83 Ill. Adm. Code 605.331
Retirement Unit Account 331 Transmission Mains and Distribution Mains
Section 605
Section 605.331 Retirement
Unit Account 331 Transmission Mains and Distribution Mains
a) Items
Air chamber
Bridge or culvert
Canal
Gate
Gate house
Gauge or recorder
Main, any two or more continuous standard lengths of pipe, including
fittings
Manhole or vault
Main line meter
Meter house
Pressure regulator
Surge tank
Tunnel
Valve
b) "Mains" shall include pipe, fittings, specials,
joints, pavement cut and replaced, tunnelling, excavation and backfill, shoring
and bracing and protection of openings (also includes permits, etc.)