FEMA P 1100SeismicRetrofitFamilyDwellingsPre standard 2019
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FEMA P-1100, Seismic Retrofit Family Dwellings Pre-standard
| Published By | Publication Date | Number of Pages |
| FEMA | 2019 |
None
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | FEMA P-1100 |
| 3 | Vulnerability-Based Seismic Assessment and Retrofit of One- and Two-Family Dwellings Volume 1 – Prestandard |
| 5 | Preface |
| 7 | Table of Contents |
| 13 | List of Figures |
| 19 | List of Tables |
| 21 | Ch1: Scope and Administration 1.1 Prestandard Scope |
| 22 | 1.2 Prestandard Purpose 1.3 Alternative Methods 1.4 Use of This Prestandard |
| 23 | 1.4.1 Partial Retrofit 1.4.2 Phased Retrofit 1.4.3 New Work 1.5 Combinations of Seismic Vulnerabilities |
| 24 | 1.6 Site Seismicity 1.7 Assessment and Retrofit Methodologies 1.7.1 Assessment Methodologies |
| 25 | 1.7.2 Retrofit Methodologies 1.8 Limitations of Use |
| 26 | 1.9 Conditions Beyond the Scope of this Prestandard 1.10 Administrative Provisions |
| 33 | 2.1 Definitions |
| 40 | 2.2 Notation |
| 41 | 2.3 Sources of Definitions 2.4 Abbreviations |
| 43 | Ch3: Minimum Construction Requirements 3.1 General 3.1.1 Existing Conditions 3.1.2 Shoring and Bracing 3.2 Materials 3.2.1 Sawn Lumber |
| 44 | 3.2.2 Preservative Treated Lumber 3.2.3 Wood Structural Panel Sheathing 3.2.4 Cold-Formed Steel 3.2.5 Minimum Fastening |
| 48 | 3.2.6 Connectors 3.2.7 Concrete 3.2.8 Reinforcing Steel 3.2.9 Structural Steel |
| 49 | 3.2.10 Bolts and Threaded Rods 3.2.11 Post-Installed Anchors 3.2.12 Proprietary Shear Walls 3.3 Installation 3.3.1 General 3.3.2 Notching and Boring |
| 51 | 3.3.3 Anchorage to Existing Concrete 3.3.4 Anchor Bolt Installation |
| 52 | 3.3.5 Wood Structural Panel Sheathing 3.3.6 Fasteners 3.3.7 Connectors 3.3.8 Structural Steel |
| 53 | 3.3.9 Reinforcing Steel 3.3.10 Crawlspace Ventilation and Access Openings 3.3.11 Special Inspections |
| 55 | Ch4: Vulnerability-Based Assessment and Retrofit of Crawlspace Dwellings 4.1 General |
| 56 | 4.1.1 Use of this Chapter 4.1.2 Vulnerability-Based Assessment and Retrofit Methods |
| 57 | 4.1.3 Prescriptive Retrofit 4.1.4 Simplified Engineered Retrofit |
| 58 | 4.2 Definitions and Minimum Requirements 4.3 Vulnerability-Based Assessment 4.3.1 Scope |
| 59 | 4.3.2 Simplified Assessment |
| 60 | 4.3.3 Detailed Assessment 4.3.4 Engineered Assessment |
| 61 | 4.4 Prescriptive Vulnerability-Based Retrofit 4.4.1 Scope 4.4.2 Determination of Seismic Design Category 4.4.3 Determination of Weight Classification |
| 62 | 4.4.4 Foundations 4.4.5 Foundation Sill Plate Anchorage to the Foundation 4.4.6 Cripple Wall Sheathing |
| 63 | 4.4.7 Additional Requirements for Cripple Walls with Tie-Downs 4.4.7.1 Existing Foundation Requirements 4.4.7.2 Existing Foundation Visual Verification and Testing Requirements 4.4.7.2.1 Visual Verification 4.4.7.2.2 Existing Foundation Quality Requirements |
| 64 | 4.4.7.2.3 Existing Foundation Tension Test Requirements 4.4.7.2.4 Adhesive Anchor Installation Verification |
| 65 | 4.4.7.3 Tie-Down Requirements 4.4.8 Connection to Dwelling Above 4.4.9 Additional Requirements for Non-Rectangular Dwellings with “T” or “L” Plan Configurations |
| 66 | 4.4.10 Special Provisions for One-Story Homes with Clay Tile Roofing 4.5 Simplified Engineered Vulnerability-Based Retrofit 4.5.1 General |
| 67 | 4.5.2 Additional Simplifying Assumptions |
