ASCE 41 Seismic Rehabilitation of Existing Buildings

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "ASCE 41 Seismic Rehabilitation of Existing Buildings"

Transcription

1 ASCE 41 Seismic Rehabilitation of Existing Buildings

2 Presentation Topics: 1. How to define a Rehabilitation Objective per ASCE Data Collection and Testing. 3. Analysis Requirements. 4. Modeling. 5. Results Evaluation. 6. Design and Rehabilitation.

3 What is ASCE 41? It is mainly a combination of two FEMA documents: FEMA 356 Technical Requirements for Seismic Rehabilitation of Buildings Superseded by ASCE 41. FEMA 274 NEHRP Commentary on the Guidelines for Seismic Rehabilitation of Buildings. ASCE 31 Seismic Evaluation of Existing Buildings (supporting document).

4 Why use ASCE 41? To improve the seismic performance of any existing structure: ASCE 41 addresses rehabilitation of Architectural, Mechanical, Electrical and Structural systems. ASCE 41 can be used to rehabilitate historic structures. Where performance based rehabilitations are desired.

5 What is required for the Rehabilitation? 1. A Seismic Evaluation must be performed to identify deficiencies to be rehabilitated. ASCE 31 (Formerly FEMA 310) can be used for the evaluation. 2. Define the Rehabilitation Objective - a combination of a Target Building Performance Level, an Earthquake Hazard Level, and an Objective Classification.

6 Target Building Performance: 1. Structural Performance Level: ASCE and Tables C1-2,3, & 4 define six levels: Immediate Occupancy (S-1)( Damage Control Range (S-2) Life Safety (S-3) Limited Safety Range (S-4) Collapse Prevention (S-5) Not Considered (S-6) Tables C1-2 2 to C1-4 4 defines typical damage that accompany these levels.

7 Target Building Performance: Damage increases Primary component Any structural element that resists loads and deformations from seismic loads in addition to gravity loads. Secondary component any element that resists deformations + gravity loads.

8 Target Building Performance: 1. Nonstructural Performance Level: ASCE and Tables C1-5 5 & 6 define five levels: Operational (N-A)( Immediate Occupancy (N-B) Life Safety (N-C) Hazards Reduced (N-D) Not Considered (N-E) Tables C1-5 5 & 6 define typical damage that accompany these levels.

9 Target Building Performance: Damage increases

10 Target Building Performance: Example: N-A N A + S-1 S 1 yields 1-A 1 A Target Building Performance designation.

11 Earthquake Hazard Level: BSE 2 Event: An earthquake with a 2% probability in 50 years of being exceeded. This is an earthquake with a 2500 year reoccurrence period or the MCE as defined in ASCE 7 or IBC. BSE 1 Event: An earthquake with a 10% probability in 50 years of being exceeded. This is an earthquake with a 500 year reoccurrence period or the design event defined in ASCE 7 or IBC. BSE Basic Service Earthquake

12 QUIZ???: What document did ASCE 41 replace? The History of Future Architecture. Texas Architect. FEMA 356.

13 Rehabilitation Objective Classes: 1. Basic Safety Objective typical for Ancillary structures (Office buildings) 2. Enhanced Rehabilitation Objective typical for Critical or Essential structures (Hospitals, Fire stations, Police stations) 3. Limited Rehabilitation Objective (Other less critical structures) You and your client define the req d Class.

14 Rehabilitation Objective:

15 Now that you have defined you Rehabilitation Objective what is next?: Data Collection Analysis Requirements Modeling Results Evaluation Design and Rehabilitation

16 Data Collection: 1. From existing plans OR 2. From a comprehensive testing program Requirements depend on your Rehabilitation Objective and the information available to you from existing plans. Testing is needed to obtain enough information to build the linear or nonlinear model. Material testing to support modeling can be very expensive and time consuming.

17 Data Collection: Knowledge Factor scale factor to reduce element capacity due to uncertainty in element composition. Comprehensive plan required when exist. dwgs don t have enough information.

18 Testing: Wall thickness and wall to column connection check.

19 Testing: Steel coupons and clay tile wall sample for testing. Use ASCE 41 to determine number of tests and locations.

20 Testing: Core drilling of foundation to determine concrete material properties.

21 Testing: Concrete cores for compression testing.

22 Testing: In-situ shear test of a clay tile wall.

23 Testing: 40 x 40 Flexural test of clay tile to determine out of plane bending capacity.

24 Testing: Compression test of clay tile sample.

25 Analysis Options: 1. Linear static - LSP (considered the least accurate) Linear model subject to lateral loading determined by ASCE 41. Similar to IBC / ASCE 7 equivalent lateral force method. Allowed only for structures without irregularities defined in ASCE 41 (basically the same irregularity types defined in ASCE 7). Allowed only for some structures which do not have any irregularities defined for the NSP.

26 Analysis Options: 2. Linear dynamic - LDP (considered more accurate than the LSP) Linear model subjected to response spectral or time history loading. Allowed only for some structures which do not have any irregularities defined for the NSP. V = 0.85 V LSP

27 Analysis Options: 3. Nonlinear static NSP (considered accurate enough for most structures) Structural model with nonlinear material behavior assigned to structural elements pushed to a static displacement defined by ASCE 41. This is called the Target Displacement. Can be required by your client. V = 0.7 V LSP

28 Analysis Options: Required if any of the following are true: Buildings with non-orthogonal orthogonal lateral system. Building with a vertical stiffness irregularity. Building which has a torsional stiffness irregularity in any story. When the first mode period is more than 3.5Ts with Ts = S1 / Ss p. 26. Any structure where the horizontal dimension of any story exceeds that of an adjacent story by 1.4.

29 Analysis Options: 4. Nonlinear time history - NDP (considered the most accurate) Structural model with nonlinear material behavior assigned to structural elements subjected to an earthquake time history loading. Required for certain structures including those when R> R max. R is a parameter related to the structures capacity / the seismic demand. Permitted for all structures and a third party review may be required for this analysis method.

30 QUIZ???: What should you do if the existing plans do not have information on the existing materials in the building? A. Ask the Architect for more fee? B. Initiate a comprehensive testing program? C. Analyze the structure using the Nonlinear Dynamic Procedure?

