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That certain code entitled the International Residential Code (IRC) for One- and Two-Family Dwellings, 2018 Edition along with Appendices D, Recommended procedure for safety inspection of an existing appliance installation; E, Manufactured housing used as dwellings; H, Patio covers; K, Sound transmission; M, Home Day care; N, Venting methods; O, Automatic vehicular gates; P, Size of water piping system; and Q, Tiny Houses are hereby adopted as the Residential Code for One- and Two-Family Dwellings of the Town of Clarkdale and made a part of this chapter the same as though said code was specifically set forth herein, with the following changes:

A. Section R101.1. Insert: “Clarkdale, Arizona” in place of name of jurisdiction.

B. Section R102.7, Existing Structures. After International Property Maintenance Code, add the following: “2018 edition, as adopted and amended by the Town of Clarkdale.” After International Fire Code, add “2018 as adopted and amended by the Verde Valley Fire District.”

C. Section R103, Department of Building Safety. Omit in its entirety.

D. Section R105.2, Work Exempt from Permit. Building: 1. Omit entire sentence and substitute the following: Accessory structures 50 sq. ft. or more require a building permit. Accessory structures less than 50 sq. ft. do not require a building permit, but the location of the structure shall be approved by the Community Development Department prior to construction. 2. Omit entire sentence and substitute the following: All fences require building permits. 7. Omit the entire sentence and substitute the following: Pre-fabricated swimming pools that are 18" (457mm) deep. (In lieu of 24" (610mm) deep).

E. Section R105.7, Placement of Permit. Add the following after the last sentence:

The Building Official shall establish a policy for the display of address numbers, permit and plan storage and determine the necessary documents to be at the job site.

F. Section R106.3.3, Phased Approval. Omit the last sentence in its entirety. The holder of such permit for the foundation or other parts of a building or structure shall proceed at the holder’s own risk with the building operation and without assurance that a permit for the entire structure will be granted.

G. Section R108.6, Work Commencing before Permit Issuance. Insert up to double or two times the amount of the permit fee, a maximum of $200.00 per fee schedule.

H. Section R202, Definitions. Add the following:

Guest houses shall be considered in their entirety as R-3 for review and fee assignment purposes.

I. Table R301.2(1). Insert the following information into Table R301.2(1):

Ground snow load:

20

Wind design

Speed:90mph

Topographic effects:

None

Seismic Design

A

Subject to damage from:

Weathering: moderate

Frost line depth: 12 inches

Termite: moderate/ heavy

Winter design temp

20 degrees

Ice barrier underlayment required:

No

Flood Hazards:

Determined by Yavapai County

Air freezing index:

Not applicable

Mean annual temperature:

Not applicable

J. Section R302.3, Two Family Dwellings.

Dwelling units in two-family dwellings shall be separated from each other by wall and/or floor assemblies having not less than a 1-hour fire-resistance rating when tested in accordance with ASTM E 119 or UL 263. Fire resistance-rated floor/ ceiling and wall assemblies shall extend to and be tight from the foundation to the underside of the roof sheathing Exceptions: omit items 1: A fire resistance rating of ½ hour shall be permitted in buildings equipped throughout with an automatic sprinkler system installed in accordance with NFPA 13 and 2 Wall assemblies need not extend through attic spaces when the ceiling is protected by not less than 5/8” (15.9mm) Type X gypsum board and an attic draft stop constructed as specified in Section R302.12.1 is provided above and along the wall assembly separating the dwellings. The structural framing supporting the ceiling shall also be protected by not less than ½” (12.7mm) gypsum board or equivalent.

K. Section R313, Automatic Fire Sprinkler Systems. Omit in its entirety.

L. Section R315.3, Where Required in Existing Buildings (CO-2 Alarms). Delete in its entirety.

M. Section R402.1, Wood Foundations. Omit in its entirety and substitute the following:

Wood foundations are not permitted. All references to constructing wood foundations in this code shall be considered void.

N. Section R404.1.8, Rubble Stone Masonry. Omit in its entirety.

O. Section R903.4, Roof Drainage.

Roof water shall be collected by a system of gutters and piping and channeled to the yard for immediate use or to an approved storage tank(s) for future use. Discharged water shall not cause erosion or become a private or public nuisance.

P. Table N1102.1, Insulation and Fenestration Requirements by Component. In the Climate Zone 3 section, in the ceiling R-value column, omit 30 and substitute the following: 38. In the wood frame wall R-value column, omit 13, and substitute the following: 19.

Q. Table N11102.1.2, Equivalent U-Factors. In the Climate Zone 3 section, Ceiling U-Factor column, omit 0.035 and substitute the following: 0.030. In the Frame Wall U-Factor column, omit 0.082 and substitute 0.060.