| 85 | Ch5: Vulnerability-Based Assessment and Retrofit of Living-Space-Over-Garage Dwellings 5.1 General 5.1.1 Use of this Chapter 5.1.2 Vulnerability-Based Assessment and Retrofit Methods 5.1.3 Prescriptive Retrofit |
| 86 | 5.1.4 Simplified Engineered Retrofit |
| 87 | 5.2 Definitions and Minimum Requirements 5.3 Vulnerability-Based Assessment 5.3.1 Scope 5.3.2 Simplified Assessment |
| 88 | 5.3.3 Detailed Assessment 5.3.4 Engineered Assessment 5.4 Prescriptive Vulnerability-Based Retrofit 5.4.1 Scope |
| 89 | 5.4.2 Determination of Earthquake Retrofit Schedule 5.4.3 Determination of Weight Classification 5.4.4 Determination of Building Area 5.4.5 Determination of Building Retrofit Type |
| 90 | 5.4.6 Wood Structural Panel Shear Wall Retrofit 5.4.6.1 Wood Structural Panel Shear Wall Sheathing 5.4.6.2 Foundation for Wood Structural Shear Panel 5.4.6.3 Tie-Downs to Existing Foundations |
| 91 | 5.4.6.4 Existing Foundation Visual Verification and Testing Requirements 5.4.6.4.1 Visual Verification 5.4.6.4.2 Existing Foundation Quality Requirements 5.4.6.4.3 Existing Foundation Tension Test Requirements |
| 92 | 5.4.6.4.4 Adhesive Anchor Installation Verification 5.4.6.5 Foundation Sill Plate Anchorage to the Foundation |
| 93 | 5.4.6.6 Connection to Dwelling Above 5.4.7 Steel Retrofit Column 5.4.7.1 Steel Column 5.4.7.2 Foundation for Steel Column 5.4.7.3 Collector for Steel Column 5.4.8 Proprietary Shear Wall Retrofit 5.4.8.1 Proprietary Shear Wall |
| 94 | 5.4.8.2 Foundation for Proprietary Shear Wall 5.4.8.3 Collector for Proprietary Shear Wall 5.5 Simplified Engineered Vulnerability-Based Retrofit 5.5.1 General |
| 96 | 5.5.2 Additional Simplifying Assumptions |
| 97 | 5.5.3 Design of Steel Column Retrofit Exceptions 5.5.4 Design of Proprietary Shear Wall Retrofit |
| 129 | Ch6: Vulnerability-Based Assessment and Retrofit of Hillside Dwellings 6.1 General |
| 130 | 6.1.1 Use of this Chapter 6.1.2 Vulnerability-Based Assessment and Retrofit Methods 6.2 Definitions and Minimum Requirements |
| 131 | 6.3 Vulnerability-Based Assessment 6.3.1 Scope |
| 132 | 6.3.2 Detailed Assessment 6.3.3 Engineered Assessment |
| 133 | 6.4 Prescriptive Vulnerability-Based Retrofit 6.5 Simplified Engineered Vulnerability-Based Retrofit 6.5.1 Scope 6.5.2 General 6.5.2.1 Seismic Base Shear for Foundation Retrofit |
| 134 | 6.5.2.2 Seismic Base Shear for Other Retrofits 6.5.3 Retrofit of Foundations |
| 135 | 6.5.4 Retrofit of Base-Level Diaphragm Anchorage 6.5.4.1 Design of Primary Anchors |
| 137 | 6.5.4.2 Design of Secondary Anchors 6.5.4.3 Design of Shear Anchors |
| 138 | 6.5.5 Retrofit of Perimeter-Framed Crawlspace Walls |
| 143 | Ch7: Vulnerability-Based Assessment and Retrofit of Masonry Chimneys and Fireplace Surrounds 7.1 General 7.1.1 Use of this Chapter 7.1.2 Vulnerability-Based Assessment and Retrofit Methods |
| 144 | 7.1.3 Prescriptive Retrofit of Masonry Chimneys 7.1.4 Engineered Retrofit of Masonry Chimneys 7.2 Definitions and Minimum Requirements 7.3 Vulnerability-Based Assessment 7.3.1 Scope 7.3.2 Simplified Assessment of Chimneys |
| 145 | 7.3.3 Detailed Assessment of Chimneys |
| 146 | 7.3.4 Simplified Assessment of Masonry Fireplace Surrounds 7.3.5 Detailed Assessment of Masonry Fireplace Surrounds |
| 147 | 7.4 Chimney Prescriptive Retrofit 7.4.1 Scope |
| 148 | 7.4.2 Capping of Chimney at Roof, Floor, or Ceiling Level 7.4.2.1 Chimney Partial Removal and Capping |
| 150 | 7.4.2.2 Interior of the Firebox 7.4.3 Reconstruction from the Chimney Base 7.4.3.1 Chimney Partial Removal |