31 Nonlinear Modeling for NSP: A model that considers material nonlinearity in all elements which comprise it including: 1. Likely plastic hinge regions modeled with FEMA 356 nonlinear hinges. 2. Material stress strain relationships assigned to concrete, steel, masonry, Fiber Reinforced Polymer (FRP) and clay tile structural elements (etc).

32 Material Stress-Strain Relations as defined by ASCE 41: Curve 1 Ductile material with a post yield residual strength (deformation controlled). Curve 2 Ductile material without post yield residual strength (deformation controlled). Curve 3 Brittle material (force controlled). Steel HCT in shear. HCT in compress.

33 Force-Deformation Relations for Concrete (Chapter 6 ASCE 41): Q applied load. Q y yield force. a, b, c, and d defined by ASCE 41. The Engineer must use these relationships along with definitions for points a, b, c, and d to define material nonlinearity.

34 Nonlinear Modeling for NSP: Acceptance Criteria Concrete Hinges: More stringent reqs C conforming transverse steel (ties). NC Nonconforming transverse steel.

35 Nonlinear Modeling for NSP: FEMA 356 Hinges - Concrete:

36 Nonlinear Modeling for NSP: Steel (Type 1 Curve): Ductile Range

37 Nonlinear Modeling for NSP: Concrete (Type 3 Curve): Brittle

38 Nonlinear Modeling for NSP: Clay Tile Shear Only (From Judgment and published research. Allowed by ASCE 41 C1.2) Zero tension Shear yield Comp Shear failure

39 Nonlinear Modeling for NSP: Clay Tile Compression (Type 3 Curve): E 2 = 0.1 E 1 E 2 E 1 Brittle

40 Programs: SAP 2000 Advanced STAAD Pro Nonlinear PERFORM ANSYS These programs are expensive per license and require a strong computer to run the models. Example 12 NL load combos takes 20 hours to solve.

41 QUIZ???: The following represents what kind of material behavior? A. Brittle. B. Elastic-Perfect Plastic. C. Ductile.

42 Nonlinear Modeling Process: For a Nonlinear Static Model you are basically in need of establishing the pushover curve for the structure and verifying that R < R max. This is done by: 1. Defining the Target Displacement for the structure at the control node: C o factor to equate a SDOF system to actual bldg. C 1 inelastic scale factor. T e effective first mode period. C 2 factor for pinched hystersis + cyclic strength degradation.

43 Nonlinear Modeling Process: 2. Push the model, using inertial forces applied to the model in proportion to the first mode shape, to the target displacement and define the Static Pushover Curve for the building. The target displacement will vary for each major direction of the structure. This process is iterative and time consuming.

44 Nonlinear Modeling Process: 3. Define R based on the results of the push over analysis. R is a measure of system stability. R max is a measure of system ductility. C m mass effective in the first mode and V y is the structure first yield force. y yield displacement. d target disp. R max roughly the same as R from ASCE 7. V y structure first yield, W str weight, S a response spectra acceleration at T e.

45 Nonlinear Modeling Process: 4. The target displacement is dependent on the level of seismic activity expected at your site, the soil properties of your site, mass effective in the first mode, and amount of viscous damping capacity of your structure.

46 Static Pushover Curve: Actual Struct performance V d maximum capacity

47 Static Pushover Curve: inches Structure capacity curve kips ASCE Bilinear pushover curve

48 Example Simple Nonlinear Model: Description: 2 story reinforced concrete structure with r/c second floor and roof. Material nonlinearity assigned to the concrete and reinforcing steel. Plastic hinge zones modeled with FEMA 356 hinges. Modeling and analysis completed in SAP 2000 Advanced for a BSE-2 2 event in Albuquerque, NM.

49 24 x 30 bays with 2 12 tall stories, 18 x 18 columns, and 6 thick diaphragms at the roof and second floor.

50 Nonlinear Results Evaluation: 1. R < R max 2. Individual component behavior is within the acceptance criteria limitations for that component. This is dependent on the load- deformation limits prescriptive to the Rehabilitation Objective. (i.e. IO, LS, CP) 3. Individual component behavior is within the limits defined by the governing code using load combinations and factors defined by ASCE 41. (i.e. = 1.0)

51 Rehabilitation Options: Addition of new concrete shear walls Use of Fiber Reinforced Polymer laminates to strengthen masonry, unreinforced clay tile, or concrete members. Add steel bracing Improve connection capacities Reduce structure mass Global stiffening

52 Rehabilitation Options: Fiber Reinforced Polymers Pre-cured system => BASF. Is a the process of installing FRP belts or strips to the substrate. Strips are fully cured prior to being laminated to the substrate with epoxy. Wet Wet layup system => Fyfe. Is the process of installing FRP fabric to the substrate following saturation of the fabric with epoxy. This process is like paper mache.

53 Rehabilitation Options: Fiber Reinforced Polymers FRP can add an additional 25% to 30% to column capacities.

54 FRP Pull Test ASTM D4541

55 Rehabilitation Options: Fiber Reinforced Polymers FRP can add an additional 50% to beam strength.

56 Rehabilitation Options: Fiber Reinforced Polymers MBrace system from BASF

57 Rehabilitation Options: Fiber Reinforced Polymers MBrace system from BASF

58 Rehabilitation Options: Fiber Reinforced Polymers

59 Rehabilitation Options: Fiber Reinforced Polymers MBrace system from BASF

60 Rehabilitation Options: Fiber Reinforced Polymers Fiber direction FRP is typically a uniaxial material MBrace system from BASF

61 Rehabilitation Options: Fiber Reinforced Polymers

62 Rehabilitation Options: Fiber Reinforced Polymers Nueces Courthouse Corpus Christi, TX

63 Rehabilitation Options: Fiber Reinforced Polymers

64 Rehabilitation Options: Fiber Reinforced Polymers FRP pre-cured laminates can give you about 10 klf (5 klf for wet lay ups) per side of additional shear capacity.

