(A) Adoption. There is hereby adopted by reference, that certain document known as the International Residential One- and Two-Family Dwelling Code, 2018 Edition, including Appendixes A, B, C, D, F, G, H, J, K, M, N, O, P, Q, R, and S as published by the International Code Council. Said document is hereby amended and adopted as the Building Code for One- and Two- Family Dwellings for the areas of Dewey- Humboldt providing for the regulation of the erection, construction, enlargement, alteration, repair, moving, demolition, conversion, occupancy, use heightened area of all building and structures within the town and each and all such regulations, provisions, penalties, conditions and terms of the International Residential One- and Two-Family Dwelling Code, 2018 Edition, including Appendixes A, B, C, D, F, G, H, J, K, M, N, O, P, Q, R, and S are hereby referred to, adopted, and made a part hereof as set forth herein, excepting such portions as are hereinafter deleted, modified or amended.
(B) (1) Amendments.
CHAPTER 1 ADMINISTRATION
SECTION R101 —GENERAL
SECTION R101.1 — Title is amended by the insertion of "Dewey-Humboldt."
SECTIONS R101.2 through R114 are amended by deletion in their entirety and replaced with the requirements of the Dewey-Humboldt Administrative Building Code as adopted and as may be amended from time to time.
CHAPTER 2 DEFINITIONS
SECTION R201 — GENERAL
SECTION 201.3 Terms defined in other codes are hereby amended as follows: Where terms are not defined in this code, such terms shall have the meanings ascribed in other code publications of the International Residential Code and the most recent Dewey-Humboldt Administrative Building Code. In the event there is a conflict between the aforementioned codes, the Dewey-Humboldt Administrative Building Code is superior.
SECTION R201.4 Terms not defined is hereby deleted in its entirety and revised to read as follows:
201.4 — Terms not defined. Where terms are not defined through the methods authorized by this chapter, 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.
SECTION R202 — DEFINITIONS
DEFINITIONS — The following words and or terms are hereby revised to read as follows:
TOWNHOUSE. A single-family dwelling unit constructed in a group of three or more attached units in which each unit extends from the foundation to roof and with a yard or public way (open space) on at least two sides. Such are not more than three stories above grade plane in height with a separate means of egress to each unit.
CHAPTER 3 BUILDING PLANNING
SECTION R301 — DESIGN CRITERIA
TABLE R301.2 (1) is hereby established as shown:
TABLE R301.2 (1) CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
Roof Snow Load | Wind Speedd (mph) | Topographic effectsk | Seismic Design Categoryf | SUBJECT TO DAMAGE FROM | Winter Design Tempe 15 DEGREES | Ice Barrier Underlayment Requiredh NO | ||
Weatheringa | Frost Line Depthb | Termite | ||||||
30 | 115 mph
i
Exposure C | NO | C | Negligible Below 3500 elevation Moderate Above 3500 elevation | 18" | Moderate to Heavy | 20° | |
bFrost line depth is measured from finished grade to the bottom of the required concrete foundation/footing to be the required thickness as from Section R403.1.1
Flood Hazardsg | Air Freezing Index | Mean Annual Tempj |
Refer to Flood Plain Unit | 124 | 53 degrees
|
IECC Climatic Zones | |
Zone 4 | Above 3500 elevation |
SECTION R308 — GLAZING
SECTION R308.4.5 — Glazing and wet surfaces is hereby deleted in its entirety and revised to read as follows:
R308.4.5 — Glazing and wet surfaces.
All interior and exterior glazing in bathrooms, the bottom edge of which is less than 56 inches above the floor level shall be provided with
safety glazing as per A.R.S. § 36-1631. This shall apply to single glazing and all panes in multiple glazing.
Exception: Glazing that is more than 60 inches (1524mm), measured horizontally and in a straight line, from the water's edge of a bathtub, hot tub, spa, whirlpool or swimming pool or from the edge of a shower, sauna or steam room.
