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DATE: July 23, 1993 <br /> PROJECT NO: 4140 92-2757 PAGE: 3 <br /> SAMPLE IDENTIFICATION: <br /> EPS thermal insulation molded to meet the requirements of ASTM C578, Type I and Type II classification, <br /> were submitted to our laboratory by Diversifoam Products, Rockford, Minnesota <br /> in August <br /> sheets each of 89 for ere <br /> Society of the Plastics Industry EPS Block Molders p Two 4' by 9' <br /> identified as follows: <br /> Type I: 2.73 inches thick, white in color <br /> Type 1I: 2.52 inches thick, white with green beads <br /> le thicknesses were designed to provide reference thermal resistance values of approximately 10 <br /> The sam p <br /> h-fe-'F/Btu. The tested R-values and densities were as follows: <br /> T_Xl� <br /> Aver Density lb/ft' Avera e R-Value h-fF-'F/Btu <br /> 1.01 10.2 <br /> 1 1.46 10.6 <br /> II <br /> OBSERVATIONS• ' <br /> The general condition of test samples was documented upon removal from the foundation each year: <br /> First <br /> Year: Scattered minor surface cracks and indentations were obser ed brushing). amount <br /> significant <br /> ficant <br /> impregnation in the surface was apparent (that which could nopbarent deterioration of the EPS;boards due <br /> distortion, shrinkage or swelling ha ma was <br /> haveevident. <br /> occurred There was no a p <br /> to any freeze-thaw cycling y <br /> Year: Scattered minor surface cracks and indentations were observed. A greater amount of soil <br /> Second y g No significant <br /> impregnation in the surface was apparent (that which could not be removed b brushing). g <br /> ion shrinkage or swelling was evident. There was no apparent deterioration of the EPS boards due <br /> distort , <br /> to any freeze-thaw cycling that may have occurred. <br /> Year: Apart from some slight damage during the removal, the two <br /> na ion in the surface s were intact. was sdl <br /> Third Yea psoil <br /> minor surface cracks and indentations were observed. Some significant distortion, shrinkage or swelling <br /> apparent (that which could not be removed by brushing). No sig <br /> was evident. There was no apparent deterioration of the EPS boards due to any freeze-thaw cycling that <br /> may have occurred. <br /> Refer to Appendix C for photographs of the samples. <br /> CORPORATION REPORTS ARE SUBMITTED AS THE CONFIDENTIAL PROPERTY OF CL:E%T <br /> AS A MUTUAL PROTECTION TO CLIE»TS.THE PUBLIC AND OURSELVES All TWIN CITY TESTING <br /> A»0 AUTMCRIZATION FOR PUBLICATION OF STATEMENTS.CONCLUSIONS OR EXTRACTIONS FROM OR REGARDING OUR REPORTS IS RESERVED PENDING OUR PRIOR'N R'^Tvv�a?Pa0\r� <br />