| IBC — International Building Code | 2018 IBC, SECOND PRINTING (JANUARY 2019), WITH A DATED ERRATA CUT-OFF OF JULY 31, 2019 — the International Building Code, 2018 Edition, adopted by reference by the Oklahoma Uniform Building Code Commission at OAC 748:20-2-1. NOT 2021 AND NOT 2024; neither is adopted in Oklahoma. TWO-AXIS PIN, SAME SHAPE AS THE OK IFC, IMC AND IPC ROWS — BUT A FOURTH, DISTINCT PRINTING MONTH: IBC = SECOND PRINTING JANUARY 2019, IPC = SECOND PRINTING FEBRUARY 2018, IFC = SECOND PRINTING APRIL 2018, IMC = SECOND PRINTING OCTOBER 2018. FOUR CODES, FOUR DIFFERENT PRINTINGS, ONE STATE, ONE EFFECTIVE DATE. A VIEWER SERVING A GENERIC "2018 IBC" IS ONE PRINTING AWAY FROM TEXT THAT IS NOT OKLAHOMA LAW. Prior value was the bare string "2018", verified_at set since 2026-08-07, citation 28 characters, sourced to the generic OUBCC index page. | OAC 748:20-2-1 (Oklahoma Uniform Building Code Commission, Chapter 20 Subchapter 2, International Building Code; permanent rule document "2021 09 14 IBC 2018 Permanent Rule"). READ FIRST-HAND 2026-09-18 AND TRANSCRIBED EXACTLY AS PRINTED: "The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the International Building Code(R), 2018 Edition (IBC(R) 2018), second printing (January 2019) as amended and modified in this subchapter as the statewide minimum code for commercial building construction in the State of Oklahoma pursuant to 59 O.S. 1000.23." STATUTORY AUTHORITY AS PRINTED: "59 O.S 59 s. 1000.23". ERRATA CUT-OFF, OAC 748:20-2-1(d), TRANSCRIBED EXACTLY AS PRINTED: "The OUBCC has pulled, from the ICC website, published errata to the second printing of the IBC(R) through July 31, 2019. Any errata published after that date has not been reviewed or incorporated into these rules." APPENDICES, OAC 748:20-2-3, TRANSCRIBED EXACTLY AS PRINTED: "None of the appendices of the IBC(R) 2018 have been adopted by the OUBCC for inclusion in the statewide minimum code for commercial building construction in the State of Oklahoma." Appendices A through N are each expressly stated not to be adopted as the minimum code, local jurisdictions remaining free to adopt them. SCOPE WORD TO NOTE: this rule is the minimum code for COMMERCIAL building construction; residential one- and two-family and townhouse work runs on the separate IRC subchapter (OAC 748:20-6, row 314926fa). · source ↗ |
| IEBC — International Existing Building Code | 2018 | OAC 748:20-8 · source ↗ |
| IECC — International Energy Conservation Code | 2006 | COMMERCIAL: OAC 748:20-2-40(3) - OUBCC amended IBC 2018 Chapter 35 Referenced Standards to read "IECC-06 International Energy Conservation Code"; IBC 2018 Chapter 13 (Energy Efficiency) adopted unmodified (748:20-2-18 RESERVED), eff. 9/14/2021. RESIDENTIAL: Oklahoma adopts no IECC by name - OAC 748:20-6-16 adopts IRC 2018 Chapter 11 (Energy Efficiency), eff. 9/14/2022. · source ↗ |
