{"id":334532,"date":"2024-10-19T23:19:36","date_gmt":"2024-10-19T23:19:36","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/fema-p-2012assessingseismicperformanceirregularities-2018\/"},"modified":"2024-10-25T22:18:00","modified_gmt":"2024-10-25T22:18:00","slug":"fema-p-2012assessingseismicperformanceirregularities-2018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/fema\/fema-p-2012assessingseismicperformanceirregularities-2018\/","title":{"rendered":"FEMA P 2012AssessingSeismicPerformanceIrregularities 2018"},"content":{"rendered":"

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PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nFEMA P-2012 <\/td>\n<\/tr>\n
3<\/td>\nAssessing Seismic Performance of Buildings with Configuration Irregularities: Calibrating Current Standards and Practices <\/td>\n<\/tr>\n
5<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nPreface
Preface <\/td>\n<\/tr>\n
9<\/td>\nTable of Contents <\/td>\n<\/tr>\n
15<\/td>\nList of Figures <\/td>\n<\/tr>\n
27<\/td>\nList of Tables <\/td>\n<\/tr>\n
31<\/td>\nCh1: Introduction
1.1 Background <\/td>\n<\/tr>\n
32<\/td>\n1.2 Overview of Irregularities Considered <\/td>\n<\/tr>\n
33<\/td>\n1.3 Target Audience
1.4 Content and Organization <\/td>\n<\/tr>\n
35<\/td>\nCh2: Overview of Irregularities <\/td>\n<\/tr>\n
36<\/td>\n2.1 Literature Search <\/td>\n<\/tr>\n
37<\/td>\n2.1.1 Observed Performance of Irregular Buildings
2.1.1.1 Earthquake-Related Fatalities
2.1.1.2 Causes of Structural Collapse
Recent U.S. Earthquakes <\/td>\n<\/tr>\n
41<\/td>\n1995 Kobe Earthquake <\/td>\n<\/tr>\n
45<\/td>\n2010 Maule Earthquake <\/td>\n<\/tr>\n
46<\/td>\n2.1.2 Treatment of Configuration Irregularities in Codes and Standards
2.1.2.1 U.S. Codes and Standards <\/td>\n<\/tr>\n
48<\/td>\n2.1.2.2 International Codes <\/td>\n<\/tr>\n
49<\/td>\n2.1.3 Published Research on Irregularities <\/td>\n<\/tr>\n
53<\/td>\n2.2 Performance Concerns for Irregularities and Corresponding Code Requirements <\/td>\n<\/tr>\n
59<\/td>\n2.3 Treatment of Irregularities in this Report <\/td>\n<\/tr>\n
61<\/td>\nCh3: Archetype Design, Modeling, and Analysis Approach
3.1 Scope of Analytical Studies <\/td>\n<\/tr>\n
64<\/td>\n3.2 Archetype Configurations and Designs <\/td>\n<\/tr>\n
65<\/td>\n3.2.1 Steel Moment Frame Archetypes <\/td>\n<\/tr>\n
68<\/td>\n3.2.2 Reinforced Concrete Moment Frame Archetypes <\/td>\n<\/tr>\n
70<\/td>\n3.2.3 Reinforced Concrete Shear Wall Archetypes <\/td>\n<\/tr>\n
72<\/td>\n3.3 Structural Modeling of Archetype Buildings <\/td>\n<\/tr>\n
73<\/td>\n3.3.1 Steel Moment Frame Archetypes
3.3.1.1 System Modeling <\/td>\n<\/tr>\n
74<\/td>\n3.3.1.2 Modeling of Beam and Column Components <\/td>\n<\/tr>\n
76<\/td>\n3.3.1.3 Modeling of Joint Panel Zones <\/td>\n<\/tr>\n
77<\/td>\n3.3.2 Reinforced Concrete Moment Frame Archetypes
3.3.2.1 System Modeling
3.3.2.2 Modeling of Beam and Column Components <\/td>\n<\/tr>\n
79<\/td>\n3.3.2.3 Modeling of Joint Panel Zones <\/td>\n<\/tr>\n
80<\/td>\n3.3.3 Reinforced Concrete Shear Wall Archetypes
3.3.3.1 System Modeling <\/td>\n<\/tr>\n
81<\/td>\n3.3.3.2 Modeling of Walls using Fiber Elements <\/td>\n<\/tr>\n
