9-1-1: CODES ADOPTED:
The following nationally recognized codes are adopted as the official Building Codes of the City of Hayden:
   A.   International Building Code: The International Building Code, 2018 edition, prepared by the International Code Council, Inc., as adopted by the State of Idaho through the Idaho Building Code Board, together with any amendments or revisions to the International Building Code made by the Idaho Building Code Board through the negotiated rulemaking process, is adopted with the following exceptions or amendments:
Section 103.2 Scope and Administration; Department of Building Safety; Appointment; is deleted
Section 103.3 Scope and Administration; Department of Building Safety; Deputies; is deleted.
Section 107.1 Scope and Administration; Submittal Documents; General; this section and exceptions are deleted and shall be replaced with the following section and exception:
Submittal documents consisting of construction documents, statement of special inspections, geotechnical reports, structural observation programs, and other data shall be submitted in .PDF of the plan set with each permit application. The architectural construction documents shall be prepared by an architect licensed to practice by the State of Idaho. The building official shall have the option to stipulate that an Idaho licensed engineer in the appropriate engineering discipline (structural, mechanical, electrical, civil, geotectonic, acoustical, etc.) of his or her expertise may submit supplement construction documents supportive and complementary to the architect's construction documents. When deemed appropriate by the building official, applications and construction documents may be submitted by a licensed design professional acting within his or her field of competency and expertise.
Exception: The building official is authorized to waive the submission of construction documents and other data not required to be prepared by an Idaho licensed design professional if it is found that the nature of the work applied for is such that review of the construction documents is not necessary to obtain compliance with this code.
Section 406.3.2.1 Special Detailed Requirements Based on Use and Occupancy; Motor Vehicle Related Occupancies; Private Garages and Carports, Separation; Dwelling Unit Separation; delete section and replace with the following:
The private garage shall be separated from the dwelling unit and its attic area, including supporting members with materials approved for one-hour fire-resistive construction on the garage side and a self-closing, tight-fitting solid-wood door 13/8 inches in thickness, or a self-closing, tight-fitting 20-minute fire-rated door, or solid or honeycomb steel doors not less than 13/8 inches (34.9 mm) thick, or doors in compliance with section 716.5.1 and 716.5.3.1. Openings from a private garage directly into a room used for sleeping purposes shall not be permitted.
Garages, including the attic space, located less than three (3) feet from a dwelling unit on the same lot shall be protected with not less than one (1) layer of 5/8" type `X' gypsum wallboard or equivalent on the garage side.
Section 1202.4 Interior Environment; Ventilation; Underfloor ventilation; add the following to the end of the section:
A minimum of class I vapor retarder shall be provided in the under floor areas extending from wall to foundation wall.
Section 1608.2 Structural Design; Snow Loads; Ground snow loads; delete section and replace with the following:
The roof load shall be designed using site specific ground snow loads and shall be designed in accordance with accepted engineering practices. The design snow loads for roofs shall be determined using factors and methodology contained in the publication, Ground And Roof Snow Loads For Idaho and accompanying map "ground snow loads for Idaho" by the University Of Idaho, Moscow, Idaho, 1986, and shall be site specific.
Section 1807.1.6.2 Soils and Foundations; Foundation Walls, Retaining Walls and Embedded Posts and Poles; Concrete foundation walls; delete items #1 and #2 and table 1807.1.6.2 and replace items #1 and #2 with the following:
Minimum reinforcement for foundation walls which do not exceed four (4) feet in height shall be four (4) feet on center for vertical reinforcement and two (2) feet on center for horizontal reinforcement. Foundation walls over four (4) feet in height (unless closer spacing is specified by design or engineering specification) shall be eighteen (18) inches minimum on center for horizontal and vertical reinforcement. All continuous footings will require a minimum two (2) continuous horizontal reinforcing bars. Reinforcing bars shall be a minimum size of #4 and may be a minimum grade forty (40). Foundation walls are permitted to be otherwise designed by an Idaho licensed engineer.
Foundation walls over eight feet in height shall be designed by an Idaho licensed engineer.
