# WAC 51-52-0101: WAC 51-52-0101. Section 101 — General

> Washington · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0101

## Section

- **Citation:** WAC 51-52-0101
- **Heading:** WAC 51-52-0101. Section 101 — General
- **Jurisdiction:** Washington
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Washington Administrative Code / Title 51 / Chapter 51-52 / Section 51-52-0101

## Text

101.2 Scope. This code shall regulate the design, installation, maintenance, alteration and inspection of mechanical systems that are permanently installed and utilized to provide control of environmental conditions and related processes within buildings. This code shall also regulate those mechanical systems, system components, equipment and appliances specifically addressed herein. The installation of fuel gas distribution piping and equipment, fuel gas-fired appliances and fuel gas-fired appliance venting systems shall be regulated by the International Fuel Gas Code . References in this code to Group R shall include Group I-1, Condition 2 assisted living facilities licensed by Washington state under chapter 388-78A WAC and Group I-1, Condition 2 residential treatment facilities licensed by Washington state under chapter 246-337 WAC.
EXCEPTIONS:
1. Detached one- and two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories high with separate means of egress and their accessory structures shall comply with the International Residential Code .
2. The standards for liquefied petroleum gas installations shall be the 2020 Edition of NFPA 58 (Liquefied Petroleum Gas Code) and the 2021 Edition of ANSI Z223.1/NFPA 54 (National Fuel Gas Code).

## Nearby sections

- [WAC 51-52-001 WAC 51-52-001. Authority](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_001.md)
- [WAC 51-52-002 WAC 51-52-002. Purpose](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_002.md)
- [WAC 51-52-003 WAC 51-52-003. International Mechanical Code](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_003.md)
- [WAC 51-52-004 WAC 51-52-004. Conflict between International Mechanical Code and State Energy Code chapter 51-11C WAC](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_004.md)
- [WAC 51-52-007 WAC 51-52-007. Exceptions](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_007.md)
- [WAC 51-52-008 WAC 51-52-008. Implementation](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_008.md)
- [WAC 51-52-0101 WAC 51-52-0101. Section 101 — General](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0101.md)
- [WAC 51-52-0113 WAC 51-52-0113. Section 113 — Stop work order](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0113.md)
- [WAC 51-52-0202 WAC 51-52-0202. Section 202 — General definitions](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0202.md)
- [WAC 51-52-0306 WAC 51-52-0306. Section 306 — Access and service space](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0306.md)
- [WAC 51-52-0307 WAC 51-52-0307. Section 307 — Condensate disposal](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0307.md)
- [WAC 51-52-0401 WAC 51-52-0401. Section 401 — General](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0401.md)
- [WAC 51-52-0403 WAC 51-52-0403. Section 403 — Mechanical ventilation](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0403.md)
- [WAC 51-52-0404 WAC 51-52-0404. Section 404—Enclosed parking garages and automobile repair facilities](https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0404.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_WA_ADC_51_52_0101. Check the current official text before relying on it. Not legal advice.