with manually or automatically operated hardened
bolts at the top and bottom, with an embedment not less than 1/2 inch into the
device receiving the projected bolt.
Cylinder guards shall be installed on all mortise or
rim‑type cylinder locks whenever the cylinder projects beyond the face of
the door or is otherwise accessible to gripping tools.
Section R324.3 Windows. Window assemblies regulated by this chapter which are
designed to be openable shall be constructed and installed so as to prohibit
raising, sliding, or removal of the moving section while in the closed and
locked position, unless such windows are protected by approved metal bars,
screens or grilles. Louvered windows
regulated by this chapter shall be protected by approved metal bars or grilles.
Section
R324.4 Upward acting doors. Upward acting doors shall be secured with a cylinder lock,
padlock with a hardened steel shackle and hardened steel hasp, metal slide bar,
bolt or equivalent device, unless secured by electric power operation.
Cylinder guards shall be installed on all mortise or
rim‑type cylinder locks whenever the cylinder projects beyond the face of
the door or is otherwise accessible to gripping tools.
(Ord. No. 2011.33, 9-22-11)
Sec. R401 GENERAL.
Section R401.1 is hereby amended as follows:
Section R401.1 Application. The provisions of this chapter shall control the
design and construction of the foundation and foundation spaces for all
buildings. In addition to the provisions of this chapter, the design and
construction of foundations in areas prone to flooding as established by Table
R301.2 (1) shall meet the provisions of Section R322. Wood foundations shall be
designed and installed in accordance with AF&PA WPF. Where a design is not provided, the minimum
foundation requirements for stud and concrete masonry bearing walls shall be as
set forth in Table R403.1.
Exception: The provisions of this chapter shall be permitted to
be used for wood foundations only in the following situations:
1. In buildings that have no more than two
floors and a roof.
2. When interior basement and foundation walls are constructed at
intervals not exceeding 50 feet (15 240 mm).
Wood foundations in Seismic Design Category D0, D1 or D2 shall be designed in accordance with accepted
engineering practice.
Section
R401.3 is hereby amended as follows:
R401.3 Drainage.
Surface drainage shall be diverted to a storm sewer conveyance or other
approved point of collection in accordance with the provisions in the Tempe
City Code, Chapter 12. Lots shall be graded to drain surface water away from
foundation walls. The grade shall fall a minimum of 6 inches (152 mm) within
the first 10 feet (3048 mm).
Exception:
Where lot lines, walls, slopes or other physical barriers prohibit 6 inches
(152 mm) of fall within 10 feet (3048 mm), drains or swales shall be
constructed in accordance with the provisions in the Tempe City Code, Chapter
12 to ensure drainage away from the structure. Impervious surfaces within 10
feet (3048 mm) of the building foundation shall be sloped a minimum of 2
percent away from the building.
(Ord. No. 2011.33, 9-22-11)
Sec. R403
FOOTINGS.
Table R403.1 is hereby amended as follows:
TABLE R403.1
FOUNDATIONS FOR STUD AND CONCRETE MASONRY BEARING WALLS – MINIMUM
REQUIREMENTS.
|
Number of Floors Supported by the Foundation3 |
Thickness
of Foundation Wall2 (inches
– Nominal Dimension) |
Width
of Footing2,4 (W)\ (inches) |
Thickness
of Footing (inches) |
Depth
Below Undisturbed Soil (inches) |
|||
|
Stud
Wall |
|||||||
|
Concrete |
Masonry5 |
Stud Wall1 |
Masonry Wall |
Stud Wall |
Masonry
Wall |
||
|
1 |
6 |
6 |
12 |
16 |
6 |
8 |
12 |
|
2 |
8 |
8 |
15 |
20 |
7 |
8 |
18 |
|
3 |
10 |
8 |
18 |
24 |
8 |
8 |
24 |
For
SI: 1 inch = 25.4 mm, 1 pound per square foot = 0.0479 kN/m2.
1. Interior stud bearing walls may be supported by
isolated footings. The footing width and length shall be twice the width shown
in this table and the footings shall be spaced not more than 6 feet (1,829mm)
on center.
2. A minimum of two (2) #4 reinforcing bars
(minimum grade 40) are required in the footing/stem concrete. If metal hold
downs are used, one #4 horizontal reinforcing bar must be placed within the top
6 of the stem wall.
3. Foundations may support a roof in addition to the
stipulated number of floors. Foundations supporting roofs only shall be as
required for supporting only one floor.
4. Isolated columns carrying loads in excess of
750 lbs shall be supported on minimum 4 square feet of footing, with minimum
width of 24 inches. Maximum bearing pressure from service loads shall not
exceed 1500 psf unless recommended by the soils report.
5. Foundation wall width may not be less than the
width of the masonry wall.
(Ord. No. 2011.33, 9-22-11)
Sec. R614 Earthen Structures.
Section
R614 is hereby added as follows:
Section R614.1 General.
Earthen structures with any site condition may be designed with accepted
engineering practice for earthen wall structures and with provisions of this
section.
Section
R614.1.1 Earthen materials.
This section shall establish minimum standards for safety for construction of
earthen materials structures, collectively known as adobe, burnt adobe, rammed
earth, and hydraulic pressed unit connection.
Section R614.1.2 Professional registration
required. Plans and
specifications designed under the provisions of R614 shall be prepared by a
registered professional architect or engineer licensed in the state for which
the project is to be constructed.
Section R614.2 Minimum thickness. This minimum thickness of earthen
structures shall be designed to limit tension to zero unless tensile
reinforcement is provided. Walls shall be designed to meet forces prescribed by
IBC Chapter 16. The measurement of height of walls shall be the distance
between points of lateral support. Wall
thickness shall be measured from face to face of each wall withe. The thickness
of walls using racked joints shall be the surface to surface distance of the
mortar joints. The withes of wall sections shall not be combined without cross
bonding of the masonry units throughout the structural element. Cross bonding shall mean overlapping of not
less than 1/3 of the dimension of the masonry units.
Section R614.3 Support conditions. Earthen structures shall be supported on a
solid concrete, solid masonry foundation system the width of which shall be not
greater than 1/6 inch narrower than the earthen structure which it supports.
Earthen structures shall not be less than 6 inches above adjacent grade.
Section R614.4 Corbelled
wall elements. The
maximum corbelled projection beyond the face of the wall shall not be more than
4 inches. Such corbelled projections shall add additional thickness to the
wall, the opposite face of the wall remaining plane with the primary wall
plane.
Section R614.5 Moisture barrier. A moisture barrier equal to 30 lb,
asphalt impregnated building paper, or equivalent moisture resistant barrier,
shall be installed between the supporting foundation and the earthen material.
Section R614.6 Allowable stresses. Allowable compressive, tensile and shear
stresses in earthen structures shall not exceed the values prescribed in table
R614.6.A. In determining the stresses, the effects of all loads and conditions
of loading and the influences of all forces affecting the design and strength
of the several parts shall be considered. Bolt values shall not exceed those
set forth in International Building Code Table 2109.3.3.1.
