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Alternate Material(s) and/or Method(s)Application <br /> ON Marion County Public Works <br /> ,eh,;,,,, 5155 Silverton Rd NE <br /> c cunt,/ Salem OR 97305 <br /> OREGON <br /> Phone:(503)588-5147 Fax:(503)588-7948 E-mail:Building@co marionor.uti _ <br /> pEsc P 9 3g,P119 ® HD' ' TiHPU. <br /> 6'D t+ OnLs� ,gtAThe proposed window fire sprinklers will be Installed on both sides of the glass,and are designed to flood the glass surface with water In the <br /> event of a fire,thus keeping the glass cool enough to avoid breaking. The system requires the use of safety glazing,and we are specifying <br /> laminated glass to help keep the surface Intact even if cracked or hit by a fire hose spray. Fire rated frames are also required,which we will <br /> comply with by using 90-minute rated hollow steel frames. No horizontal mullions are permitted. The sprinkler heads themselves have been <br /> tested and approved by Ut to providelire protection of the glazing for up to 2 hours,and the system has been used in numerous buildings <br /> In the area,Including McNary High School. <br /> mtIST.$ 1S ANTTATIIfIG EVlii*M (R$P,bRTS;STurak.,ETCNAPTACH;COPIES OEJ)OCUMENfATION <br /> Tyco Model WS Specific Application Window SpMlkera Horizontal and Pendent Vertical SlJewell SA Mentor data sheet la attached. <br /> I hereby req alternate material(s)and/or method(s)from that required by code as described above. <br /> Signed: ��c 4:- / Date: 2 February, 2019 wi <br /> p Approved / <br /> 0 Approved with conditions <br /> ❑ Denied Signed: � /,i -��Date: / - 23- I , <br /> Page 2 of 2 J <br /> G:�FOAMS�BI.DGtH-3'!AI[avete Material mMdhod]twryeatdoc <br />