(A) The 2021 edition of the International Residential Code published by the International Code Council Chapters 1 through 24, and Chapters 33 and 44 including Appendices AE, AH, AI, AJ, AK, AM and AQ, AU, with the amendments as specified in this section and in § 17.28.020, shall apply to the design, erection, construction, enlargement, alteration, repair, moving, removal, demolition, conversion, occupancy, equipment, use, height, area and maintenance of detached one- and two-family dwellings and townhouses not more than three (3) stories above grade plane in height with a separate means of egress and their accessory structures not more than three stories above grade plane in height in the city.
(B) The version of the International Residential Code applicable as the residential building code for buildings used for residential purposes containing four (4) or fewer dwelling units shall be determined by the date construction began, as determined by the date the foundation began installation.
(C) The 2020 edition of ICC 600 Standard for Residential Construction in High Wind Regions shall apply to the design, erection, construction, enlargement, alteration, repair, moving, removal, demolition, conversion, occupancy, equipment, use, height, area and maintenance of conventional light-frame construction of IRC Section 301.
(Am. Ord. 2022-18, passed 11-10-22)
The following revisions are made to the IRC as adopted by reference in § 17.28.010:
(A) Amend each and all the references contained in the IRC which refer to the "International Building Code" by replacing each and all with "Building Code" as adopted by § 17.12.010.
(B) Amend each and all the references contained in the IRC which refer to the "ICC Electrical Code" by replacing each and all with "NFPA 70, National Electrical Code" as adopted by § 17.20.010.
(C) Amend each and all the references contained in the IRC which refer to the "International Plumbing Code" by replacing each and all with "Uniform Plumbing Code" as adopted by § 17.16.010.
(D) Excluded from adoption are sections R103, R104.4, R106.3.1, R109, R110, R112, R313, and Chapters 15 through 32 and 34 through 43; and Appendices AA through AD, AF, AG, AL, AN through AP, AR through AS, and AV through AX.
(E) R101.1. Insert "City of Unalaska" for [NAME OF JURISDICTION].
(F) R101.2. Exclude Exception 2.
(G) R105.3. Amend to read: "To obtain a permit, the applicant shall first file an application therefor in writing on a form furnished by the city for that purpose and by meeting other guidelines published by the Unalaska Department of Public Works and Department of Public Utilities".
(H) R108.6. Insert the following at the end of the paragraph: "This fee shall be the same as the building permit fee".
(I) R301. Conventional light-frame construction as detailed in this section does not apply in Unalaska due to basic three-second (3 second) gust wind speed in excess of one hundred and ten (110) miles per hour. Amend this section by replacing all light-frame standards with the standards found in ICC 600 Standard for Residential Construction in High Wind Regions (2020 Edition).
(J) R301.2(1). Add the following information in the table:
Ground snow load | 60 PSF |
Wind speed (3-second gust basic) | 165 mph |
Seismic design category | D2 |
Subject to damage from: | |
Weathering | Yes, severe |
Frost line depth | 48 inches |
Termite | No |
Winter design temperature | -10 degrees Fahrenheit |
Flood hazards | No |
Ice shield underlayment required | Yes |
Air freezing index | 2,500 |
Mean annual temperature | 35 degrees Fahrenheit |
(Am. Ord. 2022-18, passed 11-10-22)