Okla. Admin. Code § 158:30-1-4
The standards of installation are the provisions of the plumbing codes - the International Plumbing Code, the International Fuel Gas Code and the plumbing portion of the International Residential Code, as revised and adopted by the OUBCC pursuant to the Oklahoma Uniform Building Code Commission Act: the provisions of the plumbing codes for the unlimited journeyman plumber and unlimited plumbing contractor are the International Plumbing Code, the International Fuel Gas Code and the plumbing portion of the International Residential Code, as revised and adopted by the Uniform Building Code Commission; and the provisions of the plumbing codes for the residential journeyman plumber and residential plumbing contractor are the plumbing portions of the International Residential Code, as revised and adopted by the Uniform Building Code Commission.
Okla. Admin. Code § 158:30-1-4
Added at 19 Ok Reg 721, eff 1-22-02 (emergency); Added at 19 Ok Reg 1264, eff 5-28-02 ; Amended at 21 Ok Reg 491, eff 11-14-03 (emergency); Amended at 21 Ok Reg 1187, eff 5-27-04 ; Amended at 23 Ok Reg 1213, eff 5-25-06 ; Amended at 26 Ok Reg 2451, eff 7-11-09 ; Amended at 30 Ok Reg 1533, eff 7-11-13