65 Rehabilitation Options: Fiber Reinforced Polymers Fiber direction FRP is typically a uniaxial material

66 Rehabilitation Options: FRP Details

67 Rehabilitation Options: FRP Details

68 Rehabilitation Options: FRP Details

69 FRP Suppliers and Codes: BASF ACI ACI FYFE SIKA

70 QUESTIONS???

Prepared For San Francisco Community College District 33 Gough Street San Francisco, California 94103. Prepared By

Prepared For San Francisco Community College District 33 Gough Street San Francisco, California 94103. Prepared By Project Structural Conditions Survey and Seismic Vulnerability Assessment For SFCC Civic Center Campus 750 Eddy Street San Francisco, California 94109 Prepared For San Francisco Community College District

More information

SEISMIC DESIGN. Various building codes consider the following categories for the analysis and design for earthquake loading:

SEISMIC DESIGN. Various building codes consider the following categories for the analysis and design for earthquake loading: SEISMIC DESIGN Various building codes consider the following categories for the analysis and design for earthquake loading: 1. Seismic Performance Category (SPC), varies from A to E, depending on how the

More information

Designer s NOTEBOOK BLAST CONSIDERATIONS

Designer s NOTEBOOK BLAST CONSIDERATIONS Designer s NOTEBOOK BLAST CONSIDERATIONS For a surface blast, the most directly affected building elements are the façade and structural members on the lower four stories. Although the walls can be designed

More information

Seismic performance evaluation of an existing school building in Turkey

Seismic performance evaluation of an existing school building in Turkey CHALLENGE JOURNAL OF STRUCTURAL MECHANICS 1 (4) (2015) 161 167 Seismic performance evaluation of an existing school building in Turkey Hüseyin Bilgin * Department of Civil Engineering, Epoka University,

More information

SEISMIC RETROFITTING OF STRUCTURES

SEISMIC RETROFITTING OF STRUCTURES SEISMIC RETROFITTING OF STRUCTURES RANJITH DISSANAYAKE DEPT. OF CIVIL ENGINEERING, FACULTY OF ENGINEERING, UNIVERSITY OF PERADENIYA, SRI LANKA ABSTRACT Many existing reinforced concrete structures in present

More information

SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES IN ACI 318. S.K. Ghosh, Ph. D. Neil M. Hawkins, Ph. D. BACKGROUND

SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES IN ACI 318. S.K. Ghosh, Ph. D. Neil M. Hawkins, Ph. D. BACKGROUND SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES IN ACI 318 by S.K. Ghosh, Ph. D. Neil M. Hawkins, Ph. D. President Professor Emeritus S.K. Ghosh Associates Inc. Department of Civil Engineering

More information

INTERNATIONAL BUILDING CODE STRUCTURAL

INTERNATIONAL BUILDING CODE STRUCTURAL INTERNATIONAL BUILDING CODE STRUCTURAL S5-06/07 1604.11 (New), 1605 (New) Proposed Change as Submitted: Proponent: William M. Connolly, State of New Jersey, Department of Community Affairs, Division of

More information

Miss S. S. Nibhorkar 1 1 M. E (Structure) Scholar,

Miss S. S. Nibhorkar 1 1 M. E (Structure) Scholar, Volume, Special Issue, ICSTSD Behaviour of Steel Bracing as a Global Retrofitting Technique Miss S. S. Nibhorkar M. E (Structure) Scholar, Civil Engineering Department, G. H. Raisoni College of Engineering

More information

Nonlinear Static Analysis of a Coker Support Structure

Nonlinear Static Analysis of a Coker Support Structure Nonlinear Static Analysis of a Coker Support Structure Y.S. Salem, California State Polytechnic Univesrity, Pomona K. Sham California State Polytechnic Univesrity, Pomona SUMMARY: In this study, the seismic

More information

SEISMIC CODE EVALUATION. MEXICO Evaluation conducted by Jorge Gutiérrez

SEISMIC CODE EVALUATION. MEXICO Evaluation conducted by Jorge Gutiérrez SEISMIC CODE EVALUATION MEXICO Evaluation conducted by Jorge Gutiérrez NAME OF DOCUMENT: Normas Técnicas Complementarias para Diseño por Sismo ( Complementary Technical Norms for Earthquake Resistant Design

More information

Chapter 9 CONCRETE STRUCTURE DESIGN REQUIREMENTS

Chapter 9 CONCRETE STRUCTURE DESIGN REQUIREMENTS Chapter 9 CONCRETE STRUCTURE DESIGN REQUIREMENTS 9.1 GENERAL 9.1.1 Scope. The quality and testing of concrete and steel (reinforcing and anchoring) materials and the design and construction of concrete

More information

Design Example 1 Reinforced Concrete Wall

Design Example 1 Reinforced Concrete Wall Design Example 1 Reinforced Concrete Wall OVERVIEW The structure in this design example is an eight-story office with load-bearing reinforced concrete walls as its seismic-force-resisting system. This

More information

THE BENEFITS OF USING VISCOUS DAMPERS IN A 42-STORY BUILDING

THE BENEFITS OF USING VISCOUS DAMPERS IN A 42-STORY BUILDING THE BENEFITS OF USING VISCOUS DAMPERS IN A 42-STORY BUILDING Chukwuma G. Ekwueme, Gary C. Hart, Kingsley C. Ozegbe, Can Simsir, Weidlinger Associates, Inc. Gregg E. Brandow, Brandow and Johnston, Inc.

More information

Seismic Risk Prioritization of RC Public Buildings

Seismic Risk Prioritization of RC Public Buildings Seismic Risk Prioritization of RC Public Buildings In Turkey H. Sucuoğlu & A. Yakut Middle East Technical University, Ankara, Turkey J. Kubin & A. Özmen Prota Inc, Ankara, Turkey SUMMARY Over the past

More information

Chapter 3 DESIGN AND CONSTRUCTION FEATURES IMPORTANT TO SEISMIC PERFORMANCE

Chapter 3 DESIGN AND CONSTRUCTION FEATURES IMPORTANT TO SEISMIC PERFORMANCE Chapter 3 DESIGN AND CONSTRUCTION FEATURES IMPORTANT TO SEISMIC PERFORMANCE To satisfy the performance goals of the NEHRP Recommended Seismic Provisions, a number of characteristics are important to the

More information

Evaluation of the Seismic Performance of a Typical Reinforced Concrete School Building Built in Korea during the 1980s.