Section
R614.6.1 Combined units.
In walls composed of different kinds or grades of units, materials or mortars,
the maximum stress shall not exceed the allowable stress for the weakest of the
combination of units, materials and mortars of which the wall is composed. The
net thickness of any facing unit of earthen materials used to resist stress
shall not be less than 3 inches (76 mm).
When dissimilar
materials, (e.g. concrete masonry or steel), is used to support earth wall
construction, such elements shall be structurally isolated from other earth
wall elements. The design shall recognize, with specific detailing, the effects
shrinkage of the earth wall construction may have on the structural integrity
of the structure.
Table R614.6.A
Allowable
stresses for empirical design of earthen wall structures
|
Strength of unit, gross area |
Allowable stresses Cross-sectional area |
Note 1 |
|
|
Compression |
300 psi |
Normal loading Concentrated loading |
30 psi 45 psi |
|
Modulus of rupture |
55 psi |
Allowable tension without tensile reinforcing |
0 psi |
|
Shear |
N/a |
With special inspection Without special inspection |
8 psi 4 psi |
|
Modulus of elasticity |
60,000 psi |
Allowable deflection |
Less than 1/2% |
Notes:
1. Gross cross-sectional area shall be calculated
on the actual rather than the nominal dimensions.
Section
R614.7 Lateral support.
Earthen walls shall be laterally supported in the vertical direction and at
intersection with other earthen walls. Support at the top of the wall shall be
in accordance with one of the methods in R614.7.1 or R617.7.2.
Section R614.7.1 Bond beams. A continuous bond beam system embedded in
the earthen walls, designed to provide lateral support for the walls without
the aid of additional bracing elements such as roof diaphragm. Bond beams of
concrete or masonry shall be not less than the width of the wall, minus 6 inches
(152 mm).
Section R614.7.1.1 Bond beam
anchorage. Bond beams shall be anchored to earthen walls
at intervals of not over 48 inches (1219 mm) by a connection with shear
strength of not less than the shear forces in both directions. The shear
between a cast in place concrete bond beam and the earthen wall shall not
exceed 1/8 the dead load at the base of the bond beam unless alternate
attachment is provided compatible with the allowable stresses in Table R614.6.A
or International
Building Code Table 2109.3.3.1.
Section R614.7.2
Roof diaphragm. A roof diaphragm complying with other provisions of this
code adequate to provide lateral support may be used to brace earthen walls.
Anchorage shall be tie beams as specified in R614.7.2.2 or other anchorage methods
of equal strength.
Section
R614.7.2.1 Tie beams. A
tie beam is a beam built into the earthen wall for the purpose of anchoring the
roof diaphragm and transferring the lateral perpendicular and parallel forces.
Tie beams shall be provided for all earthen walls laterally braced by a roof
diaphragm.
Section R614.7.2.2 Tie beam anchorage. Tie beams shall be anchored to earthen
walls at intervals of not over 48 inches (1219 mm) by a connection with shear
strength of not less than the shear forces in both directions. The shear
between a cast in place concrete or masonry tie beam and the earthen wall shall
not exceed 1/8 the dead load at the base of the bond beam unless alternate
attachment is provided compatible with the allowable stresses in Table R614.6.A
or International Building Code Table 2109.3.3.1.
Section R614.8 Lintels.
Earthen walls over openings shall be supported by steel lintels, reinforced
concrete or masonry lintels or earthen material arches designed to support load
imposed. Lintels shall not be supported by rigid structural columns, frames or
posts with rigidities greater than the earthen wall unless the design allows
for the potential for differential settlements. Small openings less than 12
inches may be constructed without structural lintels.
Section R614.9 Shear walls.
Earthen walls subject to in-plane loads shall be designed to be tension free
unless tensile reinforcement is provided. Solid panels less than 4 feet (1219
mm) shall not be considered shear walls.
Section R614.10 Opening jambs.
Portions of walls between openings shall be constructed with lengths of not
less than 1 1/2 times the thickness of the wall in which they occur.
Section R614.11
Freestanding piers. Piers independent of earthen walls shall be designed to
support vertical and horizontal loads unless braced by other elements of the
structure. Tensile reinforcement shall be provided where tension occurs. When
structural posts or columns are provided within the pier or attachments shall
be provided to the earthen wall system to laterally secure it.
Section R614.11.1 Pier cap. A solid concrete cap shall be provided at
the top of load bearing piers under all concrete loads. The cap shall cover not
less than 50% of the top pier.
Section R614.12
Chases. Chases and recesses in earthen walls shall not be deeper than 1/3
the thickness of the wall thickness. The maximum length of a horizontal chase
or horizontal projection shall not exceed 4 feet (1219 mm), and shall have at
least 8 inches (203 mm) of earthen construction in back of the chases and
recesses and between adjacent chases or recesses and at least 12 inches (305
mm) between the chase and the jambs of openings.
Chases and
recesses in earthen walls shall be designed and constructed so as not to reduce
the required strength or required fire resistance of the wall and in no case
shall a chase or recess be permitted within the required area of a pier.
Earthen walls directly above chases or recesses wider than 16 inches (406 mm)
shall not be supported on non-combustible lintels.
Section R614.13
Stack bond. When the earthen wall is constructed of units, (e.g. adobe
brick), units shall not be laid in stack bond. Units shall, in all locations
throughout the wall system, overlap the courses below by not less than 1/3 the
dimension of the unit.
Exception: Ornamental non-structural elements may be
laid in stack bond if properly tied to the main structure.
Section R614.14 Metal
reinforcement. All walls shall be anchored at their intersections, at
vertical intervals of not more than 16 inches (406 mm) with joint reinforcement
of at least 9 gage when using earthen units, (e.g. adobe block). Horizontal
reinforcement shall be used throughout the wall system and be continuous at the
intersections. Reinforcement used throughout the wall system shall be not more
than 4 inches narrower than the wall thickness.
Section R614.15 Veneer.
All veneers using earthen materials shall be installed in accordance with this
section. Such veneers shall be installed with a non-combustible foundation, over
concrete masonry, a backing of wood or cold-formed steel and the veneer shall
be not less than 4 inches (101 mm) or greater than 8 inches (203 mm) in
thickness.
Section
R614.15.1 Anchorage.
Earthen units shall be anchored to the supporting wall with a
corrosion-resistant veneer tie system mechanically attached to continuous
horizontal joint reinforcement continuously installed in the veneer bed joint
not less than 16 inches (406 mm) on center vertically. When earth mortar systems are used, the tie
system shall prevent the accumulation of mortar at the base of the veneer.
Conventional brick ties shall not be used to anchor earth units.
Section R614.15.2 Air space. The veneer shall be separated from the
sheathing by an air space of a minimum of 1 inch (25 mm) but not more than 2
inches (51 mm). A weather-resistant membrane of 15 pound asphalt-saturated felt
shall be provided except when veneer is applied over concrete masonry or
concrete backing.
