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Home My WebLink About2018-02-26-minutes-cds-study-sessionKITTITAS COUNTY COMMISSIONERS CDS Study Session Regular Meeting Monday February 26, 2018 -1:30 PM Commissioners' Auditorium 205 West 5th Room 109 - Ellensburg 1 Call to Order 2. Voluntary Stewardship Program (VSP) Status Update 3. Discussion Regarding Use of Intumescent Finishes 4. Discussion Regarding Wildland Urban Interface Map 5. Other business 6. Adjourn Created on 2/23/2018 10:09:52 AM KITTITAS COUNTY COMMUNITY DEVELOPMENT SERVICES >>lW .HCl 411 N. Ruby St., Suite 2, Ellensburg, WA 98926 CDS@CO.KITTITAS. WA.US Office (509) 962-7506 "Building Partnerships — Building Communities" Fax (509) 962-7682 Kf1TrrAS COUNTY CDS STUDY SESSION MINUTES February 26, 2018 —1:30 PM THOSE PRESENT: Paul Jewell, Obie O'Brien (BOCC) Dan Carlson, Stephanie Mifflin, Lindsey Ozbolt Calvana Carper (CDS) Mark Cook, Candie Leader (PW), Clay Myers (Sheriff), GUESTS PRESENT: Joe Seemiller, John Sinclair (KVFR), Anna Lael (KCCD), Daily Record Reporter Voluntary Stewardship Prozram WSP) Status Update: Ms. Lael shared that the watershed group gave approval to submit the work -plan to State Conservation Commission on March 1, 2018. There will be a 2 week public comment period. Following that period, they will then present their work plan to the State Technical Panel. Final presentation will be April 27, 2018, Implementation to begin immediately upon approval. To view drafts and comment matrixes, www.KCCD.net Board Direction: None. Discussion Rej?ardin_g Use of Intumescent Finishes: Mr. Carlson, CDS Director, stated that there have been requests from various Fire Districts urging the County to not allow field applied intumescent finishes as alternative means for non-combustible building materials as a requirement from WUI Code. He stated the current practice was result of past Fire Marshal interruption of the WUI Code. Mr. Flory, Building Official, explained that the WUI stated that fire retardant treated wood shall be label for exterior use and meet requirement in section 23.032 of the International Building Code. The current building code states that fire retardant treated wood is any wood product which is impregnated with chemicals via pressured process or other means during manufacturing. The building code doesn't discuss field applied intumescent paints, stains, or additivities, to help meet non-combustible status or ignition resistant status. The building code further states that this practice would require additional inspections under chapter 17. Mr. Flory shared that the conditions of these special inspections would be difficult to inspect and meet standards set forth in the code. Field applied intumescent finishes have the longevity of 2-5 years based on the manufacturer and based on the conditions. The reapplication process is the critical piece that can't be verified at this point. Mr. Sinclair stated he recommends that the county move swiftly and not allow this practice to be used moving forward. Mr. Seemiller stated that he suspected that someone in the past saw the intumescent finishes as an equivalency to fire resistant materials, which is not the case. Board Direction: Call a meeting with the Central Washington Homebuilders Association to discuss how this practice will impact the community moving forward. Discussion Re,ardin, Wildland Urban Interface Map: Mr. Carlson recommended that the county take a look at the map and take into account some of the risk factors like vegetation, irrigation, and population density. Updating the map would balance out the IR -1 rating zones. Board Direction: Call a meeting with the builder community and hear this input regarding updating the Wildland Urban Interface Map. X -4-? Dan Carlson, Director X Paul Jewell, ChaFinan COMMUNITY PLANNING • BUILDING INSPECTION • PLAN REVIEW • ADMINISTRATION 0 PERMIT SERVICES • CODE ENFORCEMENT WUIC CODE REQUIREMENTS FOR NON-COMBUSTIBLE MATERIALS WUIC 504.5 Exterior walls. Exterior walls of buildings or structures shall be constructed with one of the following methods: 1. Materials approved for not less than 1 -hour fire -resistance -rated construction on the exterior side. 2. Approved noncombustible materials. 3. Heavy timber or log wall construction. 4. Fire -retardant -treated wood on the exterior side. The fire -retardant -treated wood shall be labeled for exterior use and meet the requirements of Section 2303.2 of the International Building Code. 5. Ignition -resistant materials complying with Section 503.2 on the exterior side. Such material shall extend from the top of the foundation to the underside of the roof sheathing. WUIC 503.2 Ignition -resistant building material. Ignition -resistant building materials shall comply with any one of the following: 1. Material shall be tested on all sides with the extended ASTM E 84 (UL 723) test or ASTM E 2768, except panel products shall be permitted to test only the front and back faces. Panel products shall be tested with a ripped or cut longitudinal gap of 1/8 inch (3.2mm).Materials that, when tested in accordance with the test procedures set forth in ASTM E 84 or UL 723 for a test period of 30 minutes, or with ASTM E 2768, comply with the following: 1.1. Flame spread. Material shall exhibit a flame spread index not