Atch_1h_UFC_3-310-04,_Seismic_Design_for_Buildings.pdf

UFC 3-310-04

1 June 2013

Change 1, 20 June 2016

UNIFIED FACILITIES CRITERIA (UFC)

SEISMIC DESIGN OF BUILDINGS

APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED

SEISMIC DESIGN OF BUILDINGS

Any copyrighted material included in this UFC is identified at its point of use.

Use of the copyrighted material apart from this UFC must have the permission of the copyright holder.

U.S. ARMY CORPS OF ENGINEERS (Preparing Activity)

NAVAL FACILITIES ENGINEERING COMMAND

AIR FORCE CIVIL ENGINEER SUPPORT CENTER

Record of Changes (changes are indicated by \1\ ... /1/)

Change No. Date Location 1 20 June 2016 Adopt 2015 IBC & 2015 IEBC

This UFC supersedes UFC 3-310-04, dated May 1, 2012. The format of this document does not conform to UFC 1-300-01.

FOREWORD

The Unified Facilities Criteria (UFC) system is prescribed by MIL-STD 3007 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies to the Military Departments, the Defense Agencies, and the DoD Field Activities in accordance with USD (AT&L) Memorandum dated 29 May 2002. UFC will be used for all DoD projects and work for other customers where appropriate. All construction outside of the United States is also governed by Status of Forces Agreements (SOFA), Host Nation Funded Construction Agreements (HNFA), and in some instances, Bilateral Infrastructure Agreements (BIA.)

Therefore, the acquisition team must ensure compliance with the most stringent of the UFC, the SOFA, the HNFA, and the BIA, as applicable.

UFC are living documents and will be periodically reviewed, updated, and made available to users as part of the Services’ responsibility for providing technical criteria for military construction. Headquarters, U.S. Army Corps of Engineers (HQUSACE), Naval Facilities Engineering Command (NAVFAC), and the Air Force Civil Engineer Center (AFCEC) are responsible for administration of the UFC system. Defense agencies should contact the preparing service for document interpretation and improvements. Technical content of UFC is the responsibility of the cognizant DoD working group. Recommended changes with supporting rationale should be sent to the respective service proponent office by the following electronic form: Criteria Change Request. The form is also accessible from the Internet sites listed below.

UFC are effective upon issuance and are distributed only in electronic media from the following source:

• Whole Building Design Guide web site http://dod.wbdg.org/.

Hard copies of UFC printed from electronic media should be checked against the current electronic version prior to use to ensure that they are current.

AUTHORIZED BY:

JAMES C. DALTON, P.E. JOSEPH E. GOTT, P.E.

Chief, Engineering and Construction Chief Engineer U.S. Army Corps of Engineers Naval Facilities Engineering Command

SCOTT HARTFORD, Colonel, USAF, P.E. MICHAEL McANDREW Director Director, Facilities Investment and Management Facilities Engineering Center of Excellence AF Civil Engineer Center

Office of the Deputy Under Secretary of Defense (Installations and Environment) http://www.wbdg.org/pdfs/ufc_implementation.pdf http://www.wbdg.org/ccb/browse_cat.php?o=29&c=4 http://dod.wbdg.org/

REVISION SUMMARY SHEET

Subject: UFC 3-310-04, SEISMIC DESIGN OF BUILDINGS Cancels: UFC 3-310-04, SEISMIC DESIGN OF BUILDINGS dated 1 May 2012

Description of Changes:

\1\

• Adopts 2015 IBC (All references to 2012 IBC have been updated to 2015 IBC).

• Adopts 2015 IEBC.

• Adopts ASCE 7-10 Minimum Design Loads for Buildings and Other Structures with

Supplement No. 1 for use in DoD building design and renovation

• Defines DoD specific special Inspection requirements.

/1/

• This UFC adopts the structural design provisions of the 2015 International Building Code (2015 IBC), ASCE 7-10 Minimum Design Loads for Buildings and Other Structures \1\with Supplement No. 1/1/, and ASCE/SEI 41-13 Seismic Evaluation and Retrofit of Existing Buildings for use in DoD building design and renovation.