Section R614.15.3 Flashing. Approved corrosion-resistive flashing
shall be provided in the exterior wall envelope in such a manner as to prevent
entry of water into the wall cavity or penetration of water into the building
structural framing components. The flashing shall extend to the surface of the
exterior wall finish and shall be installed to prevent water from reentering
the exterior wall envelope. Flashing shall be located beneath the first course
of veneer, and at other points of support, including structural floors, shelf
angles and lintels. Approved corrosion-resisting flashing shall be installed at
all of the following locations:
1. At top of all exterior window and door
openings in such a manner as to be leak proof.
2. At the intersection of chimneys or other
masonry construction with frame or stucco walls, with projection lips on both
sides under stucco copings.
3.
Under
and at the ends of masonry, wood or metal copings and sills.
4. Where exterior porches, decks or stairs
attach to a wall or floor assembly of wood-frame construction.
5. At wall and roof intersections.
Section R614.15.4 Weep holes. Weep holes shall be provided in the
outside withe of masonry walls at a maximum spacing of 33 inches (838 mm) on
center. Weep holes shall not be less than 3/16 inches (4.8 mm) in
diameter. Weep holes shall be located immediately
above the flashing.
Section R614.16 Buttresses. Earthen
walls used as buttresses shall not extend beyond an average length
perpendicular to the wall to be braced a distance of 6 feet (1830 mm) without
consideration to out-of-plane bending of the buttress.
Section R614.17 Gable end
walls. Gable end walls shall be constructed using veneer construction as
required by R614.15 or shall be provided with lateral bracing to prevent
overturn.
Section R614.18 Ledgers.
Ledgers shall not be used to support vertical live and dead loads in excess of
75 pounds per lineal foot unless the tension in the wall fur to bending from
out-of-plane loads and the eccentric load from the ledger is zero.
Section R614.19
Material standards. The materials used in earthen wall structures shall
comply with the following material standards. For each of the tests prescribed
in theses standards, five full size sample units shall be selected at random
from each lot of units of fraction thereof produced. Mass wall systems such as
rammed earth shall provide five tests for each required standard test series.
Section
R614.19.1 Manufacturers of earthen materials. Established manufacturers of earthen materials shall
certify compliance with these standards. Copies of their periodic testing shall
be supplied to the manufacturer to designers and users of earthen materials
shall include the actual dimensions of units, not nominal dimensions.
Section
R614.19.2 Onsite earthen materials. Earthen units, mortar, rammed earth wall materials mined, mixed,
formulated, and/or molded on site shall be tested for compliance with these
standards. For individual structures, a set of tests shall be provided for the
first 2500 square feet of wall and an additional test for each additional 2500
square feet or portion thereof in the structure. At least one set of tests
shall be made for each structure and for each 2500 square feet of patio wall.
The fabricator of the materials used in the project shall certify in writing to
the building official compliance with these standards. The certification shall
include the number of units site molded, size of the units, volume of material
used as mortar, dates of fabrication, and results of testing of the material.
If materials from established manufacturers and onsite materials are used in
the project, copies of records including sources, quantities, and location of
use within the structure shall be provided to the building official upon
request.
Section
R614.19.3 Categories of earthen materials. Type I, II, III, and IV earthen materials are approved for
use in construction of projects designed in accordance with R614.
Exception: Type I adobe shall only be used for
repairs and small additions in which new walls do not exceed 10% of the surface
area of existing walls of Type I construction and for structures constructed of
a similar material system and for projects requiring this class of materials to
meet historic guidelines.
Section
R614.19.3.1 Required plaster veneer. Adobe of Type I and II shall be protected on the exterior with
exterior plaster meeting the requirements of IBC Section 2512 applied over wire
lath. Type I and II adobe shall not be used within 4 inches (102 mm) of the
floor or at the top of parapet walls or near potential sources of water which
may affect the stability of the earth wall system. Other types of adobe may be
left unplastered and may be used without separation from the floor.
Section R614.19.3.2 Adobe units and
mortar. Moisture
resistant stabilized adobe units and mortar shall meet the following testing
standards as indicated in Table R614.19.3.2.
Type S Portland cement mortar may be used for Type II, III, and IV adobe
in lieu of earth mortar.
Table
R614.19.3.2
|
Material type |
Dry
compression 614.19.3 |
Wet
compression 614.19.4 |
Modulus of
rupture 614.19.5 |
Absorption
<2.5% 614.19.6 |
Absorption
<5.0% 614.19.7 |
Moisture
content 614.19.8.1 |
|
I |
X |
|
X |
|
|
X |
|
II |
X |
|
X |
|
X |
X |
|
III |
X |
|
X |
X |
|
X |
|
IV |
|
X |
X |
|
|
X |
“X” indicates that material must pass the test standards
prescribed in the section.
Section
R614.19.3.3 dry compression strength. Determine the compressive strength of the required number of
samples as required by R614.19 in accordance with the following procedures.
Section
R614.19.3.3.1 Dry the specimen. Dry the specimen at a temperature of 85¡F +- 15¡F (29¡C +- 9¡C)
in an atmosphere having relative humidity of not more than 50 percent. Weigh
the specimen at one-day intervals until constant weight is attained.
Section
R614.19.3.3.2 Cap the specimen. The specimen may be suitably capped with calcined gypsum mortar
or the bearing surfaces may be rubbed smooth and true. Then calcined gypsum is used for capping,
conduct the test after the capping has set and the specimen has been dried to
constant weight in accordance with item 1 of this section.
Section
R614.19.3.3.3 Test the specimen. Test the specimens in the
position in which the earthen unit is designed to be used. And bed on and cap with a felt pad not less
then one-eighth (1/8) inch (3.2 mm) or more than one-fourth (1/4) inch (6.4 mm)
in thickness.
Section
R614.19.3.3.4 Testing equipment. The loading head shall completely cover the bearing area of the
specimen and the applied load shall be transmitted through a spherical bearing
block of proper design. The speed of the moving head of the testing machine shall
not be more than 0.05 inches (1.27 mm) per minute.
Section R614.19.3.3.5 Reporting results. Calculate the average compressive
strength of the specimens tested and report this as the compressive strength of
the block. Units shall have an average dry compressive strength of 300 psi
(2068 kPa) and no individual unit may have a strength of less than 250 psi
(1724 kPa).
Section
R614.19.4 Wet compression strength. Determine the compressive strength of the required number of
specimen as required by R614.19 in accordance with the following procedures:
Section
R614.19.4.1 Cap the specimen. The specimens may be suitably capped with a capping material
compatible with water saturation or the bearing surfaces may be rubbed smooth
and true.
Section
R614.19.4.2 Wetting the specimen. Submerge the specimen
under water for not less than 8 (eight) hours or longer as required, until
fully saturated.
Section R614.19.4.3 Test the specimen.
Immediately test the specimen in the position in which the earthen unit
is designed to be used. Bed on and cap with a felt pad not less than 1/8 inch
(3.2 mm) or more than 1/4 inch (6.4 mm) in thickness.