Evaluation of the Seismic Performance of a Typical Reinforced Concrete School Building Built in Korea during the 1980s. Evaluation of the Seismic Performance of a Typical Reinforced Concrete School Building Built in Korea during the 1980s. Sung-Ho Kim, Hae-Jun Yang, Su-Won Kang Chungnam National University, South Korea

More information

1997 Uniform Administrative Code Amendment for Earthen Material and Straw Bale Structures Tucson/Pima County, Arizona

1997 Uniform Administrative Code Amendment for Earthen Material and Straw Bale Structures Tucson/Pima County, Arizona for Earthen Material and Straw Bale Structures SECTION 70 - GENERAL "APPENDIX CHAPTER 7 - EARTHEN MATERIAL STRUCTURES 70. Purpose. The purpose of this chapter is to establish minimum standards of safety

More information

Retrofitting of RCC Structure WIH Strengthening of Shear Wall with External Post Tensioning Cables

Retrofitting of RCC Structure WIH Strengthening of Shear Wall with External Post Tensioning Cables Retrofitting of RCC Structure WIH Strengthening of Shear Wall with External Post Tensioning Cables Yogesh Ghodke, G. R. Gandhe Department of Civil Engineering, Deogiri Institute of Engineering and Management

More information

Seismic Risk Evaluation of a Building Stock and Retrofit Prioritization

Seismic Risk Evaluation of a Building Stock and Retrofit Prioritization Seismic Risk Evaluation of a Building Stock and Retrofit Prioritization Seismic risk assessment of large building stocks can be conducted at various s depending on the objectives, size of the building

More information

Methods for Seismic Retrofitting of Structures

Methods for Seismic Retrofitting of Structures Methods for Seismic Retrofitting of Structures Retrofitting of existing structures with insufficient seismic resistance accounts for a major portion of the total cost of hazard mitigation. Thus, it is

More information

Carbon Fiber Reinforced Polymer (CFRP) Laminates - Aslan

Carbon Fiber Reinforced Polymer (CFRP) Laminates - Aslan Carbon Fiber Reinforced Polymer (CFRP) Laminates - Aslan 400 series November 10, 2011 Aslan 400 Carbon FRP Laminates are used to structurally strengthen existing concrete, wood, or masonry members in flexure

More information

bi directional loading). Prototype ten story

bi directional loading). Prototype ten story NEESR SG: Behavior, Analysis and Design of Complex Wall Systems The laboratory testing presented here was conducted as part of a larger effort that employed laboratory testing and numerical simulation

More information

Seismic Rehabilitation of Les Jardins Westmount, Montreal (Quebec), Canada

Seismic Rehabilitation of Les Jardins Westmount, Montreal (Quebec), Canada Seismic Rehabilitation of Les Jardins Westmount, Montreal (Quebec), Canada M. Zarrabi & R. Bartosh BCA Consultants, Montreal, Quebec, Canada A. Pall Pall Dynamics Limited, Montreal, Canada SUMMARY The

More information

PERFORMANCE BASED SEISMIC EVALUATION AND RETROFITTING OF UNSYMMETRICAL MEDIUM RISE BUILDINGS- A CASE STUDY

PERFORMANCE BASED SEISMIC EVALUATION AND RETROFITTING OF UNSYMMETRICAL MEDIUM RISE BUILDINGS- A CASE STUDY Paper No. 682 PERFORMANCE BASED SEISMIC EVALUATION AND RETROFITTING OF UNSYMMETRICAL MEDIUM RISE BUILDINGS- A CASE STUDY Jimmy Chandra, Pennung Warnitchai, Deepak Rayamajhi, Naveed Anwar and Shuaib Ahmad

More information

Energy Dissipation Properties of Infilled RC Frames Retrofitted with CFRP *

Energy Dissipation Properties of Infilled RC Frames Retrofitted with CFRP * Energy Dissipation Properties of Infilled RC Frames Retrofitted with CFRP * Principal Investigator: Assist. Prof. Dr. E. Yuksel, Istanbul Technical University, Istanbul. Ph.D. Student: H. Ozkaynak, Istanbul

More information

The ACI 562 Repair Code

The ACI 562 Repair Code The ACI 562 Repair Code Code Requirements for Evaluation, Repair and Rehabilitation of Concrete Buildings by Keith Kesner 1 Chair ACI 562 Lawrence Kahn 2 Former Chair ACI 562 1. Associate WDP & Associates,

More information

Cost advantages of Buckling Restrained Braced Frame buildings in accordance with Eurocode

Cost advantages of Buckling Restrained Braced Frame buildings in accordance with Eurocode 2010 Cost advantages of Buckling Restrained Braced Frame buildings in accordance with Eurocode This report compares Buckling Restrained Braced Frames to Concentrically Braced Frames as primary lateral

More information

FOUNDATION DESIGN. Instructional Materials Complementing FEMA 451, Design Examples

FOUNDATION DESIGN. Instructional Materials Complementing FEMA 451, Design Examples FOUNDATION DESIGN Proportioning elements for: Transfer of seismic forces Strength and stiffness Shallow and deep foundations Elastic and plastic analysis Foundation Design 14-1 Load Path and Transfer to

More information

Modern Codes for Design of Concrete Concrete Structures Presentation Outline

Modern Codes for Design of Concrete Concrete Structures Presentation Outline Modern Codes for Design of Concrete Structures James K. Wight F.E. Richart, Jr. Professor of Civil Eng. University of Michigan Presentation Outline Current Codes Where did they come from? What is their

More information

DIVISION: 03 00 00 CONCRETE SECTION: 03 01 00 MAINTENANCE OF CONCRETE DIVISION: 04 00 00 MASONRY SECTION: 04 01 20 MAINTENANCE OF UNIT MASONRY

DIVISION: 03 00 00 CONCRETE SECTION: 03 01 00 MAINTENANCE OF CONCRETE DIVISION: 04 00 00 MASONRY SECTION: 04 01 20 MAINTENANCE OF UNIT MASONRY 0 ICC ES Report ICC ES (800) 423 6587 (562) 699 0543 www.icc es.org 000 Most Widely Accepted and Trusted ESR 3288 Reissued 12/2015 This report is subject to renewal 12/2016. SECTION: 03 01 00 MAINTENANCE

More information

SEISMIC RETROFIT DESIGN CRITERIA

SEISMIC RETROFIT DESIGN CRITERIA SEISMIC RETROFIT DESIGN CRITERIA British Columbia Ministry of Transportation June 30, 2005 Prepared by: Recommended by: Approved by: Don Kennedy, P.Eng., Associated Engineering (BC) Sharlie Huffman, P.

