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loa I ehapter s <br />I <br />Material Properties <br />Appendix e <br />Allowable eompressive Stress <br />TABLE C.5. <br />Allowable Compressive Stress lor 73'F (23"C) <br />Appendix D <br />Foisson's Ratio <br />Poisson's Ratio for ambient temperature for all pE pipe niaterials is app:rr <br />0.45. <br />This 0.45 value applies both to the condition of tension ar{d compression. <br />rralue increases with temperafure, and vice versa, the effebt is relatively <br />ran€ie of typical working temperatures. <br />tely <br />hile this <br />ll over the <br />Pe Fipe Material Deslgnation Code 0) <br />See Chapter 5 for an explanaiion of the PE Pipe Material Dosignation