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1021 Chapter 3 <br /> Ji Material Properties <br /> Appendix C <br /> Allowable Compressive Stress <br /> Table C.1 lists allowable compressive stress values for 73°F(23°C).Values for <br /> allowable compressive stress for other temperatures may be determined by <br /> application of the same multipliers that are used for pipe pressure rating(See <br /> Table A.2). <br /> TABLE C.1 <br /> Allowable Compressive Stress for 73°F(23°C) <br /> Pe Pipe Material Designation Code") <br /> ��yy�,,����y � <br /> a e."lei. .3,s+..' f4:F_ <br /> PE 3608 <br /> * z <br /> PE 2708 <br /> PE 3710 , <br /> psi MPa psi MPa psi MPa <br /> : aaa <br /> (1) See Chapter 5 for an explanation of the PE Pipe Material Designation Code. <br /> Appendix D <br /> Poisson's Ratio <br /> Poisson's Ratio for ambient temperature for all PE pipe materials is approximately <br /> 0.45. <br /> This 0.45 value applies both to the condition of tension and compression.While this <br /> value increases with temperature,and vice versa,the effect is relatively small over the <br /> range of typical working temperatures. <br />