Section R614.19.4.4 Testing equipment. The loading head shall completely cover
the bearing area of the specimen and the applied load shall be transmitted
through a spherical bearing block of proper design. The speed of the moving
head of the testing machine shall not be more than 0.05 inches (1.27 mm) per
minute.
Section R614.19.4.5 Reporting results. Calculate the average compressive strength
of the specimens tested and report this as the compressive strength of the
block. Adobe units shall have an average wet compressive strength of 300 psi
(2068 kPa). Five samples shall be tested and no individual unit may have a wet
compressive strength of less than 250 psi (1724 kPa).
Section R614.19.5 Modulus of rupture. Adobe units shall have an average modulus
or rupture of 50 psi (345 kPa) when tested in accordance with the following
procedures. Five samples shall be tested and no individual unit shall have a
modulus of rupture less than 35 psi (241 kPa)
Section R614.19.5.1 Support conditions. A cured unit shall be simply supported by
2 inch diameter (51 mm) cylindrical support located 2 inches (51 mm) in from
each end and extending the full width of the unit.
Section
R614.19.5.2 Loading conditions. A 2 inch diameter (51 mm) cylinder shall be placed at midspan
parallel to the supports.
Section R614.19.5.3 Testing procedure. A vertical load shall be applied to the
cylinder at the rate of 500 pounds per minute (37 N/s) until failure occurs.
Section
R614.19.5.4 modulus of rupture determination. The modulus of rupture shall be determined by the
following formula:
Equation
R614.19.5.4.1
Fr = 3WLs/2bt2
Where, for this purpose of this section only:
B = width of the
test specimen measured parallel to the loading cylinder, inches (mm)
Fr = modulus of
rupture, psi (Mpa)
Ls = distance
between supports, inches (mm)
T = thickness of
the test specimen measured parallel to the distance of load, inches (mm)
W = The applied
load at failure, pounds (N)
Section R614.19.6 Absorption less than
2.5%. A 4 inch (102 mm) cube, cut from an adobe
unit fired to a constant weight in a ventilated oven at 212¡ F
to 239¡ F, shall not absorb more then 2 1/2
percent moisture by weight when placed upon a constantly water-saturated,
porous surface for 7 days. A minimum of five specimens shall be tested and each
specimen shall be cut from a separate unit.
Section R614.19.7 Absorption less than
5.0%. A 4 inch (102 mm)
cube, cut from an adobe unit fired to a constant weight in a ventilated oven at
212¡ F to 239¡ F,
shall not absorb more then 2 1/2 percent moisture by weight when placed upon a
constantly water-saturated, porous surface for 7 days. A minimum of five
specimens shall be tested and each specimen shall be cut from a separate unit.
Section
R614.19.8 Additional requirements. All earthen units shall meet the following requirements:
Section
R614.19.8.1 Moisture content requirements. Earthen units shall have a moisture content not exceeding
4 percent by weight at the time of use.
Section
R614.19.8.2 Shrinkage cracks. All earthen units shall not contain more than three shrinkage
cracks and any single shrinkage cracks shall not exceed 3 inches (76 mm) in
length or 1/8 inch (3.2 mm) in width.
Section R614.19.8.3 Soil requirements. Soil used for moisture resisting adobe
units and mortar shall be chemically compatible with the stabilizing material.
The soil shall contain sufficient clay to bind the particles together without
the air of stabilizers. The soil shall contain not more than 0.2 percent of
water-soluble salts.
Section
R614.19.9 Cement stabilized rammed earth. Cement stabilized rammed earth shall meet the following
standards. The installer of the wall system shall comply with the requirements
of R614.19.2 for frequency testing.
Section
R614.19.9.1 Testing before construction. The installer of cement stabilized rammed earth shall provide the
following testing before issuance of a building permit.
Section
R614.19.9.2 Materials from a licensed sand and gravel producer. A copy of Proctor ASTM D 698 shall be
provided for each soil type and source or combination of sources. Periodic
testing as provided by the supplier may be supplied to meet this requirement.
The soil shall contain not more than 0.2 percent of water-soluble salts.
Section
R614.19.9.3 Material mined and mixed on site. A copy of ASTM D 698, ASTM C 117, ASTM C 136, and ASTM D
4318 shall be provided for each soil type and source or combination of sources.
Such testing shall be repeated as required to assure that all materials to be
used have been tested and are represented by the tests. The soil shall contain
not more than 0.2 percent of water-soluble salts.
Section
R614.19.9.4 Testing required during construction. The installer of cement stabilized rammed
earth shall provide the following tests made during the construction process. A
certified testing laboratory shall provide field density tests for comparison
to the pre-construction Proctor ASTM D 698, percent moisture ASTM D 2216, dry
density ASTM D 698, and percent moisture ASTM D 1556.
Cement stabilized
rammed earth walls shall meet or exceed 95% maximum dry density (ASTM D 698).
Samples taken from the wall shall exceed 300 psi compression (ASTM D 1633) 14
days after placement.
(Ord. No.
2011.33, 9-22-11)
Sec. R702 INTERIOR COVERING.
Table
R702.3.5 is hereby amended as follows:
TABLE R702.3.5
MINIMUM THICKNESS
AND APPLICATION OF GYPSUM BOARD
|
THICKNESS OF GYPSUM BOARD (inches) |
APPLICATION |
ORIENTATION OF GYPSUM BOARD TO FRAMING |
MAXIMUM SPACING OF FRAMING MEMBERS (inches o.c.) |
MAXIMUM SPACING OF FASTENERS (inches) |
SIZE OF NAILS FOR APPLICATION TO WOOD FRAMINGc |
|
|
Nailsa |
Screwsb |
|||||
|
1/2 |
Ceiling |
Either direction |
16 |
7 |
12 |
13 gage, 1-3/8 long, 19/64
head; 0.098 diameter, 1-1/4 long, annular-ringed; 5d cooler nail,
0.086 diameter, 1-5/8 long, 15/64 head; or gypsum board
nail, 0.086 diameter, 1-5/8 long, 9/32 head. |
|
Ceilingd |
Perpendicular |
24 |
7 |
12 |
||
|
Wall |
Either direction |
24 |
8 |
12 |
||
|
Wall |
Either direction |
16 |
8 |
16 |
||
|
5/8 |
Ceiling |
Either direction |
16 |
7 |
12 |
13 gage, 1-5/8 long, 19/64
head; 0.098 diameter, 1-3/8 long, annular-ringed; 6d cooler nail,
0.092 diameter, 1-7/8 long, ¼ head; or gypsum
board nail 0.0915 diameter, 1-7/8 long, 19/64
head. |
|
Ceilinge |
Perpendicular |
24 |
7 |
12 |
||
|
Wall |
Either direction |
24 |
8 |
12 |
||
|
Wall |
Either direction |
16 |
8 |
16 |
||
|
Application with adhesive |
||||||
|
1/2 or 5/8 |
Ceiling |
Perpendicular |
16 |
16 |
16 |
Same as above for 1/2 and
5/8 gypsum board, respectively |
|
Ceilingd |
Either direction |
24 |
12 |
16 |
||
|
Wall |
Either direction |
24 |
16 |
24 |
||
For SI: 1 inch = 25.4 mm.
a.