| IFC — | 2018 IFC, SECOND PRINTING (APRIL 2018), WITH A DATED ERRATA CUT-OFF OF JULY 31, 2019 — the International Fire Code, 2018 Edition, adopted by reference by the Oklahoma Uniform Building Code Commission at OAC 748:20-4. ADOPTING WORDS VERBATIM: "The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the International Fire Code(R), 2018 Edition (IFC(R) 2018), second printing (April 2018) as amended and modified in this subchapter as the statewide minimum code for residential and commercial fire prevention and fire protection systems within the State of Oklahoma pursuant to 59 O.S. s.1000.23." NOT 2021 AND NOT 2024 — neither is adopted in Oklahoma. THE EDITION IS PINNED ON TWO AXES: the SECOND PRINTING (April 2018) — note this is a DIFFERENT PRINTING MONTH from Oklahoma's IPC, which is the second printing of FEBRUARY 2018 — and ICC errata reviewed and incorporated only THROUGH JULY 31, 2019, with later errata expressly not incorporated. An otherwise-accurate 2018 IFC text carrying post-July-2019 errata, or a first printing, IS NOT OKLAHOMA LAW. Prior value was the bare string "2018", unverified, sourced to the generic OUBCC index page. | OAC 748:20-4-1 through 748:20-4-86 (Subchapter 4, International Fire Code), Oklahoma Uniform Building Code Commission, "2021 09 14 Permanent Rule IFC 2018"; authority 59 O.S. s.1000.23; effective 2021-09-14, 38 Ok Reg 2611. Chain: 2009 IFC eff. 2012-11-01, superseded 2015-11-01; 2015 IFC eff. 2015-11-01, superseded 2021-09-14; 2018 IFC eff. 2021-09-14, NOT SUPERSEDED. · source ↗ |
| IFGC — International Fuel Gas Code | 2018 | OAC 748:20-12 · source ↗ |
| IMC — International Mechanical Code | 2018 IMC, SECOND PRINTING (OCTOBER 2018), WITH A DATED ERRATA CUT-OFF OF JULY 31, 2019 — the International Mechanical Code, 2018 Edition, adopted by reference by the Oklahoma Uniform Building Code Commission at OAC 748:20-14. ADOPTING WORDS VERBATIM: "The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the International Mechanical Code(R), 2018 Edition (IMC(R) 2018), second printing (October, 2018), as amended and modified in this subchapter as the statewide minimum code for commercial mechanical construction in the State of Oklahoma pursuant to 59 O.S. 1000.23." NOT 2021 AND NOT 2024 — neither is adopted in Oklahoma. TWO-AXIS PIN: the SECOND PRINTING OF OCTOBER 2018, and ICC errata incorporated only THROUGH JULY 31, 2019, verbatim: "The OUBCC has pulled from the ICC website, published errata to the second printing of the IMC(R) through July 31, 2019. Any errata published after that date has not been reviewed or incorporated into these rules." An otherwise-accurate 2018 IMC text carrying post-July-2019 errata, or a different printing, IS NOT OKLAHOMA LAW. Prior value was the bare string "2018", unverified, sourced to the generic OUBCC index page. | OAC 748:20-14-1 through 748:20-14-20 (Subchapter 14, International Mechanical Code), Oklahoma Uniform Building Code Commission, "2021 09 14 IMC 2018 Permanent Rule"; authority 59 O.S. s.1000.23; effective 2021-09-14. Chain from the OUBCC's own IMC adoptions page: 2009 IMC eff. 2012-11-01, superseded 2015-11-01; 2015 IMC eff. 2015-11-01, superseded 2021-09-14; 2018 IMC eff. 2021-09-14, NOT SUPERSEDED. · source ↗ |
| IPC — International Plumbing Code | 2018 IPC, SECOND PRINTING (FEBRUARY 2018) | OAC 748:20-16-1 (Oklahoma Uniform Building Code Commission, Chapter 20 Subchapter 16, "2021 09 14 IPC 2018 Permanent Rule"). Verbatim: "The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the International Plumbing Code(R), 2018 Edition (IPC(R) 2018), second printing (February 2018), as amended and modified in this subchapter as the statewide minimum code for commercial plumbing construction in the State of Oklahoma pursuant to 59 O.S. 1000.23." Statutory authority: 59 O.S. s.1000.23. Effective 2021-09-14, superseding the 2015 IPC adoption of 2018-09-17. · source ↗ |
