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International Residential Code
Code Compare
Chapter 1
Scope and Administration
Chapter 2
Definitions
Chapter 3
Building Planning
Chapter 4
Foundations
Chapter 5
Floors
Chapter 6
Wall Construction
Chapter 7
Wall Covering
Chapter 8
Roof-Ceiling Construction
Chapter 9
Roof Assemblies
Chapter 10
Chimneys and Fireplaces
Chapter 11
Building Thermal Envelope and Insulation
Chapter 12
Interior Finishes
Chapter 13
Energy Efficiency
Chapter 14
Exterior Walls
Chapter 15
Roof Assemblies and Rooftop Structures
Chapter 16
Structural Design
Chapter 17
Foundations and Soils
Chapter 18
Concrete
Chapter 19
Steel
Chapter 20
Wood
Chapter 21
Masonry
Chapter 22
Glass and Glazing
Chapter 23
Gypsum Board and Plaster
Chapter 24
Plastics
Chapter 25
Electrical
Chapter 26
Mechanical Systems
Chapter 27
Plumbing Systems
Chapter 28
Elevators
Chapter 29
Encroachments Into Public Right-of-Way
Chapter 30
Safeguards During Construction
Chapter 31
Means of Egress
Chapter 32
Accessibility
Chapter 33
Interior Environment
Chapter 34
Exterior Walls
Chapter 35
Reserved for Future Use
Chapter 36
Referenced Standards
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Home / Code Library / washington / International Residential Code 2021 / Chapter 2
Adopts With Amendments
Chapter 2

Definitions

International Residential Code 2021

[F] 201.1.1 IRC Definitions General

Section 201.1.1 — IRC Definitions General. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 201.2.1 IRC Definitions General

Section 201.2.1 — IRC Definitions General. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.1.1 Dwelling Unit Definition

Section 202.1.1Dwelling Unit Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.1.2 Story Definition

Section 202.1.2Story Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.1.3 Habitable Space Definition

Section 202.1.3Habitable Space Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.1.4 Definitions - Habitable Space

Section 202.1.4 — Definitions - Habitable Space. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.1.5 Definitions - Townhouse

Section 202.1.5 — Definitions - Townhouse. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.A Accessible

Section 202.A — Accessible. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.B Basement

Section 202.B — Basement. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.C Crawl Space

Section 202.C — Crawl Space. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.D Dwelling Unit

Section 202.D — Dwelling Unit. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.E Grade Plane

Section 202.E — Grade Plane. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.F Guard

Section 202.F — Guard. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.G Habitable Space

Section 202.G — Habitable Space. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.H Listed

Section 202.H — Listed. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.I Live Load

Section 202.I — Live Load. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.J Story Above Grade Plane

Section 202.J — Story Above Grade Plane. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.K Townhouse

Section 202.K — Townhouse. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] 202.L Vapor Retarder

Section 202.L — Vapor Retarder. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R201.1 General Definitions Scope

Section R201.1 — General Definitions Scope. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R201.2 Interchangeability

Section R201.2 — Interchangeability. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R201.3 Terms Defined in Other Codes

Section R201.3 — Terms Defined in Other Codes. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R201.4 Terms Not Defined

Section R201.4 — Terms Not Defined. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.1 General Definitions

Section R202.1 — General Definitions. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.1.1 Definitions General

Section R202.1.1 — Definitions General. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.1.2 Addition Definition

Section R202.1.2 — Addition Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.1.3 Air Barrier Definition

Section R202.1.3 — Air Barrier Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.1.4 Alteration Definition

Section R202.1.4 — Alteration Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.1.5 Approved Definition

Section R202.1.5 — Approved Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.10 Dwelling

Section R202.10 — Dwelling. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.11 Definitions - Diaphragm

Section R202.11 — Definitions - Diaphragm. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.12 Grade Plane

Section R202.12 — Grade Plane. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.13 Guard

Section R202.13 — Guard. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.14 Habitable Space

Section R202.14 — Habitable Space. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.15 Definitions - Vapor Retarder

Section R202.15 — Definitions - Vapor Retarder. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.16 Live Load

Section R202.16 — Live Load. This section covers structural design and loading requirements. Specific values and calculation methods are defined in the official code text. Refer to the official code text for complete requirements.
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[F] R202.17 Mezzanine

Section R202.17 — Mezzanine. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.18 Story

Section R202.18 — Story. This section covers allowable building height, area, and number of stories based on construction type and occupancy. Refer to the official code text for complete requirements.
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[F] R202.19 Townhouse

Section R202.19 — Townhouse. This section establishes occupancy classification and use requirements that determine applicable building code provisions. Refer to the official code text for complete requirements.
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[F] R202.2 General Definitions - Addition

Section R202.2 — General Definitions - Addition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.2.1 Dwelling Unit Definition

Section R202.2.1 — Dwelling Unit Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.3 General Definitions - Alteration

Section R202.3 — General Definitions - Alteration. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.3.1 Habitable Space Definition

Section R202.3.1 — Habitable Space Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.4 General Definitions H-L

Section R202.4 — General Definitions H-L. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.4.1 Story Above Grade Plane Definition

Section R202.4.1 — Story Above Grade Plane Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.5 Dwelling Unit

Section R202.5 — Dwelling Unit. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.55 Story Above Grade Plane Definition

Section R202.55 — Story Above Grade Plane Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.56 Structural Insulated Panel Definition

Section R202.56 — Structural Insulated Panel Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.57 Townhouse Definition

Section R202.57 — Townhouse Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.6 General Definitions - Basement

Section R202.6 — General Definitions - Basement. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.7 General Definitions - Building

Section R202.7 — General Definitions - Building. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.8 Crawl Space

Section R202.8 — Crawl Space. This section establishes specific code requirements. Refer to the official code text for detailed provisions, exceptions, and referenced standards. Refer to the official code text for complete requirements.
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[F] R202.9 Dead Load

Section R202.9 — Dead Load. This section covers structural design and loading requirements. Specific values and calculation methods are defined in the official code text. Refer to the official code text for complete requirements.
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[F] R202.A1 Accessible - Definition IRC

Section R202.A1 — Accessible - Definition IRC. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.B1 Basement - Definition

Section R202.B1 — Basement - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.C1 Crawl Space - Definition

Section R202.C1 — Crawl Space - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.D1 Dwelling Unit - Definition

Section R202.D1 — Dwelling Unit - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.E1 Exterior Wall - Definition

Section R202.E1 — Exterior Wall - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.F1 Fire Separation Distance - Definition

Section R202.F1 — Fire Separation Distance - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.G1 Grade Plane - Definition IRC

Section R202.G1 — Grade Plane - Definition IRC. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.H1 Habitable Space - Definition

Section R202.H1 — Habitable Space - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.L1 Light-Frame Construction - Definition

Section R202.L1 — Light-Frame Construction - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.S1 Story Above Grade Plane - Definition

Section R202.S1 — Story Above Grade Plane - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.T1 Townhouse - Definition

Section R202.T1 — Townhouse - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.V1 Vapor Retarder - Definition

Section R202.V1 — Vapor Retarder - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.W1 Weather-Exposed Surfaces - Definition

Section R202.W1 — Weather-Exposed Surfaces - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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[F] R202.W2 Water-Resistive Barrier - Definition

Section R202.W2 — Water-Resistive Barrier - Definition. This section provides definitions relevant to the code. Defined terms have specific meanings that affect how requirements are applied throughout the code. Refer to the official code text for complete requirements.
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Code sections are sourced from the International Code Council (ICC) and NFPA. Refer to ICC Digital Codes or NFPA for the authoritative source documents.