9-1-4: ADOPTION OF CODES BY REFERENCE:
The most recent version adopted by the State of Utah of the following codes and the appendices and the State’s amendment are incorporated by reference and adopted as the Building Codes of Washington County: International Building Code including appendix J, International Mechanical Code, International Fuel Gas Code, International Residential Code including appendix J, International Fire Code including appendices A, B, C, and D as amended by the State of Utah, International Energy Conservation Code, International Plumbing Code, National Electrical Code, HUD Code, and the Model Manufactured Home Installation Standard. Three (3) copies of each of the codes shall be kept on file in the Office of the Washington County Clerk for use and examination by the public:
   A.   The cited sections of the International Residential Code are amended as follows:
   Table R301.2(1). Replace with attachment A, Frost Depth For Areas In Washington County
   ATTACHMENT A
Frost Depth For Areas In Washington County
Area
Frost Depth
(Inches)
Frost Depth For Areas In Washington County
Area
Frost Depth
(Inches)
Kolob
36
Cedar Mountain
36
Pine Valley
36
New Harmony/Harmony Heights
30
Blackridge/New Harmony Farms, Point & Ridge
30
Enterprise
30
Central/Dixie Deer Estates
30
Brookside/Pine Valley Mtn. Farms
30
Veyo
22
Dammeron Valley Farms, Ranches, Old Farms, Homesteads & Pinions Hills
22
Sprindale/Rockville
20
Hildale
20
Apple Valley Ranches, Gooseberry & Canaan Mtn. Estates
20
Pintura
20
Diamond Valley Acres, Topaz Est., Kathie’s Acres, Paradise Est. & Ridge I, II & I-A
18
Gunlock
18
Winchester Hills/JEL
16
Silver Reef Est./Silver Valley Est./Eldorado Hills/Bonanza Est./Casa De Ora & Homespun Village
12
Grassy Meadows Sky Ranch/Cliffdwellers/Hurricane Cliffs & Cliff View Est.
12
Compaction tests: 90 percent   Wind capacity: 70 miles per hour
Seismic zone: Site specific
 
Section P2603.6.1. Insert: 12 inches (304 mm)
   B.   The cited sections of the international plumbing code are amended as follows:
Section 305.6.1. Insert: 12 inches (304 mm)
Section 904.1. Insert: 12 inches (304 mm)
(Ord. 2015-1049-O, 4-21-2015)
   C.   International Urban-Wildland Interface Code, 2003 Edition:
      1.   The international urban-wildland interface code, 2003 edition, as currently amended by the division of forestry, fire and state lands under rule R652-122 of the Utah administrative code (the 2006 Utah wildland-urban interface code), is hereby adopted as the wildland-urban interface code of Washington County, for regulating and governing the mitigation of hazard to life and property from the intrusion of fire from wildland exposures, fire from adjacent structures and prevention of structure fires from spreading to wildland fuels as therein provided; providing for the issuance of permits and the collection of fees therefor; and each and all of the regulations, provisions, penalties, conditions and terms of said wildland-urban interface code on file in the office of the Washington County clerk are hereby referred to, adopted, and made a part hereof, as if fully set out in this chapter, with the additions, insertions and changes as set forth in rule R652-122 of the Utah administrative code and as set forth in subsection C2 of this section.
      2.   The following sections are hereby revised (stricken language is removed, underlined language is added):
Chapter 1
Section 101.1 Scope
Exceptions:
      1.   A structure that is no more than 1,000 square feet, with the required defensible space and without reasonable access to a municipal, or similar, water system.
      2.   A structure that originally did not exceed 1,000 square feet, when adding an addition of 25% or less to the total original square footage.
Chapter 2
Definitions
Approved. Acceptable to the building official, fire official, or authority having jurisdiction. Approval by the code official as the result of review, investigation or tests conducted by the code official or by reason of accepted principles or tests by national authorities, or technical or scientific organizations.
Chapter 4
Section 402.2 Individual Structures
402.2.1 Access. Individual structures hereafter constructed or relocated into or with-in the wildland urban interface areas shall be provided with approved fire apparatus access roads in accordance with the international fire code and driveways in accordance with section 403.2. ...
402.2.2 Water Supply
Exceptions:
2. Buildings containing only private garages, carports, sheds and agricultural buildings with a floor area of no more than 600 square feet. A structure that is no more than 1,000 square feet, with the required defensible space and without reasonable access to a municipal, or similar, water system.
3. A structure that originally did not exceed 1,000 square feet, when adding an addition of 25% or less to the total original square footage.
Section 403.2 Driveways
Exceptions:
1. New structures and additions to existing structures on existing approved driveways.
2. Approved driveways through easements less than the required driveway width.
Section 403.3 Fire Apparatus Access Roads. When required, fire apparatus access roads shall be all weather approved roads with...
   Exceptions:
1. Fire apparatus access roads on federal and state land.
2. Fire apparatus access roads through easements less than the required road width.
3. Existing fire apparatus access roads.
(Ord. 2015-1048-O, 4-7-2015; amd. Ord. 2019-1138-O, 6-4-2019; Ord. 2021-1188-O, 9-7-2021)