Section 1809.5 Soils and Foundations; Shallow Foundations; Frost protection; delete method 1 and replace with the following:
      1.   Extending below the frost line a minimum of 24 inches from the ground surface to the bottom of the footing
Add a new section 1905.1.9 Concrete; Modifications to ACI 318; Minimum Reinforcement; as follows:
All continuous footings will require a minimum of two (2) continuous horizontal reinforcing bars. Footings supporting columns and piers shall contain no less than two (2) #4 rebar installed each way, not to exceed twelve (12) inches maximum spacing.
Minimum reinforcement for foundation walls (unless closer spacing is specified by design or engineering specifications) which do not exceed four (4) feet in height shall be four (4) feet on center for vertical reinforcement and two (2) feet on center for horizontal reinforcement. One continuous row of horizontal #4 rebar shall be located between three (3) inches and six (6) inches of top and bottom of wall.
Foundation walls over four (4) feet in height (unless closer spacing is specified by design or engineering specifications) shall be eighteen (18) inches minimum on center for horizontal and vertical reinforcement. Reinforcing bars shall be a minimum size of #4 and may be a minimum grade forty (40). One (1) continuous row of horizontal #4 rebar shall be located between three (3) inches and six (6) inches of top and bottom of wall. No less than two (2) #4 rebar shall be installed around door, window, and similar sized openings.
Walls over eight feet in height shall be designed by an Idaho licensed engineer.
   B.   International Residential Code: The International Residential Code (IRC) 2018 edition and prepared by the International Code Council, Inc., together with any amendments or revisions to the International Building Code to reflect on the 2018 IRC made by the Idaho Building Code Board through the negotiated rulemaking process, is adopted with the following exceptions or amendments:
Section R103.2 Scope and Administration; Part 2 - Administration and Enforcement; Department of Building Safety; Appointment; is deleted.
Section R103.3 Scope and Administration; Part 2 - Administration and Enforcement; Department of Building Safety; Deputies; is deleted.
Section R106.1.4 Scope and Administration; Part 2 - Administration and Enforcement; Construction Documents; Information for construction in flood hazard areas; delete section and replace with the following:
For buildings and structures located in whole or part in flood hazard areas as established by Hayden City Code Title 13, Chapter 1, Flood Damage Prevention, construction documents shall include:
      1.   Delineation of flood hazard areas, floodway boundaries and the design flood elevation, pursuant to the City's adopted Flood Damage Prevention Ordinance.
      2.   The elevation of the proposed lowest floor and the height of the proposed lowest floor, including basement, above the highest adjacent grade.
Section R301.2.3 Building Planning; Climate and geographic design criteria; Snow loads; delete the section and replace with the following:
The minimum ground snow load shall be a minimum of sixty (60) pounds per square foot south of Miles Avenue and seventy (70) pounds a square foot north of Miles Avenue. The minimum roof design snow load shall be forty (40) pounds per square foot south of Miles Avenue and fifty (50) pounds per square foot north of Miles Avenue. No manufactured home, commercial coach or modular building shall be placed that has not been constructed to withstand a minimum forty (40) pound per square foot roof load, or the owner has provided for a separate roof cover that is constructed to provide the required roof load, except that manufactured homes that are already installed in a location within the city limits at the time of the passage of this section may remain without having to meet the minimum roof load set forth herein. Any manufactured home allowed to remain under this section may be moved to a different location within the city limits without having to meet the forty (40) pound roof load providing that it meets all city of Hayden zoning requirements.
Buildings in regions with ground snow loads of greater than 70 pounds per square foot shall be designed in accordance with accepted engineering practice. Construction in regions with ground snow loads greater than sixty (60) but not exceeding seventy (70) pounds per square foot may be either a minimum of 50 pounds per square foot or shall be designed in accordance with accepted engineering practices. The design snow loads for roofs shall be determined using factors and methodology contained in the publication, Ground and Roof Snow Loads for Idaho and accompanying map "ground snow loads for Idaho" by the University Of Idaho, Moscow, Idaho, 1986 and shall be site specific.
