Ill. Admin. Code tit. 77, § 890.730 - Floor Drains/Trench Drains
a)
Trap and Strainer. Floor drains shall be trapped and have a minimum water seal
of 2 inches and shall be provided with a removable strainer. The open area of
the strainer shall be at least 2/3 of the area of the drain line to which it
connects. (See Appendix F.Illustration F.)
b) Trench drains for gas or oil discharges
shall be constructed of cast iron, steel, polymer concrete, fiberglass,
high-density polyethylene (HDPE), or Schedule 40 PVC material. Continuous
trench drains for gas or oil discharges shall have a trapped and vented opening
no less than every 40 lineal feet. Intermittent trench drains shall be treated
as individual floor drains and shall meet the trap and venting requirements for
floor drains.
Notes
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