Ill. Admin. Code tit. 77, § 890.1410 - Materials
a) All piping and
fittings used in the vent system shall conform to requirements of Appendix A,
Table A, "Approved Building Drainage/Vent Pipe" and "Approved Standards for
Fittings".
b) A system carrying
corrosive waste shall be of approved materials as in Appendix A, Table A,
"Approved Building Drainage/Vent Pipe". Vent piping shall be of the same
material as the waste piping. (See Section
890.1310(b).)
Notes
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