More information

1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures

1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures Prof. Oral Buyukozturk Massachusetts Institute of Technology Outline 1 1.054/1.541 Mechanics and Design of Concrete Structures (3-0-9) Outline 1 Introduction / Design Criteria for Reinforced Concrete Structures

More information

SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES. S.K. Ghosh, Ph. D. President S.K. Ghosh Associates Inc. Northbrook, IL BACKGROUND

SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES. S.K. Ghosh, Ph. D. President S.K. Ghosh Associates Inc. Northbrook, IL BACKGROUND SEISMIC DESIGN PROVISIONS FOR PRECAST CONCRETE STRUCTURES S.K. Ghosh, Ph. D. President S.K. Ghosh Associates Inc. Northbrook, IL BACKGROUND Until recently, precast concrete structures could be built in

More information

Cover. When to Specify Intermediate Precast Concrete Shear Walls. 10.10 Rev 4. White Paper WP004

Cover. When to Specify Intermediate Precast Concrete Shear Walls. 10.10 Rev 4. White Paper WP004 Cover Introduction In regard to precast concrete systems, the addition of two new categories of Seismic Force Resisting Systems (SFRS) in IBC 2006 has created some confusion about whether to specify intermediate

More information

Specification for Structures to be Built in Disaster Areas

Specification for Structures to be Built in Disaster Areas Ministry of Public Works and Settlement Government of Republic of Turkey Specification for Structures to be Built in Disaster Areas PART III - EARTHQUAKE DISASTER PREVENTION (Chapter 5 through Chapter

More information

Appendix : According to IBC 2003, table , the minimum uniformly distributed live loads and minimum concentrated live loads are as follow:

Appendix : According to IBC 2003, table , the minimum uniformly distributed live loads and minimum concentrated live loads are as follow: Appendix Dead and Live Loads International Building Code 2003 (IBC) 1607.1: According to IBC 2003, table 1607.1, the minimum uniformly distributed live loads and minimum concentrated live loads are as

More information

Reinforced Concrete Design

Reinforced Concrete Design FALL 2013 C C Reinforced Concrete Design CIVL 4135 ii 1 Chapter 1. Introduction 1.1. Reading Assignment Chapter 1 Sections 1.1 through 1.8 of text. 1.2. Introduction In the design and analysis of reinforced

More information

ASSESSMENT AND PROPOSED STRUCTURAL REPAIR STRATEGIES FOR BRIDGE PIERS IN TAIWAN DAMAGED BY THE JI-JI EARTHQUAKE ABSTRACT

ASSESSMENT AND PROPOSED STRUCTURAL REPAIR STRATEGIES FOR BRIDGE PIERS IN TAIWAN DAMAGED BY THE JI-JI EARTHQUAKE ABSTRACT ASSESSMENT AND PROPOSED STRUCTURAL REPAIR STRATEGIES FOR BRIDGE PIERS IN TAIWAN DAMAGED BY THE JI-JI EARTHQUAKE Pei-Chang Huang 1, Graduate Research Assistant / MS Candidate Yao T. Hsu 2, Ph.D., PE, Associate

More information

DISASTER RESISTANCE EARTHQUAKES AND STRUCTURES

DISASTER RESISTANCE EARTHQUAKES AND STRUCTURES DISASTER RESISTANCE EARTHQUAKES AND STRUCTURES EARTHQUAKES Origin of earthquakes The earth was a single land about two hundred million years ago. This land split progressively over a long period of time

More information

TECHNICAL NOTE. Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006 IBC. On Cold-Formed Steel Construction INTRODUCTION

TECHNICAL NOTE. Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006 IBC. On Cold-Formed Steel Construction INTRODUCTION TECHNICAL NOTE On Cold-Formed Steel Construction 1201 15th Street, NW, Suite 320 W ashington, DC 20005 (202) 785-2022 $5.00 Design of Diagonal Strap Bracing Lateral Force Resisting Systems for the 2006

More information

DESIGN DRIFT REQUIREMENTS FOR LONG-PERIOD STRUCTURES

DESIGN DRIFT REQUIREMENTS FOR LONG-PERIOD STRUCTURES 13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 3292 DESIGN DRIFT REQUIREMENTS FOR LONG-PERIOD STRUCTURES Gary R. Searer 1 and Sigmund A. Freeman 2 SUMMARY

More information

Comparison of the Structural Provisions in the International Existing Building Code 2012 versus the Rhode Island State Rehabilitation Code

Comparison of the Structural Provisions in the International Existing Building Code 2012 versus the Rhode Island State Rehabilitation Code August 3, 2012 Existing Building Code 2012 versus the Rhode Island State By: Structural Engineers Association of Rhode Island, Building Code Committee Introduction At the request of the Building Code Standards

More information

Seismic Assessment and Retrofitting of Structures: Eurocode8 Part3 and the Greek Code on Seismic Structural Interventions

Seismic Assessment and Retrofitting of Structures: Eurocode8 Part3 and the Greek Code on Seismic Structural Interventions Working Group 7: Earthquake Resistant Structures Geneva, 25 September 2015 Seismic Assessment and Retrofitting of Structures: Eurocode8 Part3 and the Greek Code on Seismic Structural Interventions Prof.

