The following amendments are hereby made to the International Residential Code, 2021 edition:
Section 101.1 Title: Section 101.1 is amended to read as follows:
“101.1 Title. These regulations shall be known as the ‘Vail Residential Code’.”
Section R105.2: Section R105.2, Item 10 in the Building portion, is amended to read as follows:
“10. Decks not exceeding 200 sq/ft (18.6 m2) in area, not more than 30 inches (762 mm) above grade at any point, and not serving the exit door required by Section R311.4.”
Section R109.1.5: Section R109.1.5 is amended to read as follows:
“R109.1.5 Other inspections. In addition to inspections in Sections R109.1.1-R109.1.4, the building official is authorized to make or require other inspections of any construction work to ascertain compliance with this code and any other Town code, standard, requirement or regulation.”
Table R301.2: Table R301.2 is amended to read as follows:
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
GROUND SNOW LOADo | WIND DESIGN | SEISMIC DESIGN CATEGORYf | SUBJECT TO DAMAGE FROM | ICE BARRIER UNDER- LAYMENT REQUIREDh | FLOOD HAZARDSg | AIR FREEZING INDEXi | MEAN ANNUAL TEMPj | |||||
Speedd (mph) | Topo- graphical effectsk | Special wind regionl | Wind- borne debris zonem | Weatheringa | Frost line depthb | Termitec | ||||||
140 | 115 | NO | NO | NO | B | SEVERE | 48” | None to Slight | YES, 100% | - | 2500 | 37.4º |
MANUAL J DESIGN CRITERIAn
Elevation | Altitude correction factore | Coincident wet bulb | Indoor winter design relative humidity | Indoor winter design dry-bulb temperature | Outdoor winter design dry-bulb temperature | Heating temperature difference |
8150’ | .745 | 54º | 30% | 70º | -5º | 75º |
Latitude | Daily Range | Indoor summer design relative humidity | Summer design gains | Indoor summer design dry-bulb temperature | Outdoor summer design dry-bulb temperature | Cooling temperature difference |
39.64ºN | H | 50% | -33 to -53 | 75º | 82º | 7º |
Section R301.2.3 Snow loads: Section R301.2.3 is amended to read as follows:
“R301.2.3 Ground and roof snow loads. The ground snow loads to be used in determining design snow loads shall be 142 pounds per sq/ft. Designs for roof snow loads shall be as follows:
1. Roof pitches of less than 4:12 shall be designed to carry a 100 pound per sq/ft.
2. Roof pitches of 4:12 and greater shall be designed to carry an 80 pound per sq/ft.
All buildings and structures shall be designed in accordance with accepted engineering practice. Snow loads for decks and exterior balconies shall be as required for roofs.”
Section R311.7.11 Alternating tread devices: Section R311.7.11 is amended to read as follows:
“Exception: Alternating tread devices are allowed to be used as an element of a means of egress for lofts, mezzanines and similar areas of 200 gross sq/ft (18.6m2) or less where an emergency escape and rescue opening is provided for the area served and such devices do not provide exclusive access to a kitchen or bathroom.”
Section R311.7.12 Ships ladders: Section R311.7.12 is amended to read as follows:
“Exception: Ships ladders are allowed to be used as an element of a means of egress for lofts, mezzanines and similar areas of 200 gross sq/ft (18.6m2) or less where an emergency escape and rescue opening is provided for the area served and such devices do not provide exclusive access to a kitchen or bathroom.”
Section R313.1 Townhouse automatic fire sprinkler systems: Section R313.1 is amended to read as follows:
“Exception: An automatic sprinkler system is required when a Level 3 alteration, as classified by the Vail Existing Building Code, occurs to a townhouse unit that is 3,600 sq/ft or greater, including attached garages.
Existing townhouses that are 3,600 sq/ft or more may add up to 100 sq/ft of floor area without triggering the sprinkler retrofit requirement. This exemption may only be taken once and does not include a detached garage.”
Section R313.1.1 Design and installation: Section R313.1.1 is amended to read as follows:
“R313.1.1 Design and installation. Automatic residential fire sprinkler systems for townhouses shall be designed and installed in accordance with NFPA 13D, NFPA 13R or NFPA 13 standards and Vail Fire and Emergency Services fire sprinkler installation standards.”
Section R313.2 One- and two-family dwellings automatic fire sprinkler systems: Section R313.2 is amended to read as follows:
“Exception: An automatic sprinkler system is required when a Level 3 alteration, as classified by the Vail Existing Building Code, occurs to a oneor two-family dwelling that is 3,600 sq/ft or greater, including attached garages.
Existing one- or two-family dwellings of 3,600 sq/ft or more may add up to 100 sq/ft of floor area without triggering the sprinkler retrofit requirement. This exemption may only be taken once. This does not include a detached garage.
For purposes of this Section, a two-family dwelling shall be considered two separate structures.”
Section R313.2.1 Design and installation: Section R313.2.1 is amended to read as follows:
“R313.2.1 Design and installation. Automatic residential fire sprinkler systems shall be designed and installed in accordance with NFPA 13D, NFPA 13R and NFPA 13 standards and Vail Fire and Emergency Services fire sprinkler installation standards.”
