10-1-3: AMENDMENTS TO THE INTERNATIONAL RESIDENTIAL CODE:
The following amendments are hereby made to the International Residential Code, 2018 edition:
Section R101.1 Title: Section R101.1 is amended to read as follows:
   "R101.1 Title. These provisions shall be known as the Residential Code of the Town of Vail, hereinafter referred to as 'this code'".
Section R105.2 Work exempt from permit: Section R105.2 is amended to read as follows:
   "Building:
   2. Fences not over 6 feet high.
   10. Decks that are not over 30 inches above grade at any point and do not serve the exit door required by Section R311.4."
Section R109.1.5 Other inspections: Section R109.1.5 is amended by the addition of the following text:
   "The Building Official shall also be authorized to make or require inspections of construction work as required by Chapter 17 of the International Building Code and by Titles 11 through 14 of the Town of Vail Municipal Code."
Table R301.2(1) Climatic and Geographic Design Criteria: Table R301.2(1) is amended to read as follows:
 
Climate Zone
Ground Snow Load
Wind Speed (mph)
TopographicEffects
Seismic Design Category
Weathering
Frost Line
Termite
Winter Design Temp
Ice Barrier Underlayment Required
Air Freezing Index
6B
142
115
B
B
Severe
48
Slight/Mod.
-5
Yes
2500
 
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 load for the Town of Vail is 142 pounds per square foot. 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 square foot snow load.
   2. Roof pitches of 4:12 and greater shall be designed to carry an 80 pound per square foot snow load.
   There is no allowance for pitch reduction nor is there a requirement to increase surcharge loading due to snow drifting or type of roof covering. Snow loads for decks and exterior balconies shall be as required for roofs. All buildings and structures shall be designed in accordance with accepted engineering practice."
Table R301.5 Maximum Uniformly Distributed Live Loads: Table R301.5 is amended by deleting "Balconies (exterior) and decks" and "Fire escapes" from the table and adding new footnote (i) to read as follows:
   "Note i. The minimum uniformly distributed live loads for exterior balconies and decks shall be 100 psf."
Section R302.1 Exterior Walls: Section R302.1 is amended by adding the following text:
   "Exception 6: Projections, openings or penetrations in shared walls of two-family dwelling units with a lot line separating the units along the shared wall."
Section R302.15 Additional fire-resistive construction requirements: A new Section R302.15 is adopted to read as follows:
   “R302.15 Additional fire-resistive construction requirements. The provisions of Chapter 7A of the International Building Code, as adopted and amended, shall apply to the construction, alteration, movement, repair, maintenance and use of any building, structure or premises within the wildland-urban interface area of the Town of Vail.
   Exceptions:
      1.   Additions or alterations less than 500 gross square feet in size.
      2.   Repair or replacement of less than twenty-five percent (25%) of a deck surface or structure.
      3.   Accessory structures not exceeding 120 square feet in floor area where located not less than 30 feet from buildings containing habitable spaces.
      4.   Agricultural buildings located not less than 30 feet from buildings containing habitable spaces.
   Buildings or structures moved into or within the jurisdiction shall comply with the provisions of this Chapter for new buildings or structures.”
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 square feet (18.6 m2) 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 square feet (18.6 m2) 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 residential fire sprinkler system may be required where additions and alterations are made to existing townhouses depending on scope and size of the project in accordance with Vail Fire and Emergency Services fire sprinkler installation requirements."
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 and Vail Fire and Emergency Services fire sprinkler installation requirements."
Section R313.2 One- and two-family dwellings automatic fire sprinkler systems: Section R313.2 is amended to read as follows:
   "Exception: An automatic residential fire sprinkler system may be required where additions and alterations are made to existing buildings depending on scope and size of the project in accordance with Vail Fire and Emergency Services fire sprinkler installation requirements."
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 and Vail Fire and Emergency Services fire sprinkler installation requirements."
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 R326.1 General: Section R326.1 is amended to read as follows:
   "R326.1 General. The design and construction of pools and spas shall comply with Section 3109 of the International Building Code, as amended."
Section R507.2.1 Wood materials: Section R507.2.1 is amended with 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. In accordance with Town of Vail Municipal Codes, all roof coverings shall be Class A roofing only. Class A roofing required by this section to be listed shall be tested in accordance with UL 790 and ASTM E108. Wood shakes and shingles are not permitted except where 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 (32.4 kg) mineral-surfaced non-perforated cap sheet complying with ASTM D3909 installed over the combustible decking.
   Replacement or Repair: Each structure with a nonconforming roof covering or roof assembly shall be allowed one (1) replacement or repair of twenty five percent (25%) or less of the roof area. Replacement or repair in excess of twenty five percent (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. For purposes of this section, a two-family dwelling shall be considered two separate structures. Emergency repairs of less than 10 square feet shall not be subject to the twenty five percent (25%) rule.
   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 asphalt shingles, metal roof panels and shingles, mineral-surfaced roll roofing, slate, slate-type and other shingles. 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 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 of the Town of Vail Municipal Code."
CHAPTERS 11 THROUGH 43 ARE DELETED FROM THE INTERNATIONAL RESIDENTIAL CODE AND REPLACED WITH THE CORRESPONDING INTERNATIONAL CODES AND NATIONAL ELECTRICAL CODE.
(Ord. 17(2018) § 1 ; Ord. 19(2019). § 2 )