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Section R202 Definitions, of the IRC, is hereby amended by re-defining accessory structure and adding the definition of swimming pool and inserting in lieu thereof the following:
Section R202 Accessory Structure Accessory structures shall be defined as and shall conform to applicable zoning requirements and shall include but not be limited to structures and equipment with a fixed location on the ground, including wind energy systems, generators and equipment shelters.
Section 202 Swimming Pool Any structure intended for swimming, recreational bathing, wading, or aesthetic purposes that is capable of containing water over 24 inches deep. This includes in-ground, above-ground, and on-ground pools, hot tubs, spas, fixed-in-place wading pools, and landscape ponds, but excludes manmade lakes or ponds created through the collection of storm water or drainage runoff.
Table R301.2, Climatic and Geographic Design Criteria, of the IRC, is hereby amended by modifying said table and adding footnote * as follows :
Table R301.2, Climatic and Geographic Design Criteria
Ground Snow Load | Wind Design | Seismic Design Category | Subject To Damage From | Winter | Flood Hazards | ||||||||
Speed MPH | Topo Effects | Special Wind | Wind Debris | Weathering | Frost Line Depth | Termite | Design Temp | Ice Barrier Req'd. | NFIP Adoption | Air Freezing Index | Mean Annual Temp. | ||
*30 psf | 115 (51) | No | No | No | A | Severe | 42” | No | - 5º F | Yes | 1-Feb-19 | 1833 | 48.6 |
See Manual J for HVAC Design Criteria | |||||||||||||
* minimum flat roof snow load 24 PSF
Section R302.1, Exterior walls, of the IRC, is hereby amended by deleting all exceptions and inserting in lieu thereof the following exception:
Section R302.1 Exterior walls exception #1 Accessory buildings including detached garages less than six feet (6') from a dwelling and/or less than 3 feet from a property line shall be provided with 5/8" "X" fire code sheetrock or equivalent throughout the interior, including the walls and ceiling. Any accessory structure opening(s) in wall(s) parallel to and less than six feet (6') from dwelling unit wall(s) shall be fire rated in accordance with this code.
Table R302.1(1), Exterior Walls, of the IRC, is hereby amended by modifying said table as follows:
Exterior Wall Element | Minimum Fire-Resistance Rating | Minimum Fire Separation Distance | |
Walls | (Fire-resistance rated) | Dwellings - 1 hour - tested in accordance with ASTM E119, UL 263 or Section 703.3 of the International Building Code with exposure from both sides | < 5 feet |
(Fire-resistance rated) | Accessory Structures - 1 hour - tested in accordance with ASTM E119, UL 263 or Section 703.3 of the International Building Code with exposure from both sides | < 3 feet | |
(Not fire-resistance rated) | Dwellings - 0 hours | ≥ 5 feet | |
(Not fire-resistance rated) | Accessory Structures - 0 hours | ≥ 3 feet | |
Projections | (Fire-resistance rated) | Dwellings - 1 hour on the underside, or heavy timber, or fire-retardant-treated wood | < 3 feet |
(Fire-resistance rated) | Accessory Structures - 1 hour on the underside, or heavy timber, or fire-retardant-treated wood<2 feet | <2 feet | |
(Not fire-resistance rated) | Dwellings - 0 hours | ≥ 3 feet | |
(Not fire-resistance rated) | Accessory Structures - 0 hours | ≥ 2 feet | |
Openings | Not allowed | N/A | < 3 feet |
25% Maximum Wall Area | 0 hours | ≥ 3 feet | |
Unlimited | 0 hours | ≥ 5 feet | |
Penetrations | All | Comply with Section R302.4 | < 3 feet |
None required | ≥ 3 feet | ||
Section R302.3 Two-family dwellings, of the IRC, is hereby amended by deleting said section and exceptions and inserting in lieu thereof the following section:
R302.3 Two-family dwellings For purposes of fire-resistive separation, two-family dwelling units shall be considered as townhouse units and shall be constructed in accordance with R302.2
Section R302.6, Dwelling/garage fire separation, of the IRC, is hereby amended by deleting said section and inserting in lieu thereof the following section:
Section R302.6 Dwelling/garage fire separation The garage shall be separated throughout as required by Table R302.6. Openings in garage walls shall comply with section R302.5.
Table R302.6 Dwelling/Garage Separation, of the IRC, is hereby amended by modifying said table as follows:
Table R302.6, Dwelling/garage separation
Separation | Material |
From the residence & attics – common wall with garage | 5/8” “X” fire code sheetrock or equivalent applied to the garage side |
From all habitable rooms above the garage | 5/8” “X” fire code sheetrock or equivalent – throughout garage |
Structures supporting floor/ceiling assemblies used for separation required by this section | 5/8” “X” fire code sheetrock or equivalent – throughout garage |
Detached garages located less than six feet (6’) from a dwelling unit(s) on the same lot | 5/8” “X” fire code sheetrock or equivalent – throughout garage |
Section R302.13, Fire Protection of Floors, of the IRC, is hereby amended by deleting exception 4 and inserting in lieu thereof the following:
Section R302.13 exception 4 Approved floor assemblies demonstrating equivalent fire performance by an approved testing company showing length and time duration for exposure to fire. It shall be defined by performance equivalent to 26 minutes using ASTM E119 standard fire endurance testing with a superimposed load simulating a maximum load condition (i.e. 100% design load).
Section R303.3, Bathrooms, of the IRC, is hereby amended by deleting said section and inserting in lieu thereof the following section and also by adding the following exception:
Section R303.3 Bathrooms Bathrooms shall be provided with a mechanical ventilation system. The minimum ventilation rates shall be 50 cfm for intermittent ventilation or 20 cfm for continuous ventilation. Ventilation air from the space shall be exhausted directly to the outside.
Exception: Toilet rooms containing only a water closet and/or lavatory may be provided with a recirculating fan.
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