| IRC — International Residential Code | 2018 IRC — the International Residential Code, 2018 Edition, adopted by the Oklahoma Uniform Building Code Commission at OAC 748:20-6-1 as the statewide minimum code for one- and two-family dwellings and townhouses, effective 2022-09-14. NOT 2021 AND NOT 2024. **NO PRINTING IS PINNED AND NO ERRATA SENTENCE APPEARS IN THIS RULE — UNLIKE THE OKLAHOMA IBC, IFC, IMC AND IPC RULES, WHICH ALL PIN A SPECIFIC SECOND PRINTING AND AN ERRATA CUT-OFF OF JULY 31, 2019. THE IRC RULE IS A YEAR LATER THAN THAT PACKAGE AND DROPS BOTH CONVENTIONS. DO NOT CARRY A PRINTING PIN ONTO THIS ROW BY ANALOGY.** | OAC 748:20-6-1 (Oklahoma Uniform Building Code Commission, Chapter 20 Subchapter 6, International Residential Code; permanent rule document "2022 09 14 IRC 2018 Permanent Rule"). READ FIRST-HAND 2026-09-18 AND TRANSCRIBED EXACTLY AS PRINTED: "The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the International Residential Code(R), 2018 Edition (IRC(R) 2018) as amended and modified in this subchapter to be the statewide minimum code for residential construction within the State of Oklahoma for one- and two-family dwellings and townhouses pursuant to 59 O.S. s. 1000.23." Statutory authority: 59 O.S. s. 1000.23. Effective 2022-09-14. NO ERRATA SENTENCE APPEARS IN THIS RULE — CHECKED, NOT ASSUMED. Residential energy provisions sit at OAC 748:20-6-16 (IRC 2018 Chapter 11), recorded on the OK IECC row aad14d2c. · source ↗ |
| NEC — National Electrical Code (NFPA 70) | 2023 NEC (NFPA 70, 2023 Edition), WITH NO PRINTING PIN AND WITH ALL ERRATA AND TIAs EXPRESSLY EXCLUDED — adopted by the Oklahoma Uniform Building Code Commission at OAC 748:20-10-1, effective 2024-09-14, as the statewide minimum code for COMMERCIAL electrical construction. NOT 2026 and not 2020; the 2020 NEC was superseded on 2024-09-14. | OAC 748:20-10-1 (Oklahoma Uniform Building Code Commission, Chapter 20 Subchapter 10, National Electrical Code; permanent rule document "NEC 2023 Permanent Rule"). READ FIRST-HAND 2026-09-18 AND TRANSCRIBED EXACTLY AS PRINTED: "748:20-10-1. The Oklahoma Uniform Building Code Commission (the 'OUBCC') hereby adopts the National Electrical Code(R), 2023 Edition - NFPA 70(R) (NEC(R) 2023), as amended and modified in this subchapter as the statewide minimum code for commercial electrical construction in the State of Oklahoma pursuant to 59 O.S. s. 1000.23." Statutory authority: 59 O.S. s. 1000.23. Effective date printed in the rule: September 14, 2024. ERRATA POSTURE, TRANSCRIBED EXACTLY AS PRINTED AND IT IS THE OPPOSITE OF OKLAHOMA'S ICC RULES: "The OUBCC has not pulled, reviewed or incorporated into these rules any published errata and Temporary Interim Amendments (TIA's) to the NEC(R) 2023 from the National Fire Protection Association (NFPA) website." ADOPTION CHAIN FROM THE OUBCC'S OWN NEC ADOPTIONS PAGE, READ THIS RUN: 2011 NEC eff. 2012-11-01, superseded 2015-11-01; 2014 NEC eff. 2015-11-01, superseded 2021-09-14; 2017 NEC eff. 2021-09-14, superseded 2022-09-14; 2020 NEC eff. 2022-09-14, superseded 2024-09-14; 2023 NEC eff. 2024-09-14, NOT SUPERSEDED. · source ↗ |