| 151 | 7.4.3.2 Reconstruction |
| 154 | 7.4.3.3 Chimney Transition |
| 155 | 7.4.4 Reconstruction from Chimney Base using a Factory-Built Fireplace Insert 7.4.4.1 Chimney Partial Removal 7.4.4.2 Reconstruction |
| 156 | 7.4.4.3 Insert-to-Chimney Transition 7.4.5 Full Reconstruction of Firebox and Chimney Using Factory-Built Components |
| 157 | 7.4.5.1 Chimney and Firebox Removal 7.4.5.2 Reconstruction |
| 159 | 7.5 Masonry Fireplace Surround Prescriptive Retrofit 7.6 Engineered Retrofit of Masonry Chimneys 7.6.1 Building Code-Based Retrofit |
| 160 | 7.6.2 Performance-Based Retrofit |
| 161 | Ch8: Detailed Vulnerability-Based Assessment 8.1 Foundation |
| 162 | 8.2 Foundation Sill Plate Anchorage to Foundation |
| 164 | 8.3 Bracing Wall Sheathing |
| 166 | 8.4 Floor Framing Rim Joist and Blocking |
| 168 | 8.5 Requirements for Ground Story Bracing Walls for Living-Space-Over Garage Dwellings 8.5.1 1994 or 1997 UBC Conventional Construction Provisions |
| 170 | 8.5.2 1997 UBC Engineered Seismic Design Provisions 8.5.3 2000 or later IRC Seismic Wall Bracing Provisions 8.5.4 2000 or later IBC Engineered Seismic Design Provisions |
| 171 | Commentary C.1 Scope and Administration C.1.1 Prestandard Scope |
| 175 | C.1.2 Prestandard Purpose |
| 177 | C.1.3 Alternative Methods C.1.4 Use of This Prestandard |
| 179 | C.1.5 Combinations of Seismic Vulnerabilities |
| 181 | C.1.6 Site Seismicity C.1.7 Assessment and Retrofit Methodologies |
| 182 | C.1.8 Limitations of Use |
| 183 | C.1.9 Conditions Beyond the Scope of this Prestandard C.1.10 Administrative Provisions |
| 184 | C.2 Definitions, Notation, and Abbreviations C.2.1 Definitions |
| 190 | C.2.2 Notation C.2.3 Sources of Definitions C.2.4 Abbreviations C.3 Minimum Construction Requirements |
| 191 | C.3.1 General C.3.2 Materials |
| 193 | C.3.3 Installation |
| 194 | C.4 Vulnerability-Based Assessment and Retrofit of Crawlspace Dwellings C.4.1 General |
| 196 | C.4.2 Definitions and Minimum Requirements |
| 197 | C.4.3 Vulnerability-Based Assessment C.4.3.1 Scope C.4.3.2 Simplified Assessment |
| 199 | C.4.3.3 Detailed Assessment C.4.3.4 Engineered Assessment C.4.4 Prescriptive Vulnerability-Based Retrofit C.4.4.1 Scope C.4.4.2 Determination of Seismic Design Category |
| 200 | C.4.4.3 Determination of Weight Classification C.4.4.4 Foundations |
| 201 | C.4.4.5 Foundation Sill Plate Anchorage to the Foundation C.4.4.6 Cripple Wall Sheathing C.4.4.7 Additional Requirements for Cripple Walls with Tie-Downs C.4.4.8 Connection to Dwelling Above C.4.4.9 Additional Requirements for Non-Rectangular Dwellings with Plan “T” or “L” Configurations |
| 202 | C.4.4.10 Special Provisions for One-Story Homes with Clay Tile Roofing |
| 203 | C.4.4.11 Commentary for Prescriptive Vulnerability-Based Retrofit Assumptions Made in Section C.4.4 |
| 204 | C.4.5 Simplified Engineered Vulnerability-Based Retrofit C.4.5.1 General |
| 206 | C.4.5.2 Additional Simplifying Assumptions |
| 209 | C.5 Vulnerability-Based Assessment and Retrofit of Living-Space-Over-Garage Dwellings C.5.1 General |
| 211 | C.5.2 Definitions and Minimum Requirements C.5.3 Vulnerability-Based Assessment C.5.3.1 Scope |
| 212 | C.5.3.2 Simplified Assessment |
| 213 | C.5.3.3 Detailed Assessment C.5.3.4 Engineered Assessment C.5.4 Prescriptive Vulnerability-Based Retrofit C.5.4.1 Scope |
| 214 | C.5.4.2 Determination of Earthquake Retrofit Schedule C.5.4.3 Determination of Weight Classification |