Section R301.2.4 Building Planning; Climate and geographic design criteria; Floodplain construction; delete section and replace with the following:
Buildings and structures constructed in whole or in part in flood hazard areas as established in Hayden City Code Title 13, Chapter 1 Flood Damage Prevention shall be designed in accordance with Section R322, or the Hayden City Code, whichever is more restrictive. Buildings and structures that are located in more than one flood hazard area shall comply with the provisions associated within the most restrictive flood hazard area. Building and structures located in whole or in part in identified floodways shall be designed and constructed in accordance with ASCE 24 and Hayden City Code Title 13, whichever is more restrictive.
Section R302.5.3 Building Planning; Fire Resistant Construction; Dwelling-garage opening and penetration protection; Other penetrations; delete section and replace with the following:
Penetrations through the separation required in section R302.5.1 shall be protected with approved materials to resist the passage of flame and products of combustion. The materials filling the penetration annular space shall meet the requirements of ASTM E 814 or UL 1479.
Section R302.6 Building Planning; Fire Resistant Construction; Dwelling-garage fire separation; delete section and replace with the following:
TABLE R302.6
 
SEPARATION
MATERIAL
From the residence and attics
Not less than 5/8-inch Type X gypsum board or equivalent applied to the garage side
From habitable rooms above the garage and roof/ceiling assemblies
Not less than 2 layers of 5/8-inch Type X gypsum board or equivalent
Structure(s) supporting floor/ceiling assemblies used for separation required by this section
Not less than 5/8-inch Type X gypsum board or equivalent
Garages located less than 3 feet from a dwelling unit on the same lot
Not less than 5/8-inch Type X gypsum board or equivalent applied to the interior side of the exterior walls that are within this area
 
Garages, including the attic space, located less than three (3) feet from a dwelling unit on the same lot shall be protected with not less than 5/8" Type X Gypsum board or equivalent applied to the interior side of exterior walls that are within this area.
Section R302.6 Building Planning; Fire Resistant Construction; Dwelling-garage fire separation; Table 302.6 Dwelling Garage Separation; is deleted.
Section R302.7 Building Planning; Fire Resistant Construction; Under Stair Protection; delete section and replace with the following:
Enclosed accessible space under stairs shall have walls, under stair surface and any soffits protected on the enclosed side with 5/8-inch type X gypsum board.
Section R322.1 Building Planning; Flood Resistant Construction; General; replace section as follows:
Buildings and structures constructed in whole or part in flood hazard areas and substantial improvement and restoration of substantial damage of building and structures in flood areas shall be designed and constructed in accordance with the provisions contained in this section and Hayden City Code Title 13, Chapter 1 Flood Damage Prevention. The design flood elevation shall be the Flood Protection Elevation as established in Hayden City Code. Building and structures that are located in whole or in part in identified floodways shall be designed and constructed in accordance with ASCE 24. Where conflict between the provisions of the IRC and City Code arise, the more restrictive requirement shall apply.
Section R403.1.4.1 Foundations; Footings; Minimum depth; Frost Protection; replace method 1 with the following:
      1.   Extending below the frost line specified in table R301.2(1); with a minimum twenty-four (24) inches from ground surface to the bottom of a footing.
Section R404.1.3.2 Foundations; Foundation and Retaining Walls; Concrete and masonry foundation walls; Concrete foundation walls; Reinforcement for foundation walls; replace the section with the following:
All continuous footings will require a minimum of two (2) continuous horizontal reinforcing bars. Footings supporting columns and piers shall contain no less than two (2) #4 rebar installed each way, not to exceed twelve (12) inches maximum spacing.
Minimum reinforcement for foundation walls (unless closer spacing is specified by design or engineering specifications) which do not exceed four (4) feet in height shall be four (4) feet on center for vertical reinforcement and two (2) feet on center for horizontal reinforcement. One continuous row of horizontal #4 rebar shall be located between three (3) inches and six (6) inches of top and bottom of wall.