SECTION 309 Garages and Carports
SECTION R309.2 — Scope is hereby amended by insertion of new exceptions to read as follows:
Exception: Gravel surfaces shall be permitted at ground level in detached carport with a minimum of ten feet away from any structure.
SECTION R313 — AUTOMATIC FIRE SPRINKLER SYSTEMS
Sections R313.1 through R313.2.1 are hereby deleted in their entirety and replaced with new section R313.1 Scope, to read as follows:
Section R313.1 — Scope. Fire protection systems shall be install , repaired, operated, maintained and enforced in accordance with the requirements of the Central Arizona Fire and Medical Authority and the International Fire Code (as adopted and amended by Central Arizona Fire and Medical Authority), collectively, "Central Arizona Fire and Medical Authority requirements" The Building Official shall assist the Central Arizona Fire and Medical Authority in the inspection, testing and oversight of fire protection systems as may be required from time to time. The Building Official shall withhold approval where fire protection systems are not in compliance with Central Arizona Fire and Medical Authority requirements.
SECTION R322 — Flood-resistant construction is hereby deleted in its entirety. All references as may be noted within this code as adopted by Dewey- Humboldt that pertain to flooding - flood-resistant construction - flood hazard areas shall be controlled and regulated by the adopted provisions of the Yavapai County Flood Control District.
CHAPTER 4 FOUNDATIONS
SECTION R401 — GENERAL
SECTION R401.4 — Soils tests is hereby amended to read as follows:
R401.4 — Soils tests. Areas within Dewey- Humboldt are likely to have expansive, compressible shifting or other unknown soil conditions. The Building Official may require a soil test to determine the soil's characteristics at a particular location.
SECTION R403 — FOOTINGS
SECTION R403.1 — Continuous spread concrete footings shall be reinforced with least one #4 horizontal reinforcement bar located three inches from the bottom of the footing. Monolithic interior and exterior concrete footings shall be reinforced with at least one #4 horizontal reinforcement bar located three inches from the bottom of the footing and one #4 horizontal reinforcement bar located three inches from the top of the slab. Pier and column footings shall be reinforced with #4 horizontal reinforcement bars spaced no more than 12 inches in each direction and located three inches from the bottom of the footing.
SECTION R403.1.2 — FOUNDATION with stem walls. Foundation with stem walls shall be provided with the following steel reinforcement, unless an engineered design is provided by a licensed Arizona Design Professional.
1. For non-retaining stem walls less than 24 inches in height, a bond beam composed of one horizontal #4 rebar is required at the top of the wall and one #4 vertical rebar is provide at 48 inches on center. The vertical reinforcement shall extent into the footing with a bent hook having a minimum of six-inches.
2. For stem walls 24 inches to 48 inches in height a bond beam composed of two horizontal #4, or one #5 rebar is required at the top of the wall and one #4 vertical rebar is provided at 48 inches on center. The vertical reinforcement shall extent into the footing with a bent hook having a minimum of six-inches.
3. For stem walls over 48 inches in height or retaining two or more feet of earth, engineering may be required to determine footing size, wall thickness, materials, steel placement and size (depending on soil conditions) height, surcharge loading, or other requirements at the option of the Building Official (or his designee).
4. All exterior footings shall be place a minimum of 18 inches into undisturbed or compacted soil approved by the building official.
The exception at the end of this section is hereby deleted and amended to read as follows:
Note: The code location for a standard hook as shown in the 3rd paragraph shall be added to read as follows: "Standard hook in compliance with Section R608.5.4.5 and Figure R608.5.4(3)". Interior brace wall panels shall require a minimum eight inch thickened slab and be reinforced with one #4 bar.
SECTION R404 — FOUNDATION AND RETAINING WALLS
SECTION R404.1.1.1 — Masonry foundation walls is hereby amended by deletion in its entirety and revised to read as follows:
R404.1.1.1 — Masonry foundation walls. Concrete masonry foundation walls and clay masonry foundation walls shall be constructed as set forth in Tables R404.1.1(2), R404.1.1(3) and R404.1.1(4) for the most restrictive design soil class unless a soils classification has been provided by an approved agency using an approved method and shall also comply with the provisions of this section and the applicable provisions of Sections R606, R607 and R608. In Seismic Design Category C, D0, D1 and D2, concrete masonry foundation walls shall comply with Section R404.1.4.1. Rubble stone masonry walls shall not be used in Seismic Design Category C, D0, D1 or D2 .