More information

SEISMIC ANALYSIS AND RETROFITTING OF R.C.C STRUCTURE

SEISMIC ANALYSIS AND RETROFITTING OF R.C.C STRUCTURE International Journal of Advanced Research in Biology Engineering Science and Technology (IJARBEST) Vol., Issue, April 1 SEISMIC ANALYSIS AND RETROFITTING OF R.C.C STRUCTURE M.R.NAVANEETHA KRISHNAN 1,

More information

APE T CFRP Aslan 500

APE T CFRP Aslan 500 Carbon Fiber Reinforced Polymer (CFRP) Tape is used for structural strengthening of concrete, masonry or timber elements using the technique known as Near Surface Mount or NSM strengthening. Use of CFRP

More information

SEISMIC DESIGN OF MULTI-STORY BUILDINGS WITH METALLIC STRUCTURAL FUSES. R. Vargas 1 and M. Bruneau 2 ABSTRACT

SEISMIC DESIGN OF MULTI-STORY BUILDINGS WITH METALLIC STRUCTURAL FUSES. R. Vargas 1 and M. Bruneau 2 ABSTRACT Proceedings of the 8 th U.S. National Conference on Earthquake Engineering April 18-22, 26, San Francisco, California, USA Paper No. 28 SEISMIC DESIGN OF MULTI-STORY BUILDINGS WITH METALLIC STRUCTURAL

More information

Technical Notes 3B - Brick Masonry Section Properties May 1993

Technical Notes 3B - Brick Masonry Section Properties May 1993 Technical Notes 3B - Brick Masonry Section Properties May 1993 Abstract: This Technical Notes is a design aid for the Building Code Requirements for Masonry Structures (ACI 530/ASCE 5/TMS 402-92) and Specifications

More information

Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile

Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile Analysis and Repair of an Earthquake-Damaged High-rise Building in Santiago, Chile J. Sherstobitoff Ausenco Sandwell, Vancouver, Canada P. Cajiao AMEC, Vancouver, Canada P. Adebar University of British

More information

Evaluation of the Seismic Performance of Brick Walls Retrofitted and Repaired by Expansive Epoxy Injection

Evaluation of the Seismic Performance of Brick Walls Retrofitted and Repaired by Expansive Epoxy Injection Evaluation of the Seismic Performance of Brick Walls Retrofitted and Repaired by Expansive Epoxy Injection Al Zeiny, Ph.D, P.E. 1 Epoxy materials have been used in the past in the preservation of old masonry

More information

Non-linear behavior and seismic safety of reinforced concrete structures

Non-linear behavior and seismic safety of reinforced concrete structures Non-linear behavior and seismic safety of reinforced concrete structures K. Girgin & E. Oer Istanbul Technical University, Faculty of Civil Engineering, Istanbul, Turkey Keywords: Reinforced concrete structures,

More information

REVISION OF GUIDELINE FOR POST- EARTHQUAKE DAMAGE EVALUATION OF RC BUILDINGS IN JAPAN

REVISION OF GUIDELINE FOR POST- EARTHQUAKE DAMAGE EVALUATION OF RC BUILDINGS IN JAPAN 10NCEE Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 2014 Anchorage, Alaska REVISION OF GUIDELINE FOR POST- EARTHQUAKE DAMAGE EVALUATION OF RC

More information

Nonlinear Structural Analysis For Seismic Design

Nonlinear Structural Analysis For Seismic Design NIST GCR 10-917-5 NEHRP Seismic Design Technical Brief No. 4 Nonlinear Structural Analysis For Seismic Design A Guide for Practicing Engineers Gregory G. Deierlein Andrei M. Reinhorn Michael R. Willford

More information

MODELLING OF AN INFILL WALL FOR THE ANALYSIS OF A BUILDING FRAME SUBJECTED TO LATERAL FORCE

MODELLING OF AN INFILL WALL FOR THE ANALYSIS OF A BUILDING FRAME SUBJECTED TO LATERAL FORCE International Journal of Civil Engineering and Technology (IJCIET) Volume 7, Issue 1, Jan-Feb 2016, pp. 180-187, Article ID: IJCIET_07_01_015 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=7&itype=1

More information

EGYPTIAN CODES FOR DESIGN AND CONSTRUCTION OF BUILDINGS

EGYPTIAN CODES FOR DESIGN AND CONSTRUCTION OF BUILDINGS in the Euro-Mediterranean Area EGYPTIAN CODES FOR DESIGN AND CONSTRUCTION OF BUILDINGS By Prof. Amr Ezzat Salama Chairman of Housing, Building National Center Cairo, Egypt Former Minister of High Education

More information

SEISMIC RETROFITTING OF REINFORCED CONCRETE BUILDINGS USING TRADITIONAL AND INNOVATIVE TECHNIQUES

SEISMIC RETROFITTING OF REINFORCED CONCRETE BUILDINGS USING TRADITIONAL AND INNOVATIVE TECHNIQUES ISET Journal of Earthquake Technology, Paper No. 454, Vol. 42, No. 2-3, June-September 25, pp. 21-46 SEISMIC RETROFITTING OF REINFORCED CONCRETE BUILDINGS USING TRADITIONAL AND INNOVATIVE TECHNIQUES Giuseppe

More information

SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS

SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS Fracture Mechanics of Concrete Structures Proceedings FRAMCOS-3 AEDIFICA TIO Publishers, D-79104 Freiburg, Germany SEISMIC RETROFITTING TECHNIQUE USING CARBON FIBERS FOR REINFORCED CONCRETE BUILDINGS H.