R. Section M1413.1, General. Omit in its entirety and substitute the following:

Evaporative coolers shall not be installed in new buildings or additions. Evaporative coolers shall be permitted only as a replacement for coolers in existence prior to the adoption of this Code. The replacement unit must have a manufacturer approved water recirculating device.

S. Section G2448.1.1, Installation Requirements. Add the following after the last sentence:

Free standing tank type water heaters shall maintain a minimum 2-inch clearance from any surrounding door or wall.

T. Section P2712.10, Composting Toilets.

Approved composting toilets are permitted.

Add:

Manufacturers installation manual must be on site during rough inspection.

U. Section P2801.1, Required. Add the following:

All water heating systems shall be equipped with a recirculating pump, manifold, or similar approved device, unless the farthest fixture using hot water is 10 ft. or less from the water heater. All hot water piping, except for fixture supply lines, shall be insulated with approved materials.

V. Section P2902.5.3, Allowed Irrigation Systems. Irrigation systems shall be regulated by section 608.16.5 in the 2018 International Plumbing Code.

W. Section P2902.5.4, Connections to Automatic Fire Sprinkler Systems. Omit exception in its entirety.

X. Section P2903.3, Minimum Pressure. Omit in its entirety and substitute the following:

A water pressure reducing device shall be required as described in Section 604.8 of the 2018 International Plumbing Code. Minimum pressure shall be 55 pounds per square inch (psi) unless otherwise required. Maximum psi shall be 65.

Y. Section P2903.3.1, Maximum Pressure. Omit in its entirety.

Z. Section P2903.7, Size of Water Service Mains, Branch Mains and Risers. Omit “3/4 inch (19 mm)” and substitute the following: 1 inch, or as approved by the Utilities Director or the Building Official.

AA. Section AG103, Other Requirements. Swimming pools, spas, and hot tubs shall also comply with all State of Arizona laws governing these structures. Both State and Town of Clarkdale adopted building codes shall be in full force regardless of the age of the occupants of the dwelling served by the pool, spa or hot tub.

BB. Section AG109, Pool and Spa Covers. Add the following:

AG109.1 Required covers. All outdoor swimming pools and spas, permanent or portable, shall be equipped with tight fitting covers to reduce evaporation.

CC. Airborne Sound Transmission – Section AK102.1, General. Omit 45, substitute the following: 60

DD. Structural-Borne Sound Transmission – Section AK103.1, General. Omit 45, substitute the following: 60.

EE. Section AP101. Omit in its entirety and substitute the following:

1. All one and two family dwellings and townhouses built shall be provided with automatic fire sprinkler protection as referenced in 13D-02 of the National Fire Protection Association, 2018 International Building Code. The following exceptions shall apply:

a. All spaces including attached garages, containing an electrical outlet or light fixture shall be protected with fire sprinklers.

b. Where there is a mixed use containing a residential use group, the entire building will be sprinkled.

FF. Section AP102, Sprinklers Not Required.

The following areas do not require sprinklers:

1. Detached accessory structures that do not contain occasional or full time residential uses, including guest houses and in-law arrangements, located 6 feet or more from the house.

2. Attached carports, open on two (2) or more sides.

3. Covered patios, open on one (1) or more sides.

4. Uninhabitable attics, basements, and crawl spaces.

GG. Section AP103, Existing Buildings.

Existing buildings shall be exempt from sprinkler requirements unless:

1. One or more additions are made and the aggregate area of the addition exceeds 50% of the square footage of the original building on October 11, 2005, or 1000 square feet, whichever is less.

2. An existing detached building is converted in whole or part to residential use or an addition to a detached structure is built that contains a residential use.

3. An addition is added that exceeds the available water supply needed for fire flow.

HH. Section AR101, Dust Control.

Any terrain that has been grubbed or altered by grading or construction shall have dust control measures in place at all times, including weekends, to prevent any windborne dust from becoming a public or private nuisance. Contractors and owners shall be held responsible for controlling dust. Exception: Land where regrowth of vegetation has occurred.

II. Section AR102, Stop Work Order.

A written notice requiring cessation of dust producing activity shall be issued to the operator, contractor, or owner if excessive dust is being generated and the method of controlling the dust is inadequate or absent. If after 15 minutes, the dust generation is not corrected; a written stop work order may be issued to the operator and/or contractor for all or part of the project, and shall remain in effect until adequate measures have been taken to reduce the dust to an acceptable level.

[Resolution #1615, 2019; Ordinance #401, 2019; Resolution #1457, 2014; Ordinance #357, 2014; prior code § 7-2-1.]