For application
without adhesive, a pair of nails spaced not less than 2 inches apart or more
than 21/2 inches apart may be used
with the pair of nails spaced 12 inches on center.
b.
Screws shall be in
accordance with Section R702.3.6. Screws for attaching gypsum board to
structural insulated panels shall penetrate the wood structural panel facing
not less than 7/16 inch.
c.
Where cold-formed
steel framing is used with a clinching design to receive nails by two edges of
metal, the nails shall be not less than 5/8 inch longer than the gypsum board thickness and shall
have ringed shanks. Where the cold-formed steel framing has a nailing groove
formed to receive the nails, the nails shall have barbed shanks or be 5d, 13½ gage, 15/8 inches long, 15/64-inch
head for 1/2-inch gypsum board; and 6d,
13 gage, 17/8 inches long, 15/64-inch
head for 5/8-inch gypsum board.
d.
On ceiling
applications to receive a water-based texture material, either hand or spray applied,
the gypsum board shall be applied perpendicular to framing. When applying a
water-based texture material, the minimum gypsum board thickness shall be 1/2-inch for 16-inch on center
framing and ⅝-inch for 24 inch on center framing or 1/2-inch sag-resistant gypsum
ceiling board shall be used.
e.
Type X gypsum
board for garage ceilings beneath habitable rooms shall be installed
perpendicular to the ceiling framing and shall be fastened at maximum 6 inches O.C.
by minimum 1-7/8 inches 6d coated nails or
equivalent drywall screws.
(Ord. No. 2011.33, 9-22-11)
Sec. R1007 CLEAN BURNING FIREPLACES.
Section
R1007 is hereby added as follows:
Section R1007.1 Clean Burning
Fireplaces. The
purpose of this standard is to regulate fireplaces, woodstoves, or other
solid-fuel burning devices to reduce the amount of air pollution caused by
particulate matter and carbon monoxide.
The effective date of the regulations and prohibitions
set forth in this standard took effect on December 31, 1998.
Definitions:
For purposes of this standard, the following words and terms shall be defined
as follows:
FIREPLACE
means a built in place masonry hearth and fire chamber or a factory-built
appliance, designed to burn solid fuel or to accommodate gas or electric log
insert or similar device, and which is intended for occasional recreational or
aesthetic use, not for cooking, heating, or industrial processes.
SOLID FUEL
includes but is not limited to wood, coal, or other nongaseous or non-liquid
fuels, including those fuels defined by the Maricopa County Air Pollution
Control Officer as inappropriate fuel to burn in residential wood-burning
devices.
WOODSTOVE means a solid-fuel burning heating appliance
including a pellet stove, which is either freestanding or designed to be
inserted into a fireplace.
Section R1007.2. Installation restrictions. On or after the effective date, no person, firm or
corporation shall construct or install a fireplace or a woodstove, and the
building official shall not approve or issue a permit to construct or install a
fireplace or a woodstove, unless the fireplace or woodstove complied with one
of the following:
1.
A fireplace which
has a permanently installed gas or electric log insert.
2.
A fireplace,
woodstove, or other solid-fuel burning appliance which has been certified by
the United States Environmental Protection Agency as conforming to 40 Code of
Federal Regulations Part 60, Subpart AAA as in effect on July 1, 1990.
3.
A fireplace,
woodstove or other solid-fuel burning appliance which has been tested and
listed by a nationally recognized testing agency to meet performance standards
equivalent to those adopted by 40 Code of Federal Regulations Part 60, Subpart
AAA as in effect on July 1, 1990.
4.
A fireplace,
woodstove or other solid-fuel burning appliance which has been determined by
the Maricopa County Air Pollution Control Officer to meet performance standards
equivalent to those adopted by 40 Code of Federal Regulations Part 60, Subpart
AAA as in effect on July 1, 1990.
5. A fireplace which has a permanently installed
woodstove insert which complies with subparagraphs 2, 3, or 4 above.
Section R1007.3. The
following installations are not regulated by this standard and are not
prohibited by this standard:
1. Furnace, boilers, incinerators, kilns, and other
similar space heating or industrial process equipment.
2. Cook-stoves, barbecue grills, and similar appliances
designed primarily for cooking.
3. Fire pits, barbecue grills, and other outdoor
fireplaces.
Section R1007.4. Fireplace or Woodstove Alterations
Prohibited:
Section R1007.4
.1. On or after the effective
date, no person, firm or corporation shall alter or remove a gas or electric
log insert or a woodstove insert from a fireplace for purposes of converting
the fireplace to directly burn wood or other solid fuel.
Section R1007.4
.2. On or after the effective
date, no person, firm or corporation shall alter a fireplace, woodstove or
other solid fuel burning appliance in any manner that would void its
certification or operational compliance with the provisions of this standard.
Section R1007.5.
Permits Required. In addition
to the provisions and restrictions of this standard, construction, installation
or alteration of all fireplaces, woodstoves and other gas, electric or
solid-fuel burning appliances and equipment shall be done in compliance with
provisions of this Code and shall be subject to the permits and inspections.
(Ord. No. 2011.33, 9-22-11)
Sec. M1307 APPLIANCE INSTALLATION.
Section M1307 is hereby amended as follows:
Section M1307.3. Elevation
of ignition source. 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 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
openings shall be considered to be part of the private garage.
Exceptions:
1. Elevation of the ignition
source is not required for appliances that are listed as flammable vapor
resistant and for installation without elevation.
2. Direct-vent appliances that obtain all combustion air
directly from the outdoors.
3. Clothes dryers installed in private garages.
Section M1307.7. Liquefied
Petroleum Appliances. LPG appliances shall not be
installed in an attic, pit or other location that would cause a ponding or
retention of gas.
(Ord. No. 2011.33, 9-22-11)
Sec. G2406 APPLIANCE LOCATION.
Section G2406.2 is hereby amended as follows:
Section G2406.2 (303.3). Prohibited locations. Appliances
shall not be located in sleeping rooms, bathrooms, toilet rooms, storage
closets or surgical rooms, or in a space that opens only into such rooms or
spaces, except where the installation complies with one of the following:
1. The
appliance is a direct-vent appliance installed in accordance with the
conditions of the listing and the manufacturer’s instructions.
2. Vented
rooms heaters, wall furnaces, vented decorative appliances, vented gas
fireplaces, vented gas fireplace heaters and decorative appliances for
installation in vented solid fuel-burning fireplaces are installed in rooms
that meet the required volume criteria of Section G2407.5.
3. A
single wall-mounted unvented room heater is installed in a bathroom and such
unvented room heater is equipped as specified in Section G2445.6 and has an
input rating not greater than 6,000 Btu/h (1.76 kW). The bathroom shall meet the required volume
criteria of Section G2407.5.