More information

SLAB DESIGN. Introduction ACI318 Code provides two design procedures for slab systems:

SLAB DESIGN. Introduction ACI318 Code provides two design procedures for slab systems: Reading Assignment SLAB DESIGN Chapter 9 of Text and, Chapter 13 of ACI318-02 Introduction ACI318 Code provides two design procedures for slab systems: 13.6.1 Direct Design Method (DDM) For slab systems

More information

Seismic Evaluation and Retrofitting of RC Building by Using Energy Dissipating Devices

Seismic Evaluation and Retrofitting of RC Building by Using Energy Dissipating Devices Seismic Evaluation and Retrofitting of RC Building by Using Energy Dissipating Devices S. I. Khan 1, Prof. P. O. Modani 2 1(Department of Civil Engineering, B.N.C.O.E, Pusad) 2(Assist. Professor Department

More information

Draft Table of Contents. Building Code Requirements for Structural Concrete and Commentary ACI 318-14

Draft Table of Contents. Building Code Requirements for Structural Concrete and Commentary ACI 318-14 Draft Table of Contents Building Code Requirements for Structural Concrete and Commentary ACI 318-14 BUILDING CODE REQUIREMENTS FOR STRUCTURAL CONCRETE (ACI 318 14) Chapter 1 General 1.1 Scope of ACI 318

More information

NIST GCR 10-917-9 Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design

NIST GCR 10-917-9 Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design NIST GCR 0-97-9 Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design NEHRP Consultants Joint Venture A Partnership of the Applied Technology Council and the Consortium of Universities

More information

G. Michele Calvi IUSS Pavia

G. Michele Calvi IUSS Pavia CONVEGNO SISMA ED ELEMENTI NON STRUTTURALI Approcci, Stati Limite e Verifiche Prestazionali Bologna 24 ottobre 2014 PROGETTO DI ELEMENTI NON STRUTTURALI SOGGETTI AD AZIONI SISMICHE G. Michele Calvi IUSS

More information

CH. 2 LOADS ON BUILDINGS

CH. 2 LOADS ON BUILDINGS CH. 2 LOADS ON BUILDINGS GRAVITY LOADS Dead loads Vertical loads due to weight of building and any permanent equipment Dead loads of structural elements cannot be readily determined b/c weight depends

More information

CEE Earthquake Resistant Design Introduction to Class Project Building

CEE Earthquake Resistant Design Introduction to Class Project Building University of California at Berkeley Civil and Environmental Engineering Instructor: Stephen A. Mahin Spring Semester 2008 CEE 227 -- Earthquake Resistant Design Introduction to Class Project Building

More information

Chapter 4 BUILDINGS, STRUCTURES, AND NONSTRUCTURAL COMPONENTS. 4.1 Buildings Structural Systems EARTHQUAKE-RESISTANT DESIGN CONCEPTS

Chapter 4 BUILDINGS, STRUCTURES, AND NONSTRUCTURAL COMPONENTS. 4.1 Buildings Structural Systems EARTHQUAKE-RESISTANT DESIGN CONCEPTS Chapter 4 BUILDINGS, STRUCTURES, AND NONSTRUCTURAL COMPONENTS The NEHRP Recommended Seismic Provisions includes seismic design and construction requirements for a wide range of buildings and structures

More information

SEISMIC UPGRADE OF OAK STREET BRIDGE WITH GFRP

SEISMIC UPGRADE OF OAK STREET BRIDGE WITH GFRP 13 th World Conference on Earthquake Engineering Vancouver, B.C., Canada August 1-6, 2004 Paper No. 3279 SEISMIC UPGRADE OF OAK STREET BRIDGE WITH GFRP Yuming DING 1, Bruce HAMERSLEY 2 SUMMARY Vancouver

More information

EVALUATION OF SEISMIC RESPONSE - FACULTY OF LAND RECLAMATION AND ENVIRONMENTAL ENGINEERING -BUCHAREST

EVALUATION OF SEISMIC RESPONSE - FACULTY OF LAND RECLAMATION AND ENVIRONMENTAL ENGINEERING -BUCHAREST EVALUATION OF SEISMIC RESPONSE - FACULTY OF LAND RECLAMATION AND ENVIRONMENTAL ENGINEERING -BUCHAREST Abstract Camelia SLAVE University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti

More information

Seismic retrofit of non-ductile concrete and masonry walls by steelstrips

Seismic retrofit of non-ductile concrete and masonry walls by steelstrips Seismic retrofit of non-ductile concrete and masonry walls by steelstrips bracing Mustafa Taghdi, Michel Bruneau, & Murat Saatcioglu Ottawa Carleton Earthquake Engineering Research Centre Department of

More information

SEISMIC MODEL TEST AND ANALYSIS OF MULTI-TOWER HIGH-RISE BUILDINGS

SEISMIC MODEL TEST AND ANALYSIS OF MULTI-TOWER HIGH-RISE BUILDINGS SEISMIC MODEL TEST AND ANALYSIS OF MULTI-TOWER HIGH-RISE BUILDINGS Wensheng LU 1 And Xilin LU 2 SUMMARY This paper summarizes tests of several scaled multi-tower high-rise building models on the shaking

More information

CONCRETE SHEAR WALL CONSTRUCTION M. Ofelia Moroni, University of Chile, Santiago, Chile

CONCRETE SHEAR WALL CONSTRUCTION M. Ofelia Moroni, University of Chile, Santiago, Chile BACKGROUND CONCRETE SHEAR WALL CONSTRUCTION M. Ofelia Moroni, University of Chile, Santiago, Chile Buildings with cast-in-situ reinforced concrete shear walls are widespread in many earthquake-prone countries

More information

Punching shear behavior of steel-concrete composite decks with different shear connectors

Punching shear behavior of steel-concrete composite decks with different shear connectors Punching shear behavior of steel-concrete composite decks with different shear connectors *Xiao-Qing Xu 1) and Yu-Qing Liu 2) 1), 2) Department of Bridge Engineering, Tongji University, Shanghai 200092,

More information

Key Words: brick, grout, material properties, mortar, reinforcement, structural clay tile.

Key Words: brick, grout, material properties, mortar, reinforcement, structural clay tile. Technical Notes 3A - Brick Masonry Material Properties December 1992 Abstract: Brick masonry has a long history of reliable structural performance. Standards for the structural design of masonry which

More information

Chapter 5 DESIGN REQUIREMENTS. 5.1 Seismic Design Categories EARTHQUAKE-RESISTANT DESIGN CONCEPTS

Chapter 5 DESIGN REQUIREMENTS. 5.1 Seismic Design Categories EARTHQUAKE-RESISTANT DESIGN CONCEPTS Chapter 5 DESIGN REQUIREMENTS 5.1 Seismic Design Categories The NEHRP Recommended Seismic Provisions recognizes that, independent of the quality of their design and construction, not all buildings pose

More information

ETABS. Integrated Building Design Software. Concrete Shear Wall Design Manual. Computers and Structures, Inc. Berkeley, California, USA