• Special inspection criteria were moved from this UFC to UFC 3-301-01.

• Site-specific seismic ground motion parameters were removed from this UFC and are now invoked by reference to UFC 3-301-01.

Reasons for Changes:

• The updated UFC is designed to be consistent with and to supplement the guidance contained in the 2015 IBC as modified by UFC 1-200-01.

Impact:

There are negligible cost impacts. However, the following benefit should be realized:

• DoD seismic design, criteria are current with industry codes and standards.

Non-Unified Items: This document contains no non-unified items.

i

TABLE OF CONTENTS

CHAPTER 1 SEISMIC DESIGN FOR BUILDINGS ................................................................................... 1-1

1-1 PURPOSE AND SCOPE .............................................................................................................. 1-1

1-2 APPLICABILITY ............................................................................................................................ 1-1

1-3 CONFLICTS AND MODIFICATIONS ........................................................................................... 1-1

1-4 IMPLEMENTATION ...................................................................................................................... 1-2

1-5 STRUCTURE OF THE UFC ......................................................................................................... 1-2 1-6 COMMENTARY ............................................................................................................................ 1-3

1-7 PROCEDURES FOR APPLYING UFC 3-310-04 FOR STRUCTURAL DESIGN ........................ 1-3

1-7.1 Progressive Collapse Analysis and Design .................................................................................. 1-4

1-8 APPLYING UFC 3-310-04 FOR DESIGN OF NONSTRUCTURAL COMPONENTS ................. 1-4

1-9 ACRONYMS AND ABBREVIATIONS .............................................................................................. 1-4

CHAPTER 2 2015 IBC MODIFICATIONS FOR SEISMIC DESIGN OF DOD BUILDINGS ...................... 2-1 2-202 DEFINITIONS ............................................................................................................................... 2-2

2-1603 CONSTRUCTION DOCUMENTS ............................................................................................... 2-3

2-1603.1.5 Earthquake Design Data [Replacement] Item 3 ..................................................................... 2-3

2-1603.1.9 [ADDITION] Systems/Components Requiring Special Inspection for Seismic Resistance.... 2-3

2-1604.5 [Supplement] Risk Category ....................................................................................................... 2-3 2-1612 FLOOD LOADS .......................................................................................................................... 2-3

2-1612.6 [Addition] Tsunami ...................................................................................................................... 2-3

2-1613 Earthquake Loads ....................................................................................................................... 2-3

2-1613.1 [Supplement] Scope ................................................................................................................... 2-3

2-1613.6 [Addition] Special Inspections ..................................................................................................... 2-4

2-1613.7 [Addition] Procedure for Determining MCER and Design Spectral Response Accelerations ..... 2-4 2-11.1.2 [Supplement] Scope .................................................................................................................... 2-4

2-11.2 DEFINITIONS ................................................................................................................................. 2-5

[Replacement] DESIGNATED SEISMIC SYSTEMS ................................................................................. 2-5

2-11.5.1 [Replacement] Importance Factor ............................................................................................... 2-6

2-11.7 [Supplement] Design Requirements for Seismic Design Category A ............................................. 2-6

2-12.6 [Supplement] Analysis Procedure Selection ................................................................................... 2-6 2-12.8 [Supplement] EQUIVALENT LATERAL FORCE PROCEDURE .................................................... 2-6

2-12.10.2.1 [Replacement] Collector Elements Requiring Load Combinations with Overstrength Factor for Seismic Design Categories C through F .................................................................................................... 2-6

2-12.11.2.1 [Supplement] Wall Anchorage Forces .................................................................................... 2-7

Figure 2-1. Anchorage of Walls to Flexible Diaphragm ............................................................................. 2-7

2-13.1.2 [Supplement] Seismic Design Category ...................................................................................... 2-7 2-13.1.3 [Addition] Component Importance Factor – Item 5 ...................................................................... 2-7 ii

2-13.2.2 [Supplement] Special Certification Requirements for Designated Seismic Systems .................. 2-7 2-13.2.2.1 [Addition] Component Certification and O&M Manual .............................................................. 2-8

2-13.2.2.2 [Addition] Component Identification Nameplate ....................................................................... 2-9