82<\/td>\n3.3.3.3 Material Constitutive Models for Concrete and Rebar <\/td>\n<\/tr>\n
83<\/td>\n3.4 Archetype Analysis Methods <\/td>\n<\/tr>\n
84<\/td>\n3.4.1 Overview of FEMA P695 Analysis Methods <\/td>\n<\/tr>\n
85<\/td>\n3.4.2 Selection of Ground Motions <\/td>\n<\/tr>\n
86<\/td>\n3.4.3 Incremental Dynamic Analysis <\/td>\n<\/tr>\n
88<\/td>\n3.4.4 Evaluation of MCER Collapse Performance <\/td>\n<\/tr>\n
89<\/td>\n3.4.5 Collapse Evaluation Using Absolute and Relative Measures of Collapse Risk <\/td>\n<\/tr>\n
90<\/td>\n3.4.6 Tracking of Non-Collapse Archetype Response Parameters <\/td>\n<\/tr>\n
93<\/td>\nCh4: Buildings with Torsional Irregularities [H1, H6]
4.1 Overview
4.2 Objectives of Studies and Summary of Findings <\/td>\n<\/tr>\n
94<\/td>\n4.2.1 Objective 1: Evaluate ASCE\/SEI 7-16 Torsion Design Provisions
4.2.2 Objective 2: Propose Modifications to the ASCE\/SEI 7-16 Seismic Torsion Provisions
4.2.3 Summary of Findings <\/td>\n<\/tr>\n
95<\/td>\n4.3 Methodology to Assess Torsion Design Provisions <\/td>\n<\/tr>\n
97<\/td>\n4.4 Archetype Design Space
4.4.1 Plan Configurations <\/td>\n<\/tr>\n
100<\/td>\n4.4.2 Baseline Archetypes <\/td>\n<\/tr>\n
102<\/td>\n4.4.3 Proportioning the Lateral System for Seismic Design <\/td>\n<\/tr>\n
103<\/td>\nMethod 1: Decoupled strength and stiffness
Method 2: Coupled strength and stiffness
4.5 Results
4.5.1 Collapse Performance under Current Code Requirements <\/td>\n<\/tr>\n
106<\/td>\n4.5.2 Observations about Torsion Design Requirements <\/td>\n<\/tr>\n
107<\/td>\n4.5.3 Recommended Minimum Requirements <\/td>\n<\/tr>\n
113<\/td>\n4.6 Conclusions and Recommendations <\/td>\n<\/tr>\n
115<\/td>\nCh5: Concrete Wall Buildings with Vertical Irregularities [V1, V8]
5.1 Overview and Summary of Findings <\/td>\n<\/tr>\n
116<\/td>\n5.2 Design Procedures and Common Irregularities <\/td>\n<\/tr>\n
118<\/td>\n5.3 Overview of Archetype Designs <\/td>\n<\/tr>\n
121<\/td>\n5.4 Modeling RC Wall Response
5.4.1 Methodology Validation and Comparison Studies <\/td>\n<\/tr>\n
122<\/td>\n5.4.2 Non-Simulated Failure Modes <\/td>\n<\/tr>\n
125<\/td>\n5.5 Assessment of Collapse Risk
5.5.1 Overview <\/td>\n<\/tr>\n
126<\/td>\n5.5.2 Results <\/td>\n<\/tr>\n
131<\/td>\n5.6 Conclusions and Recommendations <\/td>\n<\/tr>\n
133<\/td>\nCh6: Moment Frame Buildings with Vertical Irregularities [V1, V2, V5, V6, V7]
6.1 Overview <\/td>\n<\/tr>\n
134<\/td>\n6.2 Objectives of Studies and Summary of Findings
6.2.1 Objective 1: Assess the Adequacy of ASCE\/SEI 7-16 Vertical Irregularity Provisions
6.2.2 Objective 2: Assess the Necessity for Expanding the ASCE\/SEI 7-16 Vertical Irregularity Provisions <\/td>\n<\/tr>\n
135<\/td>\n6.2.3 Summary of Findings
6.3 Methodology to Assess Vertical Irregularity Design Provisions <\/td>\n<\/tr>\n
136<\/td>\n6.4 Archetype Design Space by System
6.5 Studies of Weight (Mass) Irregularity [V2] <\/td>\n<\/tr>\n
137<\/td>\n6.5.1 Archetype Descriptions
6.5.2 Results <\/td>\n<\/tr>\n
139<\/td>\n6.5.3 Conclusion and Recommendations <\/td>\n<\/tr>\n
140<\/td>\n6.6 Studies of Soft- and Weak-Story Irregularities [V1\/V5]