| 215 | C.5.4.4 Determination of Building Area |
| 217 | C.5.4.5 Determination of Building Retrofit Type |
| 218 | C.5.4.6 Wood Structural Panel Shear Wall Retrofit C.5.4.6.1 Tie-Downs to Existing Foundations |
| 219 | C.5.4.6.2 Connection to Dwelling Above C.5.4.7 Steel Retrofit Column C.5.4.7.1 Foundation for Steel Column |
| 220 | C.5.4.7.2 Collector for Steel Column C.5.4.8 Proprietary Shear Wall Retrofit C.5.5 Simplified Engineered Vulnerability-Based Retrofit C.5.5.1 General |
| 222 | C.5.5.2 Additional Simplifying Assumptions |
| 224 | C.6 Vulnerability-Based Assessment and Retrofit of Hillside Dwellings C.6.1 General |
| 230 | C.6.1.1 Use of this Chapter |
| 233 | C.6.1.2 Vulnerability-Based Assessment and Retrofit Methods C.6.2 Definitions and Minimum Requirements C.6.3 Vulnerability-Based Assessment C.6.3.1 Scope |
| 234 | C.6.3.2 Detailed Assessment C.6.3.3 Engineered Assessment C.6.4 Prescriptive Vulnerability-Based Retrofit |
| 235 | C.6.5 Simplified Engineered Vulnerability-Based Retrofit C.6.5.1 Scope |
| 236 | C.6.5.2 General C.6.5.3 Retrofit of Foundations |
| 237 | C.6.5.4 Retrofit of Base-Level Diaphragm Anchorage C.6.5.4.1 Design of Primary Anchors |
| 240 | C.6.5.4.2 Design of Secondary Anchors |
| 243 | C.6.5.4.3 Design of Shear Anchors |
| 244 | C.6.5.5 Retrofit of Perimeter-Framed Crawlspace Walls |
| 245 | C.7 Vulnerability-Based Assessment and Retrofit of Masonry Chimneys and Fireplace Surrounds C.7.1 General |
| 246 | C.7.2 Definitions and Minimum Requirements C.7.3 Vulnerability-Based Assessment C.7.3.1 Scope |
| 247 | C.7.3.2 Simplified Assessment of Chimneys |
| 248 | C.7.3.3 Detailed Assessment of Chimneys |
| 250 | C.7.3.4 Simplified Assessment of Masonry Veneer Fireplace Surrounds |
| 251 | C.7.3.5 Detailed Assessment of Masonry Fireplace Surrounds C.7.4 Chimney Prescriptive Retrofit C.7.4.1 Scope |
| 252 | C.7.4.2 Capping of Chimney at Roof, Floor, or Ceiling Level C.7.4.3 Reconstruction from the Chimney Base |
| 253 | C.7.4.4 Reconstruction from Chimney Base Using a Factory-Built Fireplace Insert C.7.5 Masonry Fireplace Surround Prescriptive Retrofit C.7.6 Engineered Retrofit of Masonry Chimneys C.7.6.1 Building Code-Based Retrofit |
| 255 | C.7.6.2 Performance-Based Retrofit C.8 Detailed Vulnerability-Based Assessment |
| 256 | C.8.1 Foundation |
| 258 | C.8.2 Foundation Sill Plate Anchorage to Foundation |
| 261 | C.8.3 Bracing Wall Sheathing |
| 263 | C.8.4 Floor Framing Rim Joist and Blocking |
| 264 | C.8.5 Ground Story Bracing Walls for Living-Space-Over-Garage Dwellings |
| 265 | Appendix L: Summary of Loads for Simplified Engineering Retrofit |
| 271 | Appendix O: Other Vulnerabilities O.1 General O.2 Other Common Vulnerabilities |
| 273 | O.3 Resources for Addressing Vulnerabilities |
| 275 | Appendix S: Site Soil Factors S.1 Overview S.2 Site Soil Hazard Definitions |
| 276 | S.2.1 Ground Shaking S.2.2 Fault Rupture S.2.3 Liquefaction |
| 277 | S.2.4 Slope Stability S.2.5 Densification and Differential Compaction S.3 Simplified Site Assessment/Screening |
| 278 | S.3.1 Ground Shaking S.3.2 Fault Rupture S.3.3 Liquefaction S.3.4 Slope Stability S.3.5 Densification and Differential Compaction |
| 279 | References |
| 285 | Project Participants ATC Management and Oversight California Earthquake Authority FEMA Oversight Project Technical Committee |
| 286 | Project Steering Committee Working Group |
| 290 | Back Cover |