2-13.2.7 [Supplement] Construction Documents ....................................................................................... 2-9

2-13.3.2 [Supplement] Seismic Relative Displacements ........................................................................... 2-9

2-13.5.6 [Supplement] Suspended Ceilings............................................................................................. 2-10

2-13.5.7 [Supplement] Access Floors ...................................................................................................... 2-11 2-13.6.1 [Supplement] General ................................................................................................................ 2-11

2-13.6.3 [Supplement] Mechanical Components ..................................................................................... 2-11

2-13.6.5.5 [Addition] Additional Requirements – Item 8 .......................................................................... 2-11

2-13.6.10.3 [Supplement] Seismic Switches............................................................................................ 2-11

2-13.6.12 [Addition] Lighting Fixtures in RC IV and V Buildings .............................................................. 2-12

2-13.6.13 [Addition] Bridges, Cranes, and Monorails .............................................................................. 2-12 2-13.6.14 [Addition] Bridges, Cranes, and Monorails for RC IV and V Buildings .................................... 2-12

2-15.4.9.2 [Replacement] Anchors in Masonry ....................................................................................... 2-12

2-15.4.9.3 [Replacement] Post-Installed Anchors in Concrete and Masonry ......................................... 2-13

2-15.5.6.1 [Supplement] General ............................................................................................................. 2-13

2-17 STRUCTURAL TESTS AND SPECIAL INSPECTIONS ............................................................... 2-14 2-21 MASONRY ....................................................................................................................................... 2-14

2-2106 Seismic Design ............................................................................................................................ 2-14

2-2106.2 [Addition] Additional Requirements for Masonry Systems ....................................................... 2-14

2-2106.2.1 [Addition] Minimum Reinforcement for Special or Intermediate Masonry Walls, SDC B-F ... 2-14

2-2106.2.2 [Addition] Joints in Structures assigned to SDC B or Higher ................................................. 2-14

2-2106.2.3 [Addition] Minimum Reinforcement for Deep Flexural Members, SDC B-F .......................... 2-15 2-2106.2.4 [Addition] Coupling Beams in Structures Assigned to SDC D or Higher ............................... 2-15

2-2106.2.5 [Addition] Anchoring to Masonry ............................................................................................ 2-15

2-23 Wood ............................................................................................................................................. 2-16

2-2308 Conventional Light-Frame Construction ................................................................................... 2-16

2-2308.2.6 Risk category limitation [Replacement] ................................................................................ 2-16

CHAPTER 3 ALTERNATE DESIGN PROCEDURE FOR RC IV STRUCTURES ..................................... 3-1 3-1 GENERAL ......................................................................................................................................... 3-1

3-1.1 Overview .......................................................................................................................................... 3-1

3-1.2 Design Review Panel ....................................................................................................................... 3-2

3-2 DEFINITIONS ................................................................................................................................... 3-2

3-2.1 General ............................................................................................................................................ 3-2

3-3 CONSTRUCTION DOCUMENTS ..................................................................................................... 3-3 3-3.1 General ............................................................................................................................................ 3-3 iii

3-4 GENERAL DESIGN REQUIREMENTS ............................................................................................ 3-3 3-4.1 General ............................................................................................................................................ 3-3

3-5 LOAD COMBINATIONS ................................................................................................................... 3-3

3-5.1 General ............................................................................................................................................ 3-3

3-5.2 Seismic Load Combinations ............................................................................................................ 3-3

3-6 DEAD LOADS ................................................................................................................................... 3-4

3-6.1 General ............................................................................................................................................ 3-4 3-7 LIVE LOADS ..................................................................................................................................... 3-4

3-7.1 General ............................................................................................................................................ 3-4

3-8 SNOW LOADS .................................................................................................................................. 3-4

3-8.1 General ............................................................................................................................................ 3-4

3-9 WIND LOADS ................................................................................................................................... 3-4

3-9.1 General ............................................................................................................................................ 3-4 3-10 SOIL LATERAL LOADs .................................................................................................................. 3-4

3-10.1 General .......................................................................................................................................... 3-4

3-11 RAIN LOADS .................................................................................................................................. 3-5