Section R315.2 Where required: Section R315.2 is amended to read as follows:
“R315.2 Where required. Carbon monoxide alarms shall be provided in accordance with NFPA 72, NFPA 720, C.R.S. §38-45-101 and Vail Fire and Emergency Services alarm installation standards.”
Section R315.2.1 New construction: Section R315.2.1 is amended to read as follows:
“R315.2.1 New construction. For new construction, carbon monoxide alarms shall be provided in accordance with NFPA 72, NFPA 720, C.R.S. § 38-45-101 and Vail Fire and Emergency Services alarm installation standards.”
Section R315.3 Location: Section R315.3 is amended with the addition of the following text:
“In addition to the above locations, carbon monoxide alarms shall be provided in accordance with NFPA 72, NFPA 720, C.R.S. § 38-45-101 and Vail Fire and Emergency Services alarm installation standards.”
Section R315.7 Carbon monoxide detection systems: Section R315.7 is amended to read as follows:
“R315.7 Carbon monoxide detection systems. Carbon monoxide detection systems shall be permitted to be used in lieu of carbon monoxide alarms and shall comply with NFPA 72, NFPA 720, C.R.S. § 38-45-101 and Vail Fire and Emergency Services alarm installation standards.”
Section R315.7.2 Locations: Section R315.7.2 is amended to read as follows:
“R315.7.2 Location. Carbon monoxide detectors shall be installed in accordance with Section R315.3, as amended.”
Section R327.1 General: Section R326.1 is amended to read as follows:
“R327.1 General. The design and construction of pools and spas shall comply with Section 3109 of the Vail Building Code.”
Section R329.2 Installation: Section R329.2 is amended to read as follows:
“The installation of stationary engine generators shall be in an approved location and in accordance with the listing, the manufacturer’s installation instructions and NFPA 70.”
Section R507.2.1 Exception: Section R507.2.1 is amended by the addition of the following exception:
“Exception: An approved flashing detail in accordance with Section R507.2.4 that prevents moisture and water accumulation on member surfaces and joints may be utilized in-lieu of preservative-treated materials.”
Section R902.1 Roofing covering materials: Section R902.1 is amended to read as follows:
“R902.1 Roofing covering materials. All roof assemblies and roof coverings shall be Class A. Wood shakes and shingles are prohibited unless exempted for replacement or repair as defined below. Where the roof profile allows space between the roof covering and the roof decking at the eave ends, the spaces shall be constructed to prevent intrusion of flames and embers, or have one layer of 72-pound (32.4kg) mineral-surfaced non-perforated cap sheet complying with ASTM D3909 installed over the combustible decking.”
Section R902.1.1 Replacement or repair: Section R902.1 is amended to read as follows:
“Replacement or Repair: Each structure with a nonconforming roof covering or roof assembly shall be allowed one replacement or repair of25% or less of the roof area. Replacement or repair in excess of 25% or a second replacement or repair of the roof covering or roof assembly shall trigger replacement of the nonconforming covering or assembly in its entirety. Emergency repairs of less than 10 sq/ft shall not be subject to the 25% rule.
For purposes of this section, a two-family dwelling shall be considered two separate structures.
Exception: Metal and concrete roofing systems.”
Section R902.2 Fire-retardant-treated wood shingles and shakes is deleted.
Section R903.5 Snow retention devices: Section R903.5 is added, to read as follows:
“R903.5 Snow retention devices. New roof assemblies shall be designed to prevent accumulations of snow from shedding onto areas directly above or in front of utility meters and/or adjacent properties. The design of snow retention devices shall be provided by a registered design professional or as determined by the building official.
Exception: Roof areas with a horizontal projection of less than 48 inches that will not receive snow shedding from a higher roof. The horizontal projection shall be measured perpendicular to the exterior wall line from the edge of the roof or eave to the intersecting wall surface.”
Section R905.1.2 Ice barriers: Section R905.1.2 is amended to read as follows:
“R905.1.2 Ice barriers. Ice barriers shall be installed for all shingle types, metal roof panels and mineral-surfaced roll roofing. The ice barrier shall consist of not less than two layers of underlayment cemented together, or a self-adhering polymer modified bitumen sheet shall be used in place of normal underlayment. The ice barrier shall completely cover all roof surfaces.
Exception: Detached accessory structures that do not contain conditioned floor area.”
Section R905.7 and R905.8 are deleted.
Section R1001.1 General: Section R1001.1 is amended to read as follows:
“R1001.1 General. Masonry fireplaces shall be constructed in accordance with this Section, the applicable provisions of Chapters 3 and 4 of this code, and with Title 5, Chapter 3 of the Vail Town Code.”
CHAPTERS 11 THROUGH 43 ARE DELETED FROM THE INTERNATIONAL RESIDENTIAL CODE AND REPLACED WITH THE CORRESPONDING INTERNATIONAL CODES AND NATIONAL ELECTRICAL CODE.
(Ord. 8(2022) § 1)