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Alternate Materials) and/or Method(s) Application <br /> Marion County Public Works <br /> 4111/1 Mar/on 5155 Silverton Rd NE <br /> county 5155 <br /> OR 97305 <br /> ORE G O N <br /> Phone: (503) 588-5147 Fax: (503) 588-7948 E-mail: Building(dco.marion.or.us <br /> DESCRIBE WHY, HOW, ETC., THE PROPOSED ALTERNATE IS EQUIVALENT AND MEETS THE <br /> INTENT OF THE CODE IN TERMS OF "STRENGTH, EFFECTIVENESS,FIRE RESISTANCE, <br /> DURABILITY, HEALTH , AND SAFETY": <br /> In order to provide Fire Life Safety for the additional canopy area we propose building the canopy with a 2-hr rated assembly,which is equal <br /> to the rating of a fire wall if the area was separated from the existing building by a new fire wall. The assembly proposed is the <br /> Gypsum Association File No.RC2750 with 3 layers of Firecode C gypsum Board on the underside of the framing followed by <br /> a layer of 7/8"metal furring channels perpendicular to the framing and a fourth layer of Fire3code C gypsum board for the finished soffit. <br /> The Assembly calls for a 3/4"T&G plywood deck,we are proposing is 5/8"square edge deck with 1/4"DensDeck gypsum roof board and staggered seams. <br /> The canopy fascia will be covered with non-combustable Hardy Trim boards and sheet metal flashing. <br /> The 3"steel pipe columns that support the canopy will be painted with a 2-hr rated intumescent paint meeting ASTM E-119. <br /> LIST SUBSTANTIATING EVIDENCE(REPORTS, STUDIES,ETC)—ATTACH COPIES OF DOCUMENTATION <br /> 2-hr Fire Rated Canopy Section Details <br /> Structural Calculations Revised Canopy Weight Take-off <br /> GA File No.RC 2750,Product Data Sheet for FireGuard E-84. <br /> t I hereby request approval to use an alternate material(s)and/or method(s)from that required by code as described above. <br /> ` Date: 8/29/2022 <br /> OFFICE USE ONLY <br /> ❑ Approved One time approval. Any additional sq ft added to the existing <br /> /Approved with conditions building will require the installation of fire sprinkler system or fire <br /> I I Denied wall to be within compliance of allowable area. Preexisting non <br /> conforming exceed allowable area. <br /> Signed: Chris Trussell Date: 9-1-22 <br /> Page 2 of 2 <br /> G\FORMS\BLDG\B-37Ahemate Material or Method ReyuesLdoc <br />