3-11.1 General .......................................................................................................................................... 3-5

3-12 FLOOD LOADS .............................................................................................................................. 3-5 3-12.1 General .......................................................................................................................................... 3-5

3-13 ICE LOADS—ATMOSPHERIC ICING ............................................................................................ 3-5

3-13.1 General .......................................................................................................................................... 3-5

3-14 EARTHQUAKE LOADS – GENERAL ............................................................................................. 3-5

3-14.1 Scope ............................................................................................................................................. 3-5

3-14.1.1 Additions, Change of Occupancy and Alterations to Existing Buildings ..................................... 3-5 3-14.4 Quality Assurance .......................................................................................................................... 3-5

3-14.5 Seismic and Wind .......................................................................................................................... 3-5

3-15 EARTHQUAKE LOADS – SITE GROUND MOTION ..................................................................... 3-5

3-15.1 General Procedure for Determining Design Spectral Response Accelerations ............................ 3-5

3-15.1.1 Site Class Definition .................................................................................................................... 3-6

3-15.1.2 Site Coefficients and Adjusted Earthquake Spectral Response Acceleration Parameters ........ 3-6 3-15.2 Site-specific Response Analysis for Determining Ground Motion Accelerations .......................... 3-7

3-15.3 Ground Motion Hazard Analysis .................................................................................................... 3-7

3-16 EARTHQUAKE LOADS – CRITERIA SECTION ............................................................................ 3-7

3-16.1 Structural Design Criteria ............................................................................................................... 3-7

3-16.2 Importance Factors ......................................................................................................................... 3-7

3-16.3 Site Limitations .............................................................................................................................. 3-8 3-16.4 Building Configuration .................................................................................................................... 3-8 iv

3-16.5 Analysis Procedures ...................................................................................................................... 3-8 3-16.5.1 Nonlinear Analysis ...................................................................................................................... 3-8

3-16.5.1.1 Nonlinear Static Procedure ...................................................................................................... 3-8

3-16.5.1.2 Nonlinear Dynamic Procedure ................................................................................................. 3-9

3-16.5.2 Site Ground Motions ................................................................................................................... 3-9

3-17 EARTHQUAKE LOADS – MINIMUM DESIGN LATERAL FORCE AND RELATED EFFECTS ..... 3-10

3-17.1 Seismic Load Effect, E ................................................................................................................. 3-10 3-17.2 Redundancy ................................................................................................................................. 3-10

3-17.3 Deflection and Drift Limits ............................................................................................................ 3-10

3-17.3.1 Allowable Story Drift ................................................................................................................. 3-10

3-17.3.1.1 Life Safety Performance Objective ........................................................................................ 3-10

3-17.3.1.2 Immediate Occupancy Performance Objective ..................................................................... 3-11

3-17.3.2 Drift Determination and P-Delta Effects .................................................................................... 3-11 3-17.3.2.1 Drift and Deflection Determination for Nonlinear Static Procedure ....................................... 3-11

3-17.3.2.2 Drift and Deflection Determination for Nonlinear Dynamic Procedure .................................. 3-11

3-17.3.2.3 P-Delta Effects for Nonlinear Static Procedure and Nonlinear Dynamic Procedure ............. 3-11

3-17.4 Seismic Force-resisting Systems ................................................................................................. 3-12

3-17.4.1 Permitted Seismic Force-resisting Systems ............................................................................. 3-12 3-17.4.2 Structural Design Requirements ............................................................................................... 3-12

3-17.4.2.1 Dual Systems ......................................................................................................................... 3-12

3-17.4.2.2 Combinations of Framing Systems ........................................................................................ 3-12

3-17.4.2.3 Interaction Effects .................................................................................................................. 3-12

3-17.4.2.4 Deformational Compatibility ................................................................................................... 3-12 3-17.4.3 Response Modification (R), System Overstrength (Ω0), Deflection Amplification (Cd) Factors 3-13

3-17.4.4 Member Strength ...................................................................................................................... 3-13

3-18 DYNAMIC ANALYSIS PROCEDURES FOR THE SEISMIC DESIGN OF BUILDINGS .............. 3-13

3-18.1 General ........................................................................................................................................ 3-13