4. A
single wall-mounted unvented room heater is installed in a bedroom and such
unvented room heater is equipped as specified in Section G2445.6 and has an
input rating not greater than 10,000 Btu/h (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.
6. Liquefied Petroleum (LPG) appliances shall not be
installed in an attic, pit or other location that would cause ponding or
retention of gas.
(Ord. No. 2011.33,
9-22-11)
Sec. G2407 (304) COMBUSTION, VENTILATION AND DILUTION
AIR.
Section M2407.1.1 is hereby added as follows:
Section
G2407.1.1. Prohibited sources. Combustion
air ducts and openings shall not connect appliance enclosures with space in
which the operation of a fan may adversely affect the flow of combustion air.
Combustion air shall not be obtained from an area in which flammable vapors
present a hazard. Fuel-fired appliances shall not obtain combustion air from
any of the following rooms or spaces:
1. Sleeping rooms.
2. Bathrooms.
3. Toilet rooms.
Exception: The
following appliances may be located in sleeping rooms, bathrooms and toilet
rooms:
1. Appliances installed in an enclosure in which all
combustion air is taken from the outdoors and the enclosure is equipped with a
solid weather-stripped door and self-closing device.
2. Direct-vent appliances that obtain all combustion air
directly from the outdoors.
Section M2407.11 is hereby amended as follows:
Section 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 corrosion
resistance, strength and rigidity.
Exception: Within dwellings units, unobstructed stud and joist
spaces shall not be prohibited from conveying 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. A single duct shall not serve both upper and lower
combustion air openings where both such openings are used. The separation
between ducts serving upper and lower combustion 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.
9.
For LPG
appliances, any duct serving the lower opening shall be at the floor level and
slope to the outdoors without traps or pockets.
(Ord. No. 2011.33, 9-22-11)
Sec. G2408 INSTALLATION.
Section G2408.2 (305) is hereby amended as follows:
Section 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
eighteen (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 openings shall
be considered to be part of the private garage.
Exceptions:
1. Elevation of the ignition
source is not required for appliances that are listed as flammable vapor
resistant and for installation without elevation.
2. Direct-vent appliances that obtain all combustion air
directly from the outdoors.
3. Clothes dryers installed in private garages.
(Ord. No. 2011.33, 9-22-11)
Sec. G2415 (404) PIPING SYSTEM INSTALLATION.
Section G2415.4.1 is hereby added as follows:
G2415.4.1 Underground piping. No gas piping shall be permitted under an asphalt,
concrete or other paved surface that adjoins any building or structure unless
installed in a gas-tight conduit or other approved method of venting is
provided.
The conduit shall be of
wrought iron, plastic pipe, steel pipe or other approved conduit material. The
conduit shall be protected from corrosion in accordance with Section G2415.9.
The interior diameter of the conduit shall be not less than one-half inch larger
than the outside diameter of the gas pipe within. The conduit shall extend to a
point not less than 12 inches (305 mm) beyond or 4 inches (102 mm) above the
paved surface. The ends shall not be sealed.
Section G2415.10 (404.10) is hereby amended as follows:
Section G2415.10
(404.10) Minimum burial depth.
Underground piping systems shall be
installed a minimum depth of 12 inches (305 mm) below grade, for metal piping,
and 18 inches for plastic piping.
Section G2415.10.1
is hereby deleted.
(Ord. No. 2011.33, 9-22-11)
Sec. G2417(406) INSPECTION, TESTING AND PURGING.
Section G2417.4 (406.4) is hereby amended as
follows:
Section G2417.4 (406.4) Test pressure measurement. Test pressure shall be measured with a manometer or
with a pressure-measuring device designed and calibrated to read, record, or
indicate a pressure loss caused by leakage during the pressure test period. The
source of pressure shall be isolated before the pressure tests are made.
Section G2417.4.1 (406.4.1) is hereby amended as
follows:
Section G2417.4.1 (406.4.1)Test pressure. The test pressure to be used shall be no less than ten
(10) pounds per square inch (69 kPa) gauge pressure, or where approved by the
building official, the piping and valves may be tested at a pressure of at least
six (6) inches (152.4 mm) of mercury, measured with a manometer or slope gauge.
For welded piping, and for piping carrying gas at pressures in excess of
fourteen (14) inches (0.4 m) water column pressure, the test pressure shall be
no less than sixty (60) pounds per square inch (413 kPa). Where the test
pressure exceeds 125 psig (862 kPa gauge), the test pressure shall not exceed a
value that produces a hoop stress in the piping greater than 50 percent of the
specified minimum yield strength of the pipe.
Section G2417.4.2 is hereby amended as follows:
Section G2417.4.2 Test duration. Test duration shall be not less fifteen (15) minutes
or for welded pipe and piping carrying gas at pressures in excess of fourteen
(14) inches (0.4 m) water column pressure, the test duration shall be not less
than thirty (30) minutes. The duration of the test shall not be required to
exceed 24 hours.
Section G2417.4.3 is hereby added as follows:
Section
G2417.4.3 Test gauges. Tests required
by this Code which are performed utilizing dial gauges shall be limited to
gauges having the following pressure increments or graduations.
Section
G2417.4.3.1. Required pressure tests
of ten (10) pounds (69 kPa) or less shall be performed with gauges having
increments of one-tenth (1/10) pound (0.69 kPa) or less.
Section
G2417.4.3.2. Required pressure tests exceeding ten (10)
pounds (69 kPa) but less than one hundred (100) pounds (690 kPa) shall be
performed with gauges having increments of one pound (7 kPa) or less.
Section
G2417.4.3.3. Required pressure tests
exceeding one hundred (100) pounds (690 kPa) shall be performed with gauges
having increments 2 psi (14 kPa) or less.
Section G2417.4.3.4. Pressure tests required by this
code, which are performed utilizing dial gauges, shall be limited to a gauge
having a maximum gauge rating not exceeding twice the applied test pressure.
(Ord. No. 2011.33, 9-22-11)
Sec. P2503 INSPECTION AND TESTS.
Section P2503.9 is hereby amended as follows:
Section P2503.9. Test gauges. Gauges used for testing shall be as follows:
1.
Tests requiring a pressure of 10 psi or less shall utilize a testing
gauge having increments of 0.10 psi or less.
2. Tests requiring a pressure of 10 psi but
less than or equal to 100 psi shall utilize a testing gauge having increments
of 1 psi or less.
3.
Tests requiring a
pressure of greater than 100 psi shall utilize a testing gauge having
increments of 2 psi or less.
Pressure tests required by this code, which are
performed utilizing dial gauges, shall be limited to a gauge having a maximum
gauge rating not exceeding twice the applied test pressure.
(Ord. No. 2011.33, 9-22-11)
Sec. P2603 STRUCTURAL AND PIPING PROTECTION.
