Ill. Admin. Code tit. 77, § 330.3030
Specifications shall supplement the drawings to fully describe, except where fully indicated and described on the drawings, the materials, workmanship, the kind, sizes, capacities, finishes, and other characteristics of all materials, products, articles, and devices and shall include:
(Source: Amended at 13 Ill. Reg. 6562, effective April 17, 1989)