Foundation walls over four (4) feet in height (unless closer spacing is specified by design or engineering specifications) shall be eighteen (18) inches minimum on center for horizontal and vertical reinforcement. Reinforcing bars shall be a minimum size of #4 and may be a minimum grade forty (40). One (1) continuous row of horizontal #4 rebar shall be located between three (3) inches and six (6) inches of top and bottom of wall. No less than two (2) #4 rebar shall be installed around door, window, and similar sized openings.
Walls over eight feet in height shall be designed by an Idaho licensed engineer.
Section R408.1 Foundations, Under-floor Space, Ventilation; delete section and replace with the following:
The underfloor space between the bottom of the floor joists and the earth under any building (except space occupied by a basement) shall have ventilation openings through foundation walls or exterior walls. The minimum net area of ventilation openings shall not be less than 1 square foot (0.0929 m2) for each 150 square feet (14 m2) of under-floor space area. One such ventilating opening shall be within three feet (914 mm) of each corner of the building. The ground surface of all under-floor spaces shall be provided with a continuous class 1 vapor retarder.
Section R408.2. Foundations, Under-floor Space, Openings for under-floor ventilation; delete exception.
Part V Mechanical is adopted.
Pat VI Fuel Gas is adopted.
Part VII: Plumbing and Part VIII Electrical are not adopted.
Appendices are not adopted except for the following:
Appendix J Existing Buildings and Structures
Appendix K sound transmission.
   C.   International Energy Conservation Code: The International Energy Conservation Code, 2018 edition, prepared by the International Code Council, Inc., together with any amendments or revisions to the Building Code made by the Idaho Building Code Board through the negotiated rulemaking process is adopted and shall be the Energy Conservation Code of the Municipality with the following amendments or exemptions:
Section 101.2 Scope and Administration; Scope; add the following language:
Exemption: Unconditioned structures or portions thereof are exempt from the energy codes adopted herein.
   D.   International Existing Building Code: The 2018 edition of the International Existing Building Code, as prepared by the International Code Council, Inc., together with any amendments or revisions made by the Idaho Building Code
Board through the negotiated rulemaking process, is adopted with the following amendments or exceptions:
Section 103.2 Scope and Administration; Part 2 Administration and Enforcement; Appointment; is deleted.
Section 103.3 Scope and Administration; Part 2 Administration and Enforcement; Deputies; is deleted.
   E.   International Mechanical Code: The 2018 edition of the International Mechanical Code, as prepared by the International Code Council, Inc., together with any amendments or revisions made by the Idaho Building Code Board through the negotiated rulemaking process, is hereby adopted as the Mechanical Code of the City to provide a minimum standard for all electric wiring, installation of electrical fixtures, apparatus or electrical appliances, for furnishing light, heat or power, or other electrical work introduced into or placed in or upon or in any way connected on any building or structure within the limits of the City, is adopted with the following amendments or exceptions:
Section 103.2 Scope and Administration; Part 2 Administration and Enforcement; Appointment; is deleted.
Section 103.3 Scope and Administration; Part 2 Administration and Enforcement; Deputies; is deleted.
   F.   International Fuel Gas Code: The 2018 edition, as prepared by the International Code Council, Inc., together with any amendments or revisions made by the Idaho Building Code Board through the negotiated rulemaking process, is hereby adopted as the Fuel Gas Code of the City for any installation of gas appliances and gas piping. Provisions for the issuance of permits and collection of fees, and all regulations, conditions, provisions and terms of such code is hereby adopted and made part hereof as if fully set forth in this chapter.
Section 103.2 Scope and Administration; Department of Inspections; Appointment; is deleted.
Section 103.3 Scope and Administration; Department of Inspections; Deputies; is deleted.
   G.   International Swimming Pool And Spa Code: International Swimming Pool and Spa Code, 2015 edition, is adopted.
   H.   Fees Prescribed: The City Council shall be and hereby is authorized from time to time to promulgate and prescribe building permit fees by resolution. (Ord. 577, 1-9-2018; amd. Ord. 616, 12-29-2020)