TABLE OF CONTENTS. CHAPTER 2 DEFINITIONS Section 201 General Definitions... 15

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1 CHAPTER 1 ADMINISTRATION Title, Purpose and Scope Unsafe Buildings, Structures or Premises Violations and Penalties Organization and Enforcement Construction Codes Advisory Board Building Permits Fees Inspections Certificate of Occupancy CHAPTER 2 DEFINITIONS General Definitions CHAPTER 3 USE AND OCCUPANCY CLASSIFICATION General Classification Assembly Group A Business Group B Educational Group E Factory Group F High-hazard Group H Institutional Group I Mercantile Group M Residential Group R Storage Group S Utility and Miscellaneous Group U CHAPTER 4 SPECIAL DETAILED REQUIREMENTS BASED ON USE AND OCCUPANCY Scope and Definition Covered Mall Buildings High-rise Buildings Atriums Underground Buildings Motor-vehicle-related Occupancies Group I Group I Motion Picture Projection Rooms Stages and Platforms Special Amusement Buildings Aircraft-related Occupancies Combustible Storage Hazardous Materials Groups H-1, H-2, H-3, H-4 and H Application of Flammable Finishes Drying Rooms Organic Coatings Group I-1, R-1, R-2, R Hydrogen Cutoff Rooms Waterfront Structures, Piers, Wharves and Buildings Private and Utility Transformer Vaults Medical Gas Systems Recyclable Materials CHAPTER 5 GENERAL BUILDING HEIGHTS AND AREAS General Definitions General Height and Area Limitations Height Mezzanines Area Modifications Unlimited Area Buildings Mixed Use and Occupancy Special Provisions CHAPTER 6 TYPES OF CONSTRUCTION General Construction Classification Combustible Material in Type I and II Construction CHAPTER 7 FIRE-RESISTANCE-RATED CONSTRUCTION General SEATTLE BUILDING CODE v

2 702 Definitions Fire-resistance Ratings and Fire Tests Exterior Walls Fire Walls Fire Barriers Shaft Enclosures Fire Partitions Smoke Barriers Smoke Partitions Horizontal Assemblies Penetrations Fire-resistant Joint Systems Fire-resistance Rating of Structural Members Opening Protectives Ducts and Air Transfer Openings Concealed Spaces Fire-resistance Requirements for Plaster Thermal- and Sound-insulating Materials Prescriptive Fire Resistance Calculated Fire Resistance CHAPTER 8 INTERIOR FINISHES General Definitions Wall and Ceiling Finishes Interior Floor Finish Combustible Materials in Type I and II Construction Decorative Materials and Trim CHAPTER 9 FIRE PROTECTION SYSTEMS General Definitions Automatic Sprinkler Systems Alternative Automatic Fire-extinguishing Systems Standpipe Systems Portable Fire Extinguishers Fire Alarm and Detection Systems Emergency Alarm Systems Smoke Control Systems Smoke and Heat Vents Fire Command Center Fire Department Connections CHAPTER 10 MEANS OF EGRESS Administration Definitions General Means of Egress Occupant Load Egress Width Means of Egress Illumination Accessible Means of Egress Doors, Gates and Turnstiles Stairways Ramps Exit Signs Handrails Guards Exit Access Exit and Exit Access Doorways Exit Access Travel Distance Corridors Exits Number of Exits and Continuity Vertical Exit Enclosures Exit Passageways Horizontal Exits Exterior Exit Ramps and Stairways Exit Discharge Assembly Emergency Escape and Rescue CHAPTER 11 ACCESSIBILITY General Definitions Scoping Requirements Accessible Route Accessible Entrances Parking and Passenger Loading Facilities Dwelling Units, ((and)) Sleeping Units and Transient Lodging Facilities Special Occupancies Other Features and Facilities Signage Telephones vi 2006 SEATTLE BUILDING CODE