exceeding 25 and shall not show evidence of progressive combustion following the extended 30 - minute test. 1.2. Flame front. Material shall exhibit a flame front that does not progress more than 10 '/ feet (3200 mm) beyond the centerline of the burner at any time during the extended 30 -minute test. 1.3. Weathering. Ignition -resistant building materials shall maintain their performance in accordance with this section under conditions of use. Materials shall meet the performance requirements for weathering (including exposure to temperature, moisture and ultraviolet radiation) contained in the following standards, as applicable to the materials and the conditions of use: 1.3.1. Method A "Test Method for Accelerated Weathering of Fire - Retardant -Treated Wood for Fire Testing" in ASTM D 2898, for fire retardant - treated wood, wood -plastic composite and plastic lumber materials. 1.3.2. ASTM D 7032 for wood -plastic composite materials. 1.3.3. ASTM D 6662 for plastic lumber materials. 1.4. Identification. All materials shall bear identification showing the fire test results. Exception, Materials comprised of a combustible core and a noncombustible exterior covering, comprised of made from either aluminum at a minimum 0.019 inch (0.48 mm) thickness or corrosion -resistant steel at a minimum 0.0149 inch (0.38 mm) thickness shall not be required to be tested with a ripped or out longitudinal gap. 2. Noncombustible material. Material that complies with the requirements for noncombustible materials in Section 202. 3. fire-retardant4reated wood. Fire -retardant -treated wood identified for exterior use and meeting the requirements of Section 2303.2 of the International Building Code. 4. Fire -retardant -treated wood roof coverings. Roof assemblies containing fire-retardanttreated wood shingles and shakes that comply with the requirements of Section 1505.6 of the Intemational Building Code and classified as Class A roof assemblies as required in Section 1505.2 of the Intemational Building Code. IBC 2303.2 Fire -retardant -treated wood. Fire -retardant -treated wood is any wood product which, when impregnated with chemicals by a pressure process or other means during manufacture, shall have, when tested in accordance with ASTM E84 or UL 723, a listed flame spread index of 25 or less and show no evidence of significant progressive combustion when the test is continued for an additional 20 -minute period. Additionally, the flame front shall not progress more than 101/2 feet (3200 mm) beyond the centerline of the burners at any time during the test. 2303.2.1 Pressure process. For wood products impregnated with chemicals by a pressure process, the process shall be performed in closed vessels under pressures not less than 50 pounds per square inch gauge (psig) (345 kPa). January 25, 2018 Dan Carlson, Kittitas County Community Development Director 411 N Ruby St Ellensburg, WA 98926 The Kittitas County Fire Chief s Association has discussed the practice of allowing the use of intumescent paints and stains as alternatives to fire resistive products such as cement board siding (Hardieplank), stucco, brick, brick veneer, stone, stone veneer, steel, aluminum and corrugated metal. We collectively ask that this practice be discontinued for public safety reasons. Section 104.9 of the 2015 International Fire Code permits alternative materials and methods provided, "the material, method or work offered is, for the purpose intended, at least the equivalent of that prescribed in this code in quality, strength, effectiveness, rrre resistance, durability and safety." Intumescent finishes are not equivalent to inherently fire resistant products: Fire resistant siding retains its fire resistive rating for the life of the siding. Intumescent products lose their fire resistive properties between 2 to 5 years due to degradation from ultraviolet radiation, precipitation, pollution and temperature variations. Verification of the installation of inherently fire resistive products is easy to verify. Intumescent finishes look like their non -fire resistive counterparts making verification nearly impossible. Once a certificate of occupancy is issued, there are no follow up inspections. Re- application of the correct product, to manufacturer's specifications and on a time schedule that matches the UV damage timeline (which would be different for every structure) is necessary to meet the original intent of the code. Intumescent finishes should not be permitted as an equivalent material for inherently fire resistive products and this exemption should be removed from the Kittitas County amendments to the Wildland Urban Interface Code. Thank you for your time and consideration in this matter. This letter conveys a unanimous request from all members. Additionally, the following agencies are specifically asking for intumescent finishes to be removed as alternative to non-combustible siding in their respective fire response jurisdictions: 101 z KCFQ I — Braf don Schmidt �Sfeve Jensen' KCFp 3 Tim Milbert — KCFD 6 Sinclao' — KVFR J y Wiseman — KCFD 7/KCFD 51 William Rose — KCFD 4 CC - Mike Flory — Kittitas County Community Development Laura Osiadacz — Kittitas County Commissioner Obie O'Brien — Kittitas County Commissioner Paul Jewell — Kittitas County Commissioner r--_. r 9 -c= r 9