3-19 EARTHQUAKE LOADS, SOIL-STRUCTURE INTERACTION EFFECTS ................................... 3-13

3-19.1 Analysis Procedure ...................................................................................................................... 3-13

3-20 SEISMIC DESIGN, DETAILING, AND STRUCTURAL COMPONENT LOAD EFFECTS ........... 3-13 3-20.1 Structural Component Design and Detailing ............................................................................... 3-13

3-20.2 Structural Integrity ........................................................................................................................ 3-13

3-20.3 Soils and Foundations ................................................................................................................. 3-13

3-21 SEISMIC DESIGN REQUIREMENTS FOR NONSTRUCTURAL COMPONENTS ..................... 3-14

3-21.1 Component Design ...................................................................................................................... 3-14

3-21.2 Performance Objectives .............................................................................................................. 3-14 3-21.2.1 Life Safety Performance Objective for Nonstructural Components .......................................... 3-14 v

3-21.2.2 Immediate Occupancy Performance Objective for Nonstructural Components ....................... 3-14 3-21.3 Modification of ASCE 7-10 for Life Safety Design ....................................................................... 3-14

3-21.3.1 Ground Motion Parameters for Determination of Life Safety Seismic Forces ........................... 3-14

3-21.3.2 Nonlinear Static Procedure ....................................................................................................... 3-14

3-21.3.3 Nonlinear Dynamic Procedure .................................................................................................. 3-14

3-21.3.4 Component Importance Factors ............................................................................................... 3-15

3-21.4 Modification of ASCE 7-10 for Immediate Occupancy Design .................................................... 3-15 3-21.4.1 Ground Motion Parameters for Determination of IO Seismic Forces ....................................... 3-15

3-21.4.2 Nonlinear Static Procedure ....................................................................................................... 3-15

3-21.4.3 Nonlinear Dynamic Procedure .................................................................................................. 3-15

3-21.4.4 Component Importance Factors ............................................................................................... 3-15

CHAPTER 4 DESIGN FOR ENHANCED PERFORMANCE OBJECTIVES: RC V ................................. 4-19

4-1601 GENERAL ................................................................................................................................. 4-19 4-1601.1 Overview .................................................................................................................................. 4-19

4-1601.2 Design Review Panels ............................................................................................................. 4-19

4-1601.2.1 Structural Design Review Panel ........................................................................................... 4-19

4-1601.2.2 Nonstructural Component Design Review Panel ................................................................. 4-20

4-1602 DEFINITIONS AND NOTATIONS ............................................................................................ 4-20 4-1602.1 General .................................................................................................................................... 4-20

4-1603 CONSTRUCTION DOCUMENTS ............................................................................................. 4-21

4-1603.1 General .................................................................................................................................... 4-21

4-1604 GENERAL DESIGN REQUIREMENTS .................................................................................... 4-21

4-1604.1 General .................................................................................................................................... 4-21

4-1604.10 Wind and Seismic Detailing ................................................................................................... 4-21 4-1605 LOAD COMBINATIONS ........................................................................................................... 4-21

4-1605.1 General .................................................................................................................................... 4-21

4-1606 DEAD LOADS ........................................................................................................................... 4-22

4-1606.1 General .................................................................................................................................... 4-22

4-1607 LIVE LOADS ............................................................................................................................. 4-22

4-1607.1 General .................................................................................................................................... 4-22 4-1608 SNOW AND ICE LOADS .......................................................................................................... 4-22

4-1608.1 General .................................................................................................................................... 4-22

4-1609 WIND LOADS ........................................................................................................................... 4-22

4-1609.1 General .................................................................................................................................... 4-22

4-1610 SOIL LATERAL LOADS ........................................................................................................... 4-23

4-1610.1 General .................................................................................................................................... 4-23 4-1611 RAIN LOADS ............................................................................................................................ 4-23 vi

4-1611.1 General .................................................................................................................................... 4-23 4-1612 FLOOD LOADS ........................................................................................................................ 4-23

4-1612.1 General .................................................................................................................................... 4-23

4-1612.2 Tsunami .................................................................................................................................... 4-23

