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i <br /> Proposed Kittitas County Code (KCC) Amendments to <br /> International Wildland-Urban Interface Code (IWUIC) <br /> March 18, 2019 Revisions <br /> Section 105.2 Technical assistance.To determine the acceptability of technologies, processes, products, <br /> facilities, materials and uses attending the design, operation or use of a building or premises subject to <br /> the inspection of the code official,the code official is authorized to require the owner,the owner's <br /> authorized agent or the person in possession or control of the building or premises to provide,without <br /> charge to the jurisdiction, a technical opinion and report.The opinion and report shall be prepared by a <br /> federal fire agency or fire marshal's office, a state fire agency or fire marshal's office, a public university <br /> with an accredited program in Fire Sciences, or a certified scientific and objective testing agency such as <br /> Underwriters Laboratories or CSA Group Testing and Certification Inc. The Code Official shall have the <br /> authority to approve testing agencies. a qualified e+.g+r}ee., laterater.,eF fiFe safety s alty <br /> The <br /> opinion and report shall analyze the fire safety of the design,fire resistance of building products, <br /> operation or use of the building or premises,the facilities and appurtenances situated thereon and fuel <br /> management for purposes of establishing fire hazard severity to recommend necessary changes. <br /> 504.5 Exterior walls. Exterior walls of buildings or structures shall be constructed with one of the <br /> following methods: <br /> 1. Materials approved for not less than 1-hour fire-resistance-rated construction on the exterior side. <br /> 2.Approved noncombustible materials. <br /> 3. Heavy timber or log wall construction. <br /> 4. Fire-retardant-treated wood on the exterior side. The fire-retardant-treated wood shall be labeled for <br /> exterior use and meet the requirements of Section 2303.2 of the International Building Code. <br /> 5. Ignition-resistant materials on the exterior side. Ignition-resistant materials shall include materials <br /> treated with a fire retardant product tested in accordance with ASTM E84 or approved by an <br /> independent testing laboratory. Testing shall be performed by a certified scientific and objective testing <br /> agency such as Underwriters Laboratories or CSA Group Testing and Certification Inc. The Code official <br /> shall have authority to approve of testing agencies. The applicant shall provide an affidavit confirming <br /> that all fire retardant products were applied according to the product specifications and shall record a <br /> notice to title notifying future landowners of requirements for future reapplication of the product. <br /> Such material shall extend from the top of the foundation to the underside of the roof sheathing. <br /> 504.10.1 Vent locations. Attic ventilation openings shall not be located in soffits, in eave overhangs, <br /> between rafters at eaves, or in other overhang areas. Ventilation openings may be allowed in these <br /> areas provided they are approved by Cal Fire, approved by an independent testing laboratory such as <br /> Underwriters Laboratories,American National Standards Institute (ANSI), or ICC Evaluation Service (ICC- <br /> ES), or approved by the Code Official per Section 105.2. Gable end and dormer vents shall be located <br /> not less than 10 feet(3048 mm)from lot lines. Underfloor ventilation openings shall be located as close <br /> to grade as practical. <br />