SECTION R404.1.2.2 — Reinforcement for foundation walls is hereby amended with the insertion of "C" where "Seismic Design Categories D0, D1, and D2" appears to read as "Seismic Design Categories C, D0, D1, and D2".
SECTION R404.1.4.1 — Masonry foundation walls is hereby amended with the insertion of "C" where "Seismic Design Categories D0, D1, and D2" appears to read as "Seismic Design Categories C, D0, D1, and D2".
SECTION R404.1.4.2 — Concrete foundation walls is hereby amended with the insertion of "C" where "Seismic Design Categories D0, D1 , and D2 " appears to read as "Seismic Design Categories C, D0, D1, and D2".
SECTION R404.1.8 — Rubble stone masonry is hereby deleted in its entirety.
CHAPTER 5 FLOORS
SECTION R506 — CONCRETE FLOORS (ON GROUND)
SECTION R 506.2.3 Vapor retarder is hereby deleted in its entirety.
SECTION R507 — EXTERIOR DECKS
SECTION R507.3.2 Minimum Depth is hereby amended by the deletion of Exemptions 1 and 2.
CHAPTER 9 ROOF ASSEMBLIES
SECTION R905 — REQUIREMENTS FOR ROOF COVERINGS
SECTION R905.3.1 — Is hereby deleted and revised to read as follows: Deck Requirements. Concrete and clay tile shall be installed over solid sheathing.
SECTION R905.4.1 — Is hereby deleted and revised to read as follows: Deck Requirements. Metal Roof Shingles shall be installed over solid sheathing.
SECTION R905.7.1 — Is hereby deleted and revised to read as follows: Deck Requirements. Wood Shingles shall be installed over solid sheathing.
SECTION R905.8.1 — Is hereby deleted and revised to read as follows: Deck Requirements. Wood Shake shall be installed over solid sheathing.
SECTION R905.10.1 — Is hereby deleted and revised to read as follows: Deck Requirements. Metal roof panels shall be installed over solid sheathing.
CHAPTER 10 CHIMNEYS AND FIREPLACES
SECTION 1001.1 — Masonry fireplaces: as per Chapter 10
CHAPTER 11 ENERGY EFFICIENCY
CHAPTER 11 — ENERGY EFFICIENCY is hereby deleted in its entirety and all regulations relating to energy efficiency shall be included within the International Energy Conservation Code" as adopted by the Town of Dewey- Humboldt, and as may be amended from time to time.
CHAPTER 12 MECHANICAL ADMINISTRATION
CHAPTER 12 Mechanical Administration is deleted in its entirety. NOTE: The Dewey- Humboldt Administrative Building Code, provisions as adopted by Dewey-Humboldt shall be used as the administrative provisions for Chapters 12 through 24 of this code.
CHAPTER 24 FUEL GAS
SECTION G2403 202 — GENERAL DEFINITIONS is hereby amended by revision of the following term:
CODE OFFICIAL. Is the BUILDING OFFICIAL as defined in Section 102.13 of the "Dewey-Humboldt Administrative Building Code".
SECTION G2404.7 (301.11) — Flood Hazard is hereby deleted in its entirety. Enforcement and regulations of flood hazard areas within Dewey-
Humboldt shall be controlled by Yavapai County Flood Control District.
SECTION G2406 (303) — APPLIANCE LOCATION
SECTION G2406.2 (303.2) — Prohibited locations is hereby amended by addition of 2nd sentence to read as follows:
SECTION G2406.2 — Hazardous locations. Liquefied petroleum gas piping shall not serve any gas-fired appliance or equipment in a pit or basement where heavier-than-air gas may collect to form flammable mixture.