3 1112 Bus Stops Transportation Facilities and Stations Airports CHAPTER 12 INTERIOR ENVIRONMENT General Definitions Ventilation Temperature Control Lighting Yards or Courts Sound Transmission Interior Space Dimensions Access to Unoccupied Spaces Surrounding Materials CHAPTER 13 ENERGY EFFICIENCY General CHAPTER 14 EXTERIOR WALLS General Definitions Performance Requirements Materials Installation of Wall Coverings Combustible Materials on the Exterior Side of Exterior Walls Metal Composite Materials (MCM) CHAPTER 15 ROOF ASSEMBLIES AND ROOFTOP STRUCTURES General Definitions Weather Protection Performance Requirements Fire Classification Materials Requirements for Roof Coverings Roof Insulation Rooftop Structures Reroofing CHAPTER 16 STRUCTURAL DESIGN General Definitions and Notations Construction Documents General Design Requirements Load Combinations Dead Loads Live Loads Snow Loads Wind Loads Soil Lateral Loads Rain Loads Flood Loads Earthquake Loads CHAPTER 17 STRUCTURAL TESTS AND SPECIAL INSPECTIONS General Definitions Approvals Special Inspections Statement of Special Inspections ((1706 Contractor Responsibility)) Special Inspections for Seismic Resistance Structural Testing for Seismic Resistance Structural Observations Design Strengths of Materials Alternative Test Procedure Test Safe Load In-situ Load Tests Preconstruction Load Tests Material and Test Standards CHAPTER 18 SOILS AND FOUNDATIONS General Foundation and Soils Investigations Excavation, Grading and Fill Allowable Load-bearing Values of Soils Footings and Foundations Retaining Walls Dampproofing and Waterproofing SEATTLE BUILDING CODE vii

4 1808 Pier and Pile Foundations Driven Pile Foundations Cast-in-place Concrete Pile Foundations Composite Piles Pier Foundations Methane Reduction Measures CHAPTER 19 CONCRETE General Definitions Specifications for Tests and Materials Durability Requirements Concrete Quality, Mixing and Placing Formwork, Embedded Pipes and Construction Joints Details of Reinforcement Modifications to ACI Structural Plain Concrete Minimum Slab Provisions Anchorage to Concrete Allowable Stress Design Anchorage to Concrete Strength Design Shotcrete Reinforced Gypsum Concrete Concrete-filled Pipe Columns CHAPTER 20 ALUMINUM General Materials CHAPTER 21 MASONRY General Definitions and Notations Masonry Construction Materials Construction Quality Assurance Seismic Design Allowable Stress Design Strength Design of Masonry Empirical Design of Masonry Glass Unit Masonry Masonry Fireplaces Masonry Heaters Masonry Chimneys Emission Standards CHAPTER 22 STEEL General Definitions Identification and Protection of Steel for Structural Purposes Connections Structural Steel Steel Joists Steel Cable Structures Steel Storage Racks Cold-formed Steel Cold-formed Steel Light-framed Construction CHAPTER 23 WOOD General Definitions Minimum Standards and Quality General Construction Requirements General Design Requirements for Lateral-force-resisting Systems Allowable Stress Design Load and Resistance Factor Design Conventional Light-frame Construction CHAPTER 24 GLASS AND GLAZING General Definitions General Requirements for Glass Wind, Snow, Seismic and Dead Loads on Glass Sloped Glazing and Skylights Safety Glazing Glass in Handrails and Guards Glazing in Athletic Facilities Glass in Elevator Hoistway CHAPTER 25 GYPSUM BOARD AND PLASTER General viii 2006 SEATTLE BUILDING CODE

5 2502 Definitions Inspection Vertical and Horizontal Assemblies Shear Wall Construction Gypsum Board Materials Lathing and Plastering Gypsum Construction Gypsum Board in Showers and Water Closets Lathing and Furring for Cement Plaster (Stucco) Interior Plaster Exterior Plaster Exposed Aggregate Plaster CHAPTER 26 PLASTIC General Definitions Foam Plastic Insulation Interior Finish and Trim Plastic Veneer Light-transmitting Plastics Light-transmitting Plastic Wall Panels Light-transmitting Plastic Glazing Light-transmitting Plastic Roof Panels Light-transmitting Plastic Skylight Glazing Light-transmitting Plastic Interior Signs CHAPTER 27 ELECTRICAL General Emergency and Standby Power Systems CHAPTER 28 MECHANICAL SYSTEMS General CHAPTER 29 PLUMBING SYSTEMS Plumbing Code and Enforcement General Special Provisions CHAPTER 30 ELEVATORS AND CONVEYING SYSTEMS Purpose Scope Codes Definitions Authority to Disconnect Utilities, take Conveyances out of Service and Investigate Accidents Installation and Alteration Permits Plans and Specifications Required Installation Inspections Certificates of Inspection and Operation Requirements for Operation and Maintenance Retroactive Requirements for Existing Installations Retroactive Requirements for Existing Material Lifts Requirements for New Material Lifts Emergency Service for Elevators in Existing Buildings Phase I Recall Emergency Service for Elevators in Existing Buildings Phase II High Rise In-car Operation New Installations Construction Standards New Installations General Emergency Operations Requirements New Installations Phase I Recall Requirements New Installations Phase II In-car Operations Requirements (ASME A17.1, ) New Installations Construction of Hoistways and Machine Rooms New Installation Construction of Floors (ASME A17.1, ) Installation of Pipes or Ducts Conveying Gases, Vapors or Liquids or Electrical Wiring in Hoistways, Machine Rooms or Machinery Spaces (ASME A ) Access to Pits (ASME A17.1, 2.2.4) Supply Line Shutoff Valve (ASME) A17.1, ) Guards at Ceiling Intersection (ASME A17.1, ) Test Reports Acceptance Inspections and Tests SEATTLE BUILDING CODE ix