6.6.1 Archetype Descriptions <\/td>\n<\/tr>\n
142<\/td>\n6.6.2 Results <\/td>\n<\/tr>\n
144<\/td>\n6.6.3 Conclusion and Recommendations
6.7 Studies of Strong-Column\/Weak-Beam Design Provisions [V6] <\/td>\n<\/tr>\n
145<\/td>\n6.7.1 Archetype Descriptions <\/td>\n<\/tr>\n
146<\/td>\n6.7.2 Results <\/td>\n<\/tr>\n
149<\/td>\n6.7.3 Conclusion and Recommendations
6.8 Studies of Gravity-Induced Lateral Demands [V7]
6.8.1 Previous Studies <\/td>\n<\/tr>\n
150<\/td>\n6.8.2 Archetype Descriptions
6.8.3 Results <\/td>\n<\/tr>\n
152<\/td>\n6.8.4 Limitations of the GILD Studies <\/td>\n<\/tr>\n
153<\/td>\n6.9 Overview of Conclusions and Recommendations <\/td>\n<\/tr>\n
154<\/td>\n6.9.1 Weight (Mass) Irregularity [V2]
6.9.2 Soft\/Weak Story Irregularity [V1\/V5] <\/td>\n<\/tr>\n
155<\/td>\n6.9.3 Strong-Column\/Weak-Beam [V6]
6.9.4 Gravity-Induced Lateral Demand [V7] <\/td>\n<\/tr>\n
157<\/td>\nCh7: Discussion of Other Irregularities [H2, H3, H4, H5, V3, V4, V8]
7.1 Reentrant Corner [H2] Irregularity <\/td>\n<\/tr>\n
161<\/td>\n7.2 Diaphragm Discontinuity [H3] Irregularity <\/td>\n<\/tr>\n
163<\/td>\n7.3 Out-of-Plane Offset [H4] and In-Plane Discontinuity [V4] Irregularities <\/td>\n<\/tr>\n
164<\/td>\n7.3.1 Impact of Out-Of-Plane and In-Plane Discontinuities in RC Wall Buildings <\/td>\n<\/tr>\n
166<\/td>\n7.4 Nonparallel System [H5] Irregularity <\/td>\n<\/tr>\n
167<\/td>\n7.5 Vertical Geometric [V3] Irregularity
7.6 Wall Discontinuity [V8] Irregularity <\/td>\n<\/tr>\n
168<\/td>\n7.6.1 Discontinuities Associated with Initiation or Termination of Stacked Openings in Walls <\/td>\n<\/tr>\n
169<\/td>\n7.6.2 Discontinuities Associated with Increased Wall Area to Capture Forces Introduced by New Structural Elements <\/td>\n<\/tr>\n
171<\/td>\nCh8: Recommended Improvements
8.1 Codes and Standards
8.1.1 NEHRP Recommended Provisions and ASCE\/SEI 7-16
Revised Triggers and Prohibitions <\/td>\n<\/tr>\n
172<\/td>\nRevised Modeling Requirements <\/td>\n<\/tr>\n
174<\/td>\nRevised Design Requirements <\/td>\n<\/tr>\n
175<\/td>\nImproved Commentary and Other Clarifications <\/td>\n<\/tr>\n
176<\/td>\n8.1.2 ASCE\/SEI 41-17
8.2 Future Studies and Development
8.2.1 Explicit Collapse Assessment Improvements <\/td>\n<\/tr>\n
177<\/td>\n8.2.2 Design Sensitivity Studies <\/td>\n<\/tr>\n
178<\/td>\n8.2.3 Strong-Column\/Weak-Beam Requirements
8.2.4 More Detailed Considerations <\/td>\n<\/tr>\n
181<\/td>\nAppA: Torsion Studies
A.1 Development and Validation of Simplified 3D Models
A.1.1 Nonlinear Backbones for Modeling the Seismic-Force-Resisting System <\/td>\n<\/tr>\n
184<\/td>\nA.1.2 Scaling of Nonlinear Backbones <\/td>\n<\/tr>\n
185<\/td>\nA.1.3 3D Modeling Approach
A.1.4 Validation of Single-Story 3D Models <\/td>\n<\/tr>\n
187<\/td>\nA.2 Torsional Strength Irregularity <\/td>\n<\/tr>\n
188<\/td>\nA.3 Importance of Checking Drift and Stability Requirements at the Building\u2019s Edge for Torsionally Irregular Buildings <\/td>\n<\/tr>\n
189<\/td>\nA.4 Rationale for Triggering Type 1a Torsional Irregularity When >75% of Strength is on One Side of the CM <\/td>\n<\/tr>\n