SECTION G2415 (404) — PIPING SYSTEMS INSTALLATION
Section G2415.12 — Minimum Burial Depth = shall be installed a minimum depth of 12 inches below grade
SECTION G2415.17 (404.17) — Plastic pipe. See below
SECTION G2415.17.1 (404.17.1) Limitations is hereby amended to revise the first paragraph to read as follows:
SECTION G2415.17.1 (404.17.1) — Limitations. Plastic pipe shall be installed outdoors underground only. The minimum burial depth for plastic pipe shall be 18 inches (457 mm) below finished grade. Plastic pipe shall not be used within or under any building or slab or be operated at pressure greater than 100 psig (689 kPa) for natural gas or 30 psig (207 kPa) for LP-gas.
SECTION G2420 (409) — GAS SHUTOFF VALVES
SECTION G2420.2 (409.2) — Meter valve is hereby amended by addition to the following section to read as follows:
G2420.2 (409.2) — Meter valve. Every meter shall be equipped with a shutoff valve located on the supply side of the meter. Such shutoff shall be manually operated and placed on the supply piping located outside the building it supplies and shall be readily accessible at all times.
SECTION G2420.3 (409.3.2) — Individual buildings is amended to read as follows:
G2420.3 (409.3.2) — Individual buildings. All buildings shall be provided with a shutoff valve located on the downstream side of the gas meter, between the gas meter and the building. Multiple buildings on the same system shall have a separate shutoff valve for each building.
CHAPTER 26 GENERAL PLUMBING REQUIREMENTS
SECTION P2601.2 (701.2) — Connections to drainage system. Is hereby amended by insertion of additional exception to read as follows:
Exception: Manufactured composting toilets included on the Arizona Department of Environmental Quality Listing of Proprietary Products (latest version) used to receive liquid wastes or sewage are not required to be connected to the sanitary drainage system but are required to be a component in an onsite wastewater system.
SECTION P2603 — STRUCTURAL AND PIPING PROTECTION
SECTION P2603.5 — Freezing is amended by the revision of the last sentence to read as follows:
P2603.5 — Freezing. Water service pipe shall be installed not less than 18 inches deep below finished grade and with a blue 18 AWG insulated tracer wire terminating above grade at each end.
SECTION P2603.5.1 — Sewer depth is hereby amended to read as follows:
P2603.5.1 — Sewer depth. Building sewers that connect to private sewage disposal systems shall be a minimum of 12 inches below finished grade. Building sewers shall be a minimum of 12 inches below grade with a green 18 AWG insulated tracer wire terminating above grade at each end. Leach lines shall have a green insulated 18 AWG tracer wire with the piping.
CHAPTER 28 WATER HEATERS
SECTION P2801 — GENERAL
SECTION P2801.1 — Required is hereby amended by the addition of a second paragraph to read as follows:
P2801.1 — Required. All new residences with two or more bathrooms, or 1500 sq. ft. shall have a hot water re—circulating system installed.
SECTION P2804 — RELIEF VALVES
SECTION P2804.6.1 (504.6) — Requirements for discharge pipe, Item #5 is amended to read as follows:
P2804.6.1 — Requirements for discharge pipe.
5. Discharge to the floor, to an indirect waste receptor or to the outdoors. Where discharging to the outdoors, discharge piping shall be no less than six inches and no greater than 24 inches from finished outside grade.
CHAPTER 39—40 DEVICES AND LUMINAIRES
SECTION E4002— RECEPTACLES
SECTION E4002.14 — Tamper-resistant Receptacles is hereby deleted in its entirety.
SECTION E.3902.16 ARC-fault circuit-interrupter protection is hereby deleted excepted for bedrooms and sleeping area.
(2) Findings and declaration. The Town Council of Dewey-Humboldt of Yavapai County, Arizona specifically and expressly finds and declares that the nature and uniqueness of the climate, terrain, and location does necessitate and demand specific amendments to the International Residential One-and Two- Family Dwelling Code, 2018 Edition, which are stated in this ordinance.
(Ord. 21-159, passed 4-20-2021)