77 Ill. Adm. Code 890.1760
Sinks
Section 890
Section 890.1760 Sinks
a) All sinks for food preparation or cleansing of utensils used
to prepare food shall be of stainless steel (Type 304) construction, including
framework and reinforcing.
b) All welds shall be ground smooth, and exterior surfaces
polished.
c) All sinks shall be provided with waste outlets at least one
and one-half (1 ½) inches in diameter. A crossbar, strainer, or other means
shall be provided to restrict the clear opening of the waste outlet. No
kitchen sink basket shall be less than three and one-half (3 ½) inches in
diameter.
d) Waste lines and water supply lines shall conform with Sections
890.130 through 890.1600.