4-1613 EARTHQUAKE LOADS ............................................................................................................ 4-23

4-1613.1 Existing Buildings ...................................................................................................................... 4-23

4-11 SEISMIC DESIGN CRITERIA ...................................................................................................... 4-24 4-11.1 Structural Design Criteria ............................................................................................................. 4-24

4-11.4 SEISMIC GROUND MOTION VALUES ...................................................................................... 4-24

4-11.4.1 Development of MCE Spectral Response Accelerations and Response History Criteria ........ 4-24

4-11.4.5 Design Response Spectrum ..................................................................................................... 4-26

4-11.4.5.1 Design Horizontal Response Spectrum ................................................................................. 4-26

4-11.4.5.2 Design Vertical Response Spectrum ..................................................................................... 4-26 4-11.5 IMPORTANCE FACTOR AND RISK CATEGORY ...................................................................... 4-26

4-11.5-1 Importance Factor..................................................................................................................... 4-26

4-11.6 SEISMIC DESIGN CATEGORY .................................................................................................. 4-27

4-11.7 DESIGN REQUIREMENTS FOR SEISMIC DESIGN CATEGORY A ......................................... 4-27

4-11.8 GEOLOGICAL HAZARDS AND GEOTECHNICAL INVESTIGATION ........................................ 4-27 4-11.8.1 Site Limitations for Risk Category V ......................................................................................... 4-27

4-12 SEISIMIC DESIGN REQUIREMENTS FOR BUILDING STRUCTURES ..................................... 4-27

4-12.2 STRUCTURAL SYSTEM SELECTION ....................................................................................... 4-27

4-12.2.1 Selections and Limitations ........................................................................................................ 4-27

4-12.2.2 and 4-12.2.3 Combinations of Framing Systems ...................................................................... 4-27

4-12.2.3.1 and 4-12.2.3.2 R, Cd, and Ω0 Values for Vertical and Horizontal Combinations .................... 4-27 4-12.3 DIAPHRAGM FLEXIBILITY, CONFIGURATION IRREGULARITIES, AND REDUNDANCY ..... 4-28

4-12.3.2 Irregular or Regular Classification and 4-12.3.3 Limitations and Additional Requirements for Systems with Structural Irregularities ....................................................................................................... 4-28

4-12.3.4 Redundancy .............................................................................................................................. 4-28

4-12.4.4 Minimum Upward force for Horizontal Cantilevers ................................................................... 4-28

4-12.5 DIRECTION OF LOADING .......................................................................................................... 4-28 4-12.5.1 Direction of Loading Criteria ..................................................................................................... 4-28

4-12.6 ANALYSIS PROCEDURE SELECTION ...................................................................................... 4-29

4-12.6.1 General Requirements .............................................................................................................. 4-29

4-12.6.2 Horizontal and Vertical Force Determination ............................................................................ 4-29

4-12.6.3 Member Forces ......................................................................................................................... 4-30

4-12.6.3.1 Low Seismicity Applications ................................................................................................... 4-30 4-12.6.3.2 Moderate Seismicity Applications .......................................................................................... 4-30 vii

4-12.6.3.3 High to Very High Seismicity Applications ............................................................................. 4-30 4-12.8 EQUIVALENT LATERAL FORCE PROCEDURE ....................................................................... 4-31

4-12.9 MODAL RESPONSE SPECTRUM ANALYSIS ........................................................................... 4-31

4-12.9.2 Modal Response Parameters ................................................................................................... 4-31

4-12.10 DIAPHRAGMS, CHORDS, AND COLLECTORS ...................................................................... 4-31

4-12.10.1.1 Diaphragm Design Forces ................................................................................................... 4-32

4-12.11 STRUCTURAL WALLS AND THEIR ANCHORAGE ................................................................. 4-32 4-12.11.1 Design for Out-of-Plane Forces and 4-12.11.2 Anchorage of Structural Walls and Transfer of Design Forces into Diaphragms ............................................................................................................... 4-32

4-12.12 DRIFT AND DEFORMATION .................................................................................................... 4-32

4-12.12.1 Story Drift Limit ....................................................................................................................... 4-32

4-12.12.5 Deformational Compatibility .................................................................................................... 4-32

