77 Ill. Adm. Code 890.1050
Receptors
Section 890
Section 890.1050Â Receptors
a)        Installation. Receptors serving indirect waste pipes shall be
trapped and vented and shall not be installed in any concealed, inaccessible or
unventilated space, and shall be sized to prevent overflow.
b)        Strainers and Baskets. A receptor shall be equipped with
either a readily removable basket over which the indirect waste pipe shall
discharge or the indirect waste receptor shall be equipped with a strainer. Â The
basket or receptor shall be constructed of approved material for the waste that
will discharge into it.
c)        Splashing. All plumbing receptors receiving the discharge of
indirect waste pipes shall be of such design and capacity as to prevent
splashing or flooding under normal conditions. No plumbing fixtures with
potable water connected to them, except service sinks, shall be used to receive
the discharge of an indirect clear water waste pipe.