191<\/td>\nA.5 Application of 5% Mass Offsets to Simulate Accidental Torsion with Modal Response Spectrum Analysis <\/td>\n<\/tr>\n
193<\/td>\nA.6 Explanation of Why Some Trends in the Results Plots Double Back on Themselves <\/td>\n<\/tr>\n
195<\/td>\nAppB: Concrete Wall Studies
B.1 Past Investigations of Concrete Walls with Irregularities
B.1.1 Damage of Concrete Walls with Irregularities in Past Earthquakes <\/td>\n<\/tr>\n
200<\/td>\nB.1.2 Quantification of Vertical Discontinuities in Concrete Walls Using Field Data <\/td>\n<\/tr>\n
202<\/td>\nB.1.3 Laboratory Test Results for Concrete Walls with Vertical Irregularities <\/td>\n<\/tr>\n
204<\/td>\nB.2 Investigation of Vertical Irregularity Using Nonlinear Continuum Analysis <\/td>\n<\/tr>\n
206<\/td>\nB.3 RC Wall Building Design Process <\/td>\n<\/tr>\n
207<\/td>\nB.3.1 Building Prototype <\/td>\n<\/tr>\n
209<\/td>\nB.3.2 Wall Design <\/td>\n<\/tr>\n
210<\/td>\nB.3.3 Design of Wall Panel Zone <\/td>\n<\/tr>\n
211<\/td>\nB.3.4 Design of Coupling Beams <\/td>\n<\/tr>\n
212<\/td>\nB.3.5 RC Wall Building Design Summaries <\/td>\n<\/tr>\n
216<\/td>\nB.4 Modeling Wall Response
B.4.1 ATENA <\/td>\n<\/tr>\n
218<\/td>\nB.4.2 OpenSees <\/td>\n<\/tr>\n
222<\/td>\nB.5 Preliminary Analyses to Investigate Modeling Assumptions and Identify a Preferred Modeling Approach <\/td>\n<\/tr>\n
223<\/td>\nB.5.1 Modeling Assumptions Employed for OpenSees and ATENA Analyses <\/td>\n<\/tr>\n
224<\/td>\nB.5.2 Pushover Analyses to Compare OpenSees and ATENA Models <\/td>\n<\/tr>\n
226<\/td>\nB.5.3 Dynamic Analyses to Compare OpenSees Displacement-Based and Force-Based Beam-Column Element Models <\/td>\n<\/tr>\n
227<\/td>\nB.5.4 Dynamic Analyses to Compare Models Comprising OpenSees Displacement-Based Beam-Column Elements and SFI-MVLEM <\/td>\n<\/tr>\n
231<\/td>\nB.5.5 Identification of a Preferred Modeling Approach for Assessing the Impact of Vertical Irregularities on the Collapse Risk Posed by RC Wall Buildings <\/td>\n<\/tr>\n
232<\/td>\nB.6 Analysis Results <\/td>\n<\/tr>\n
247<\/td>\nAppC: Steel Moment Frame Studies
C.1 Steel Moment Frame Baseline Designs <\/td>\n<\/tr>\n
249<\/td>\nC.1.1 Low Seismicity Zone (SDC Bmax) \u2013 Steel Ordinary Moment Frame Design <\/td>\n<\/tr>\n
251<\/td>\nC.1.1.1 3-Story OMF Building <\/td>\n<\/tr>\n
253<\/td>\nC.1.1.2 9-Story OMF Building <\/td>\n<\/tr>\n
256<\/td>\nC.1.1.3 20-Story OMF Building <\/td>\n<\/tr>\n
258<\/td>\nC.1.2 High Seismicity Zone (SDC Dmax) \u2013 Steel Special Moment Frame Design <\/td>\n<\/tr>\n
261<\/td>\nC.1.2.1 3-Story SMF Building <\/td>\n<\/tr>\n
262<\/td>\nC.1.2.2 9-Story SMF Building <\/td>\n<\/tr>\n
265<\/td>\nC.1.2.3 20-Story SMF Building <\/td>\n<\/tr>\n
271<\/td>\nC.2 Summary of Steel Moment Frame Results <\/td>\n<\/tr>\n
279<\/td>\nAppD: Concrete Moment Frame Studies
D.1 Concrete Moment Frame Baseline Designs <\/td>\n<\/tr>\n
280<\/td>\nD.1.1 Low Seismicity Zone (SDC Bmax) \u2013 RC Ordinary Moment Frame Design
D.1.1.1 4-Story OMF Building <\/td>\n<\/tr>\n
282<\/td>\nD.1.1.2 8-Story OMF Building
D.1.1.3 12-Story OMF Building <\/td>\n<\/tr>\n
285<\/td>\nD.1.2 High Seismicity Zone (SDC Dmax) \u2013 RC Special Moment Frame Design
D.1.2.1 4-Story SMF <\/td>\n<\/tr>\n