4-13 SEISMIC DESIGN REQUIREMENTS FOR NONSTRUCTURAL COMPONENTS ..................... 4-32 4-13.1 GENERAL .................................................................................................................................... 4-32

4-13.1.1 Scope ........................................................................................................................................ 4-32

4-13.2 GENERAL DESIGN REQUIREMENTS ....................................................................................... 4-33

4-13.2.1.1 General Requirements ........................................................................................................... 4-33

4-13.2.1.2 Mission-Critical Level 1 Components .................................................................................... 4-33 4-13.2.1.3 Mission-Critical Level 2 Components .................................................................................... 4-33

4-13.2.1.4 Non-Mission-Critical Components .......................................................................................... 4-33

4-13.2.2.1 Component Qualification Documentation ............................................................................... 4-34

4-13.3 SEISMIC DEMANDS ON NONSTRUCTURAL COMPONENTS ................................................ 4-35

4-13.3.1 Seismic Design Force ............................................................................................................... 4-35

4-13.7 RESPONSE ANALYSIS PROCEDURES FOR ARCHITECTURAL, MECHANICAL, AND

ELECTRICAL COMPONENTS ................................................................................................................ 4-36

4-13.7.1 General ..................................................................................................................................... 4-36

4-13.7.2 Dynamic Coupling Effects ......................................................................................................... 4-36

4-13.7.3 Modeling Flooring Systems ...................................................................................................... 4-36

4-13.7.4 In-structure Response Spectra ................................................................................................. 4-36

4-13.8 COMPONENT QUALIFICATION DOCUMENTATION AND O&M MANUAL .............................. 4-36 4-13.9 COMPONENT IDENTIFICATION NAMEPLATE ......................................................................... 4-37

4-1701 GENERAL ................................................................................................................................. 4-37

4-1701.1 Scope ....................................................................................................................................... 4-37

4-1801 SOILS AND FOUNDATIONS ................................................................................................... 4-37

4-1801.1 Foundation Uplift and Rocking ................................................................................................. 4-37

CHAPTER 5 SEISMIC EVALUATION AND RETROFIT OF EXISTING BUILDINGS ............................... 5-1 5-1 GENERAL ............................................................................................................................................ 5-1 viii

5-2 MODIFICATIONS TO RP 8 ................................................................................................................. 5-2 5-2.1 Performance Objectives for Evaluation and Retrofit using ASCE/SEI 41-13 ................................... 5-2

5-2.1.1 Buildings Assigned to Risk Category I, II, III, or IV ........................................................................ 5-2

5-2.1.2 Buildings Assigned to Risk Category V ......................................................................................... 5-4

5-2.2 Exemptions and Benchmark Buildings ............................................................................................. 5-4

5-2.2.1 Exemptions .................................................................................................................................... 5-4

5-2.2.2 Benchmark Buildings ..................................................................................................................... 5-5 5-2.2.3 Acquisition ...................................................................................................................................... 5-5

5-3 MODIFICATIONS TO 2015 IEBC ....................................................................................................... 5-5

5-402.1.1 [Addition] Combined Projects .................................................................................................... 5-5

5-402.4 [Replacement] Existing Structural Elements Carrying Lateral Load ............................................. 5-5

5-403 [Supplement] ALTERATIONS .......................................................................................................... 5-6

5-404 [Supplement] REPAIRS ................................................................................................................... 5-6 5-407 CHANGE OF OCCUPANCY ........................................................................................................... 5-7

5-408 HISTORIC BUILDINGS ................................................................................................................... 5-7

APPENDIX A REFERENCES ................................................................................................................... A-1

APPENDIX B GUIDANCE FOR SEISMIC DESIGN OF NONSTRUCTURAL COMPONENTS ............... B-1

B-1 INTRODUCTION ............................................................................................................................. B-1 B-1.1 Design Criteria ................................................................................................................................ B-1

B-1.2 Walk-down Inspections and Seismic Mitigation for Buildings in Risk Categories IV and V ........... B-1

B-1.2.1 General Guidance ....................................................................................................................... B-1

B-1.2.2 Periodic Post-commissioning Walk-down Inspections ................................................................. B-2