Section P2603.6.1 is hereby amended as follows:
Section P2603.6.1. Sewer depth. Building sewers shall be a minimum of 12 inches (305
mm) below grade.
(Ord. No. 2011.33, 9-22-11)
Sec. P2801 GENERAL.
Section P2801.5.1 is hereby amended as follows:
Section P2801.5.1. Pan size and drain. The pan shall not be less than 1½ inches (38 mm) deep
and shall be of sufficient size and shape to receive all dripping or condensate
from the tank or water heater. The pan shall be drained by an indirect waste
pipe having a minimum diameter of ¾ inch (19 mm) installed with a uniform
alignment at a uniform slope in the direction of discharge of not less than
one-eighth unit vertical in 12 units’ horizontal (one-percent slope). Piping
for safety pan drains shall be of those materials listed in Table P2905.5.
(Ord. No. 2011.33, 9-22-11)
Sec. P2803 RELIF VALVES.
Section P2803.6.1 is hereby amended as follows:
Section P2803.6.1.
Requirements of discharge pipe. The
discharge piping serving a pressure-relief valve, temperature-relief valve or
combination valve shall:
1.
Not be directly
connected to the drainage system.
2.
Discharge in a
downward direction.
3.
Not be smaller
than the diameter of the outlet of the valve served and shall discharge full
size to the air gap.
4.
Serve a single
relief device and shall not connect to piping serving any other relief device
or equipment.
5.
Discharge through
an air gap to the floor, to the pan serving the water heater or storage tank,
to a waste receptor or to the outdoors.
6.
Discharge in a
manner that does not cause personal injury or structural damage.
7.
Discharge to a
termination point that is readily observable by the building occupants.
8.
Not be trapped.
9.
Be installed to
flow by gravity.
10. Terminate not less than 6 inches (152 mm) and not more
than 12 inches (610 mm) above finished grade, the floor or waste receptor.
11. Not have a threaded connection at the end of the
piping.
12. Not have valves or tee fittings.
13. Be constructed of those materials listed in Section
P2904.5 or materials tested, rated and approved for such use in accordance with
ASME A112.4.1.
(Ord. No. 2011.33, 9-22-11)
Sec. P2903 WATER-SUPPLY SYSTEM.
Section P2903.7 is hereby amended as follows:
P2903.7 Size of water-service mains, branch mains and
risers. The minimum size water
service pipe shall be 3/4 inch (19 mm). The size of water service mains, branch
mains and risers shall be determined according to water supply demand [gpm
(L/m)], available water pressure [psi (kPa)] and friction loss caused by the
water meter and developed length of pipe [feet (m)], including equivalent
length of fittings. The size of each water distribution system shall be
determined according to the methods in Appendix P or when approved by the code
official, to design methods conforming to acceptable engineering practice.
(Ord. No. 2011.33, 9-22-11)
Sec. P2904 DWELLING UNIT FIRE SPRINKLER SYSTEMS.
Section P2904 is hereby deleted.
(Ord. No. 2011.33, 9-22-11)
Sec. P3001 GENERAL.
Section P3001.4 is hereby amended as follows:
Section P3001.4. Sewer required. Every building in which plumbing fixtures are
installed and all premises having drainage piping shall be connected to a
public sewer, where available, or an approved private disposal system in
accordance with the Maricopa County Health Department Environmental Service
Division. The public sewer may be considered as not being available only when
so determined by the Maricopa County Health Department Environmental Service
Division.
(Ord. No. 2011.33, 9-22-11)
Sec. E3603
SERVICE, FEEDER AND GROUNDING ELECTRODE CONDUCTOR SIZING.
Table E3603.1 is hereby amended as follows:
Table E3603.1
SERVICE CONDUCTORS AND GROUNDING
ELECTRODE CONDUCTOR SIZING
|
Conductor
Types and Sizes for 120/240-Volt and 120/208-Volt, 3-Wire, Single-Phase
Dwelling Services and Feeders. Conductor Types RH, RHH, RHW, RHW-2, THHN,
THHW, THW, THW-2, THWN, THWN-2, XHHW, XHHW-2, SE, USE, USE-2 |
|||||
|
Copper (AWG or kcmil) |
Aluminum
or Copper-Clad Aluminum (AWG or kcmil) |
Service
or Feeder Rating (Amperes) |
Min.
Grounding Electrode Conductor sizea (AWG) |
||
|
|
≤ 30°C |
> 30°C |
Copper |
Aluminum |
|
|
4 |
2 |
100 |
---- |
8b |
6c |
|
3 |
1 |
110 |
---- |
8b |
6c |
|
2 |
1/0 |
125 |
100 |
8b |
6c |
|
1 |
2/0 |
150 |
125 |
6c |
4 |
|
1/0 |
3/0 |
175 |
150 |
6c |
4 |
|
2/0 |
4/0 |
200 |
175 |
4 |
2 |
|
3/0 |
250 |
225 |
200 |
4 |
2 |
|
4/0 |
300 |
250 |
225 |
2d |
1/0d |
|
250 |
350 |
300 |
250 |
2d |
1/0d |
|
350 |
500 |
350 |
300 |
2d |
1/0d |
|
400 |
600 |
400 |
350 |
1/0d |
3/0d |
a. Where protected by a metal raceway, grounding electrode
conductors shall be electrically bonded to the metal raceway at both ends.
b. No. 8 AWG grounding electrode conductors shall be protected with
metal conduit or nonmetallic conduit.
c. Where not protected, No. 6 AWG grounding
electrode conductors shall closely follow a structural surface for physical
protection. The supports shall be spaced not more than 24 inches on center and
shall be within 12 inches of any enclosure or termination.
d. Where the sole grounding electrode system
is the footing steel as covered in Section E3608.1.2, the grounding electrode
conductor shall not be required to be larger than No. 4 copper conductor.
CAUTION - UTILITY COMPANY
CONDUCTOR SIZE REQUIREMENTS MAY VARY. CONSULT WITH SERVING UTILITY PRIOR TO
INSTALLATION.
(Ord. No.
2011.33, 9-22-11)
Sec. E3701 GENERAL.
Section E3701.1 is hereby amended as follows:
Section E3701.1. Scope. This chapter covers branch circuits and feeders and
specifies the minimum required branch circuits, the allowable loads and the
required overcurrent protection for branch circuits and feeders that serve less
than 100 percent of the dwelling unit load. Feeder circuits that serve 100
percent of the dwelling load shall be sized in accordance with the procedures
in Chapter 36. Aluminum conductors
smaller than #8 shall not be used for lighting or power circuits indoors.
(Ord. No. 2011.33, 9-22-11)
Sec. E3908 GROUNDING.
Section E3908 is hereby amended as follows:
Section E3908.8. Types of
Equipment Grounding Conductors. The equipment grounding conductor run with or
enclosing the circuit conductors shall be one or more or a combination of the
following:
1.
A copper or other
corrosion-resistant conductor. This conductor shall be solid or stranded;
insulated, covered, or bare; and in the form of a wire or a busbar of any
shape.
