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Report No.15300-100595 Supplement page 2 of 6 <br /> 3M Commercial Graphics Division January 4,1999 <br /> II. PURPOSE <br /> The ASTM E84-95(25 foot tunnel)test method is intended to compare the surface <br /> flame spread and smoke developed measurements to those obtained from tests of <br /> mineral fiber cement board and select grade red oak flooring. The test specimen <br /> surface (18 inches wide and 24 feet long)is exposed to a flaming fire exposure <br /> during the 10 minute test duration,while flame spread over its surface and den- <br /> sity of the resulting smoke are measured and recorded. Test results are <br /> presented as the computed comparisons to the standard calibration materials. <br /> The furnace is considered under calibration when a 10 minute test of red oak <br /> decking will pass flame out the end of the tunnel in five minutes,30 seconds, plus <br /> or minus 15 seconds. Mineral fiber cement board forms the zero point,while the <br /> red oak flooring flame spread and smoke developed ratings are set as 100. <br /> III. DESCRIPTION OF TEST SPECIMENS <br /> Specimen Identification: 3MTM ScotchcalTM Translucent Film <br /> 3630-33 <br /> 41110 Date Received: 10/07/96 <br /> Date Prepared: October?,1996 <br /> Conditioning(73°F &50%r.b): 3 days <br /> Specimen Width (in): 24 <br /> Specimen Length(ft): 24 <br /> Specimen Thickness: 0.03 in. <br /> Material Weight: N/A ozJsq. yd. <br /> Total Specimen Weight: 114.04 lb. <br /> Adhesive or coating application rate: N/A <br /> Mounting Method: <br /> The specimen was self-adhered to GRO board and placed directly on the tunnel <br /> ledges. <br /> Specimen Description: <br /> This test specimen is described by the client as 3M71'Scotchcalra'Translucent <br /> Film 3630-33—a translucent 2 mil vinyl film with a pressure sensitive adhesive. <br /> 4.01111*OOX,rTel' <br />