B-2 ARCHITECTURAL COMPONENTS ............................................................................................... B-2

B-2.1 Reference ....................................................................................................................................... B-2 B-2.2 General ........................................................................................................................................... B-2

B-2.3 Typical Architectural Components .................................................................................................. B-2

B-2.3.1 Nonstructural Walls ..................................................................................................................... B-3

B-2.3.2 Curtain Walls and Filler Walls ..................................................................................................... B-3

B-2.3.3 Partial Infill Walls ......................................................................................................................... B-3

B-2.3.4 Precast Panels ............................................................................................................................ B-4 B-2.3.5 Masonry Veneer .......................................................................................................................... B-4

B-2.3.6 Rigid Partition Walls .................................................................................................................... B-5

B-2.3.7 Nonrigid Partition Walls ............................................................................................................... B-5

B-2.3.8 Suspended Ceilings .................................................................................................................... B-6

B-3 MECHANICAL AND ELECTRICAL COMPONENTS ...................................................................... B-7

B-3.2 Component Support ....................................................................................................................... B-7 B-3.2.1 References .................................................................................................................................. B-7 ix

B-3.2.2 Base-mounted Equipment in RCs IV and V ................................................................................ B-7 B-3.2.3 Suspended Equipment ................................................................................................................ B-7

B-3.2.4 Supports and Attachments for Piping .......................................................................................... B-8

B-3.3 Stacks (Exhaust) Associated with Buildings ................................................................................ B-15

B-3.3.1 References ................................................................................................................................ B-15

B-3.3.2 General ...................................................................................................................................... B-15

B-3.3.3 Cantilever Stacks ....................................................................................................................... B-15 B-3.3.4 Guyed Stacks ............................................................................................................................ B-16

B-3.4 Elevators ....................................................................................................................................... B-16

B-3.4.1 References ................................................................................................................................ B-16

B-3.4.2 General ...................................................................................................................................... B-16

B-3.4.3 Retainer Plates .......................................................................................................................... B-18

B-3.4.4 Counterweight Tie Brackets ...................................................................................................... B-18 B-3.4.5 Force Calculation ....................................................................................................................... B-18

B-3.5 Lighting Fixtures in Buildings ........................................................................................................ B-20

B-3.5.1 Reference .................................................................................................................................. B-20

B-3.5.2 General ...................................................................................................................................... B-20

B-3.6 Bridges, Cranes, and Monorails ................................................................................................... B-20 B-3.6.1 References ................................................................................................................................ B-20

B-3.6.2 General ...................................................................................................................................... B-21

APPENDIX C MECHANICAL AND ELECTRICAL COMPONENT CERTIFICATION .............................. C-1

C-1 COMPONENT CERTIFICATION .................................................................................................... C-1

C-1.1 General ........................................................................................................................................... C-1

C-1.1.1 References .................................................................................................................................. C-1 C-1.1.2 Analytical Certification ................................................................................................................. C-1

C-1.1.3 Certification Based on Testing .................................................................................................... C-2

C-1.1.4 Additional Certification Methods .................................................................................................. C-3

C-1.1.4.1 Earthquake Experience Data ................................................................................................... C-3

C-1.1.4.2 Qualification Testing Database ................................................................................................ C-3

C-1.1.4.3 CERL Equipment Fragility and Protection Procedure .............................................................. C-4 C-1.1.4.4 Qualification of Power Substation Equipment .......................................................................... C-4

TABLES

Table 2-1 Replacement for ASCE 7-10 Table 12.2-1 Design Coefficients and Factors for Basic Seismic Force-Resisting Systems ......................................................................................................................... 2-17

Table 2-2 Replacement for ASCE 7-10 Table 12.6-1 Permitted Analytical Procedures ......................... 2-25 x

Table 3-1 System Limitations for Risk Category IV Buildings Designed Using Alternate Procedure of Chapter 3.................................................................................................................................................. 3-16

Table 4-1 Systems Permitted for Risk Category V Buildings ................................................................... 4-25

Table 5-1 Replacement for ASCE/SEI 41-13 Table 4-6, Benchmark Buildings ..................................