287<\/td>\nD.1.2.2 8-Story SMF <\/td>\n<\/tr>\n
289<\/td>\nD.1.2.3 12-Story SMF <\/td>\n<\/tr>\n
292<\/td>\nD.1.2.4 20-Story SMF <\/td>\n<\/tr>\n
296<\/td>\nD.2 Summary of Reinforced Concrete Moment Frame Results <\/td>\n<\/tr>\n
301<\/td>\nAppE: Results of Quality Control Review
E.1 Overview of Quality Control Review
E.2 Results from Quality Control Review
E.2.1 Torsional Studies <\/td>\n<\/tr>\n
302<\/td>\nE.2.2 Concrete Shear Wall Studies <\/td>\n<\/tr>\n
303<\/td>\nE.2.3 Steel Moment Frame Studies <\/td>\n<\/tr>\n
304<\/td>\nE.2.4 Concrete Moment Frame Studies <\/td>\n<\/tr>\n
307<\/td>\nAppF: Global Behavior of Buildings with Mass Irregularity [V2]
F.1 Background <\/td>\n<\/tr>\n
308<\/td>\nF.2 Expanded Design Space and Assessment Method
F.2.1 Expanded Design Space <\/td>\n<\/tr>\n
313<\/td>\nF.2.2 Assessment Method for Global Behavior
F.3 Findings <\/td>\n<\/tr>\n
315<\/td>\nF.4 Recommendations <\/td>\n<\/tr>\n
327<\/td>\nAppG: Story Stiffness and Strength Calculation <\/td>\n<\/tr>\n
328<\/td>\nG.1 Background <\/td>\n<\/tr>\n
329<\/td>\nG.2 Calculation of Story Stiffness
G.2.1 Simple Hand Calculations and Their Limitations <\/td>\n<\/tr>\n
332<\/td>\nG.2.2 SEAOC Story Drift Ratio Method <\/td>\n<\/tr>\n
333<\/td>\nG.2.3 Apparent Story Stiffness Method <\/td>\n<\/tr>\n
334<\/td>\nG.3 Calculation of Story Strength <\/td>\n<\/tr>\n
335<\/td>\nG.4 Recommendations
G.4.1 Calculation of Story Stiffness
G.4.2 Calculation of Story Strength <\/td>\n<\/tr>\n
337<\/td>\nAppH: Steel Systems Not Specifically Detailed for Seismic Resistance
H.1 Background <\/td>\n<\/tr>\n
338<\/td>\nH.2 Configuration
H.3 Proportioning
H.3.1 Strong-Column\/Weak-Beam Requirement
H.3.2 Panel Zone Proportioning <\/td>\n<\/tr>\n
339<\/td>\nH.3.3 Connection Design Philosophy
H.4 Member Local Buckling and Lateral Bracing Requirements <\/td>\n<\/tr>\n
340<\/td>\nH.5 Less Stringent Material Specifications and Inspection Requirements <\/td>\n<\/tr>\n
341<\/td>\nSymbols <\/td>\n<\/tr>\n
345<\/td>\nGlossary
Definitions <\/td>\n<\/tr>\n
347<\/td>\nReferences <\/td>\n<\/tr>\n
361<\/td>\nProject Participants
FEMA Oversight
ATC Management and Oversight
Project Technical Committee
Project Review Panel <\/td>\n<\/tr>\n
362<\/td>\nWorking Group <\/td>\n<\/tr>\n
363<\/td>\nWorkshop Participants <\/td>\n<\/tr>\n
366<\/td>\nCatalog No. 18166-1 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

FEMA P-2012, Assessing Seismic Performance Irregularities<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
FEMA<\/b><\/a><\/td>\n2018<\/td>\n366<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":334537,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2743],"product_tag":[],"class_list":{"0":"post-334532","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-fema","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/334532","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/334537"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=334532"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=334532"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=334532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}