6 3028 Periodic Inspections and Tests Periodic Inspection and Tests of Escalators and Moving Walks (ASME A17.1, ) CHAPTER 31 SPECIAL CONSTRUCTION General Membrane Structures Temporary Structures Pedestrian Walkways and Tunnels Awnings and Canopies ((Marquees)) No Requirements Signs Radio and Television Towers Swimming Pool Enclosures and Safety Devices CHAPTER 32 ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY General ((3202 Encroachments)) CHAPTER 33 SAFEGUARDS DURING CONSTRUCTION General Construction Safeguards Demolition Site Work Sanitary Protection of Pedestrians Protection of Adjoining Property Temporary Use of Streets, Alleys and Public Property Fire Extinguishers Exits Standpipes Automatic Sprinkler System CHAPTER 34 EXISTING STRUCTURES Existing Occupancies Definitions Maintenance Additions, Alterations or Repairs Moved Buildings Change of Occupancy Accessibility for Existing Buildings CHAPTER 35 REFERENCED STANDARDS APPENDIX A EMPLOYEE QUALIFICATIONS A101 Building Official Qualifications A102 Referenced Standards APPENDIX B BOARD OF APPEALS B101 General APPENDIX C GROUP U AGRICULTURAL BUILDINGS C101 General C102 Allowable Height and Area C103 Mixed Occupancies C104 Exits APPENDIX D FIRE DISTRICTS D101 General D102 Building Restrictions D103 Changes to Buildings D104 Buildings Located Partially in the Fire District D105 Exceptions to Restrictions in Fire District D106 Referenced Standards APPENDIX E SUPPLEMENTARY ACCESSIBILITY REQUIREMENTS E101 General E102 Definitions E103 Accessible Route E104 Special Occupancies E105 Other Features and Facilities E106 Telephones E107 Signage E108 Bus Stops E109 Transportation Facilities and Stations E110 Airports E111 Referenced Standards x 2006 SEATTLE BUILDING CODE

7 APPENDIX F RODENTPROOFING F101 General APPENDIX G FLOOD-RESISTANT CONSTRUCTION G101 Administration G102 Applicability G103 Powers and Duties G104 Permits G105 Variances G201 Definitions G301 Subdivisions G401 Site Improvement G501 Manufactured Homes G601 Recreational Vehicles G701 Tanks G801 Other Building Work G901 Referenced Standards APPENDIX J GRADING J101 General J102 Definitions J 103 Permits Required J104 Permit Application and Submittals J105 Inspections J106 Excavations J107 Fills J108 Setbacks J109 Drainage and Terracing J110 Erosion Control J111 Referenced Standards APPENDIX K INTERNATIONAL CODE COUNCIL ELECTRICAL CODE ADMINISTRATIVE PROVISIONS INDEX APPENDIX H SIGNS H101 General H102 Definitions H103 Location H104 Identification H105 Design and Construction H106 Electrical H107 Combustible Materials H108 Animated Devices H109 Ground Signs H110 Roof Signs H111 Wall Signs H112 Projecting Signs H113 Marquee Signs H114 Portable Signs H115 Referenced Standards APPENDIX I PATIO COVERS I101 General I102 Definitions I103 Exterior Openings I104 Structural Provisions SEATTLE BUILDING CODE xi

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