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NFPA 501: Standard on Manufactured Housing, 2022
- Important Notices and Disclaimers
- Additional Important Notices and Disclaimers
- Chapter 1 General [Go to Page]
- 1.1 Scope.
- 1.2 Definitions.
- 1.3 Consumer Manual Requirements.
- 1.4 Incorporation by Reference.
- 1.5 Data Plate.
- 1.6 Serial Number.
- 1.7 Excluded Structures.
- 1.8 Waivers.
- 1.9 Interpretive Bulletins.
- 1.10 Use of Alternative Construction.
- 1.11 Certification Label.
- Chapter 2 Referenced Publications (Reserved)
- Chapter 3 Reserved
- Chapter 4 Planning Considerations [Go to Page]
- 4.1 Scope.
- 4.2 Special Definitions.
- 4.3 Light and Ventilation.
- 4.4 Ceiling Heights.
- 4.5 Exit Facilities — Exterior Doors.
- 4.6 Exit Facilities — Egress Windows and Devices.
- 4.7 Interior Privacy.
- 4.8 Interior Passage Doors.
- 4.9 Room Requirements.
- 4.10 Minimum Room Dimensions.
- 4.11 Bathroom Passage Doors.
- 4.12 Hallways.
- 4.13 Glass and Glazed Openings.
- 4.14 Landings.
- 4.15 Handrails.
- 4.16 Guards.
- 4.17 Stairway Illumination.
- Chapter 5 Fire Safety [Go to Page]
- 5.1 Scope.
- 5.2 Definitions.
- 5.3 Flame Spread.
- 5.4 Fire Safety of Bathrooms.
- 5.5 Kitchen Cabinet Protection.
- 5.6 Carpeting.
- 5.7 Fireblocking.
- 5.8 Requirements for Thermal Insulating Materials.
- 5.9 Fire and Life Safety EquipmentSmoke Alarms, Smoke Detection, and Household Fire Alarm Systems.
- 5.10 Fire Testing.
- 5.11 Fire Sprinkler System.
- 5.12 Attached Garages.
- 5.13 Carbon Monoxide Detectors.
- Chapter 6 Body and Frame Construction Requirements [Go to Page]
- 6.1 Scope.
- 6.2 Definitions.
- 6.3 General Requirements.
- 6.4 Minimum Standards.
- 6.5 Structural Design Requirements.
- 6.6 Windstorm Protection.
- 6.7 Resistance to Elements and Use.
- 6.8 Formaldehyde Emission Controls for Certain Wood Products.
- Chapter 7 Testing [Go to Page]
- 7.1 Structural Load Tests.
- 7.2 Test Procedure for Roof Trusses.
- 7.3 Requirements for Windows, Sliding Glass Doors, and Skylights Used in Manufactured Homes.
- 7.4 Requirements for Egress Windows and Devices for Use in Manufactured Homes.
- 7.5 Requirements for Swinging Exterior Passage Doors for Use in Manufactured Homes.
- 7.6 Air Chamber Test Method for Certification and Qualification of Formaldehyde Emission Levels.
- Chapter 8 Thermal Protection [Go to Page]
- 8.1 Scope.
- 8.2 Definitions.
- 8.3 Materials.
- 8.4 Condensation Control and Installation of Vapor Retarders.
- 8.5 Air Infiltration.
- 8.6 Heat Loss/Heat Gain.
- 8.7 Comfort Heat Gain.
- 8.8 Heat Loss, Heat Gain, and Cooling Load Calculations.
- 8.9 Criteria in Absence of Specific Data.
- 8.10 Heat Loss Certificate.
- 8.11 Comfort Cooling Certificate and Information.
- Chapter 9 Plumbing Systems [Go to Page]
- 9.1 Scope.
- 9.2 Definitions.
- 9.3 General Requirements.
- 9.4 Materials.
- 9.5 Joints and Connections.
- 9.6 Traps and Cleanouts.
- 9.7 Plumbing Fixtures.
- 9.8 Hangers and Supports.
- 9.9 Water Distribution Systems.
- 9.10 Drainage Systems.
- 9.11 Vents and Venting.
- 9.12 Tests and Inspection.
- Chapter 10 Heating, Cooling, and Fuel-Burning Systems [Go to Page]
- 10.1 Scope.
- 10.2 Definitions.
- 10.3 Minimum Standards.
- 10.4 Gas Piping Systems.
- 10.5 Oil Piping Systems.
- 10.6 Heat-Producing Appliances.
- 10.7 Exhaust Duct System and Provisions for the Future Installation of a Clothes Dryer.
- 10.8 Installation of Appliances.
- 10.9 Venting, Ventilation, and Combustion Air.
- 10.10 Instructions.
- 10.11 Marking.
- 10.12 Accessibility.
- 10.13 Cooling Appliances.
- 10.14 Circulating Air System.
- Chapter 11 Electrical Systems [Go to Page]
- 11.1 Scope.
- 11.2 Definitions.
- 11.3 Power Supply.
- 11.4 Disconnecting Means and Branch-Circuit Protective Equipment.
- 11.5 Branch Circuits Required.
- 11.6 Receptacle Outlets.
- 11.7 Fixtures and Appliances.
- 11.8 Wiring Methods and Materials.
- 11.9 Grounding.
- 11.10 Electrical Testing.
- 11.11 Calculations.
- 11.12 Wiring of Expandable Units and Multi-Wide Units.
- 11.13 Outdoor Outlets, Fixtures, Air-Conditioning Equipment, and Other Equipment.
- 11.14 Painting.
- 11.15 Polarization.
- 11.16 Examination of Equipment for Safety.
- Chapter 12 Transportation [Go to Page]
- 12.1 Scope.
- 12.2 Definitions.
- 12.3 General Requirements.
- 12.4 System Requirements.
- 12.5 System Component Requirements.
- Chapter 13 Special Construction Consideration [Go to Page]
- 13.1 Scope.
- 13.2 Definitions.
- 13.3 Dwelling Unit Separation.
- 13.4 Exterior Walls.
- 13.5 Electrical Service.
- 13.6 Water Service.
- 13.7 Safe Rooms.
- Chapter 14 Referenced Publications [Go to Page]
- 14.1 General.
- 14.2 NFPA Publications.
- 14.3 Other Publications.
- 14.4 References for Extracts in Mandatory Sections.
- Annex A Explanatory Material
- Annex B Structural Calculation Guidelines for In-Transit Conditions for Manufactured Homes
- Annex C Transportation Road Test Protocol Guidelines
- Annex D Informational References [Go to Page]