2.
Threaded rigid metal conduit and fittings.
3.
Threaded
Intermediate metal conduit and fittings.
4.
Electrical
metallic tubing with an individual equipment grounding conductor.
5.
Flexible metal
conduit with an individual equipment grounding conductor or where both the
conduit and fittings are listed for grounding.
6.
Armor of Type AC
cable with an individual equipment grounding conductor.
7.
Surface metal
raceway.
8.
Metal-clad cable
with an individual equipment grounding conductor or, where both the cable and
fittings are listed for grounding.
9. Liquid-tight flexible metal conduit with an
individual equipment grounding conductor or where both the conduit and fittings
are listed for grounding.
(Ord. No. 2011.33, 9-22-11)
CHAPTER 42 SWIMMING POOLS
Section E4201.2 is hereby amended as follows:
E4201.2 Definitions.
PERMANENTLY
INSTALLED SWIMMING, WADING, IMMERSION AND THERAPEUTIC POOLS. Those that are constructed in the ground or
partially in the ground, and all others capable of holding water with a depth
greater than 18 inches (430 mm), and all pools installed inside of a building,
regardless of water depth, whether or not served by electrical circuits of any
nature.
Sec. E4203 EQUIPMENT LOCATION AND CLEARANCES.
Section E4203.8 is hereby amended as follows:
E4203.8 Mechanical and electrical equipment location. Mechanical and electrical equipment not addressed in
other sections in Chapter 42, shall not be permitted within the area extending
6 feet (1.83 m) horizontally from the inside wall of the pool.
Exception: Listed swimming pool covers where the electrical
equipment is part of the total assembly.
(FPN): In determining the above dimension, the distance
to be measured is the shortest path to the equipment without piercing a floor,
wall, ceiling, doorway with hinged or sliding door, window opening, or other
similar effective permanent barrier.
(Ord. No. 2011.33, 9-22-11)
Sec. E4302 POWER SOURCES
Section E4302.3 is hereby amended as follows:
E4302.3 Bell and signal transformers. In dwelling units, bell and signal transformers
shall not be installed in attics, closets or in any inaccessible concealed
place.
(Ord. No. 2011.33, 9-22-11)
Sec. AG101 GENERAL
Appendix Section AG101.2 is hereby amended as
follows:
AG101.2 Pools in flood hazard areas. Pools that are located in flood hazard areas
established by Table R301.2(1), including above-ground pools, on-ground pools
and in-ground pools that involve placement of fill, shall comply with Tempe
City Code, Chapter 12.
Appendix Section AG101.2.1 is hereby amended as
follows:
AG101.2.1 Pools located in designated storm water
retention areas. Where pools are
located in design storm water retention areas, the construction of the pool
shall comply with Tempe City Code, Chapter 12.
Appendix Section AG102 is hereby amended as
follows:
SWIMMING
POOL. Any structure intended for swimming or
recreational bathing that contains water over 18 inches (430 mm) deep. This
includes in-ground, aboveground, and on-ground swimming pools, hot tubs, and
spas.
Appendix Section AG105.2 is hereby amended as
follows:
Section AG105.2.
Outdoor swimming pool.
9.1 The pool shall be equipped with a powered safety cover
in compliance with ASTM F 1346; or
9.2 Doors with direct access to the pool through that wall
shall be equipped with an alarm which produces an audible warning when the door
and/or its screen, if present, are opened. The alarm shall be listed and
labeled in accordance with UL 2017. The audible alarm shall activate within 7
seconds and sound continuously for a minimum of 30 seconds after the door
and/or its screen, if present, are opened and be capable of being heard throughout
the house during normal household activities. The alarm shall automatically
reset under all conditions. The alarm system shall be equipped with a manual
means, such as touch pad or switch, to temporarily deactivate the alarm for a
single opening. Deactivation shall last for not more than 15 seconds. The
deactivation switch(es) shall be located at least 54 inches (1372 mm) above the
threshold of the door; or
9.3 Other means of protection, such as self-closing doors
with self-latching devices, which are approved by the governing body, shall be
acceptable as long as the degree of protection afforded is not less than the
protection afforded by Item 9.1 or 9.2 described above.
10.1
N/C
10.2
N/C
Appendix Section AG105.5 is hereby amended as
follows:
Section AG105.5. Barrier exceptions:
1. Spas or hot tubs with a safety cover which
complies with ASTM F 1346, as listed in Section AG107, shall be exempt from the
provisions of this appendix.
2. Where the premises upon which a swimming
pool, spa, or hot tub is located adjoins that body of water recorded as Tract S
of The Lakes, an enclosure parallel to the bank is not required; provided, that
an abutting enclosure, conforming to AG105, extends horizontally to the
lakeside edge of the lake bank or beyond.
For purposes of this exception, the word abutting shall mean terminating
at the point of contact with the lakeside edge of the bank.
Appendix Section AG105.6 is hereby added as
follows:
Section
AG105.6 Unenclosed pools. It is hereby declared to be a public
nuisance and dangerous to the public health, safety, and welfare to maintain an
outdoor swimming pool, spa or hot tub in the city unless enclosed in accordance
with AG105, It shall be the responsibility of both the property owner and the
occupant of the premises to install and maintain the fences, locks, latches,
alarms, and gates in good condition and proper working order when water is in
the pool, and either or both may be deemed in violation of this chapter for
failure to do so.
Appendix Section AG105.7 is hereby added as
follows:
Section
AG105.7. Prerequisites to issuance of building permit. A building
permit shall not be issued for any swimming pool, spa or hot tub unless the
plans for such pool provide for an enclosure as required by this article.
Appendix Section AG105.8 is hereby added as
follows:
Section
AG105.8. Final inspection and approval. No swimming
pool, spa or hot tub shall be filled in whole or in part with water unless the
pool enclosure has been installed in accordance with this article and approved
by the Community Development Director or authorized representative.
(Ord. No. 2011.33, 9-22-11)
Sec. Appendix, K102
AIR-BORNE SOUND
Appendix Section AK102.1 is hereby amended as
follows:
Section AK102.1 General. Airborne sound insulation for walls and
floor-ceiling assemblies separating dwelling units from each other shall meet a
Sound Transmission Class (STC) rating of no less than 50 (45 if field tested)
when tested in accordance with ASTM E 90. Penetrations or openings in
construction assemblies for piping; electrical devices; recessed cabinets;
bathtubs; soffits; or heating, ventilation or exhaust ducts shall be sealed,
lined, insulated or otherwise treated to maintain the required rating. Dwelling
unit entrance doors, which share a common space, shall be tight fitting to the
frame and sill.
Appendix Section AK103.1 is hereby amended as
follows:
Section AK103.1.
General.
Floor/ceiling assemblies between dwelling units or between a dwelling unit and
a public or service area within a structure shall have an Impact Insulation
Class (IIC) of no less than 50 (45 if field tested) when tested in accordance
with ASTM E 492.
(Ord. No. 2011.33, 9-22-11)