ETABS. Integrated Building Design Software. Concrete Shear Wall Design Manual. Computers and Structures, Inc. Berkeley, California, USA ETABS Integrated Building Design Software Concrete Shear Wall Design Manual Computers and Structures, Inc. Berkeley, California, USA Version 8 January 2002 Copyright The computer program ETABS and all

More information

Advanced Retrofitting Methods and Techniques for RC Building: State of an Art

Advanced Retrofitting Methods and Techniques for RC Building: State of an Art Advanced Retrofitting Methods and Techniques for RC Building: State of an Art Miss. Swati Sanjay Nibhorkar * M. E (Structure) Scholar, Civil Engineering Department, G. H. Raisoni College of Engg and Management,

More information

Statics of Structural Supports

Statics of Structural Supports Statics of Structural Supports TYPES OF FORCES External Forces actions of other bodies on the structure under consideration. Internal Forces forces and couples exerted on a member or portion of the structure

More information

COST ADVANTAGES OF BUCKLING RESTRAINED BRACED FRAME BUILDINGS

COST ADVANTAGES OF BUCKLING RESTRAINED BRACED FRAME BUILDINGS COST ADVANTAGES OF BUCKLING RESTRAINED BRACED FRAME BUILDINGS May 27, 2009 INTRODUCTION Through the development of hypothetical model buildings, this study investigates the potential material savings and

More information

What is Seismic Retrofitting?

What is Seismic Retrofitting? What is Seismic Retrofitting? SEISMIC RETROFITTING A Seismic Retrofit provides existing structures with more resistance to seismic activity due to earthquakes. In buildings, this process typically includes

More information

Introduction. What Will You Gain From This Presentation? Benefits of Structural Steel

Introduction. What Will You Gain From This Presentation? Benefits of Structural Steel Introduction This presentation was developed as a teaching aid with the support of the American Institute of Steel Construction. Its objective is to provide technical background and information for connections

More information

DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES PART V SEISMIC DESIGN

DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES PART V SEISMIC DESIGN DESIGN SPECIFICATIONS FOR HIGHWAY BRIDGES PART V SEISMIC DESIGN MARCH 2002 CONTENTS Chapter 1 General... 1 1.1 Scope... 1 1.2 Definition of Terms... 1 Chapter 2 Basic Principles for Seismic Design... 4

More information

ASSESSMENT AND RETROFITTING OF EXISTING RC BUILDINGS IN VIETNAM IN TERMS OF EARTHQUAKE RESISTANCES

ASSESSMENT AND RETROFITTING OF EXISTING RC BUILDINGS IN VIETNAM IN TERMS OF EARTHQUAKE RESISTANCES GEM-SEA Workshop on Seismic Vulnerability of Buildings Nanyang Technological University, Singapore 1 st July 2013 ASSESSMENT AND RETROFITTING OF EXISTING RC BUILDINGS IN VIETNAM IN TERMS OF EARTHQUAKE

More information

CSA S16-09 Design of Steel Structures Canada

CSA S16-09 Design of Steel Structures Canada CSA S16-09 Design of Steel Structures Canada Ed Whalen, P.Eng CISC President CSA S16-09 1 CSA Standard S16-09 Standard, Design of Steel Structures. Sets out minimum requirements used by engineers in the

More information

Review of Code Provisions on Design Seismic Forces for Liquid Storage Tanks

Review of Code Provisions on Design Seismic Forces for Liquid Storage Tanks Document No. :: IITK-GSDMA-EQ1-V1. Final Report :: A - Earthquake Codes IITK-GSDMA Project on Building Codes Review of Code Provisions on Design Seismic Forces for Liquid Storage Tanks by Dr. O. R. Jaiswal

More information

Detailed Contents of Courses for the M.Engg Programme in Civil Engineering. Structural Engineering

Detailed Contents of Courses for the M.Engg Programme in Civil Engineering. Structural Engineering Detailed Contents of Courses for the M.Engg Programme in Civil Engineering CE-501 Advanced Structural Analysis Structural Engineering Matrix algebra, solution of equations, review of energy principles,

More information

DESIGN OF SLABS. Department of Structures and Materials Engineering Faculty of Civil and Environmental Engineering University Tun Hussein Onn Malaysia

DESIGN OF SLABS. Department of Structures and Materials Engineering Faculty of Civil and Environmental Engineering University Tun Hussein Onn Malaysia DESIGN OF SLABS Department of Structures and Materials Engineering Faculty of Civil and Environmental Engineering University Tun Hussein Onn Malaysia Introduction Types of Slab Slabs are plate elements

More information

Seismic Retrofit of Reinforced Concrete Beam- Column T-Joints in Bridge Piers with FRP Composite Jackets

Seismic Retrofit of Reinforced Concrete Beam- Column T-Joints in Bridge Piers with FRP Composite Jackets SP-258 1 Seismic Retrofit of Reinforced Concrete Beam- Column T-Joints in Bridge Piers with FRP Composite Jackets by C.P. Pantelides and J. Gergely Synopsis: The research described encompasses laboratory

More information

VERIFICATION OF THE METHOD FOR IMPROVING ACCURACY OF SIMPLIFIED SEISMIC RESPONSE ANALYSIS OF STEEL RIGID FRAME VIADUCTS

VERIFICATION OF THE METHOD FOR IMPROVING ACCURACY OF SIMPLIFIED SEISMIC RESPONSE ANALYSIS OF STEEL RIGID FRAME VIADUCTS International Journal of Civil Engineering and Technology (IJCIET) Volume 6, Issue 10, Oct 2015, pp. 46-61 Article ID: IJCIET_06_10_005 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=6&itype=10

More information

CE591 Lecture 8: Shear Walls

CE591 Lecture 8: Shear Walls CE591 Lecture 8: Shear Walls Introduction History, examples Benefits Disadvantages Plate Girder Analogy Behavior of Special Plate Shear Walls (SPSW) Design of SPSW Important considerations Special Plate

More information

The Original Carbon Fiber Reinforced Polymer System

The Original Carbon Fiber Reinforced Polymer System Infrastructure The Original Carbon Fiber Reinforced Polymer System Phone: 52.292.39 Toll Free: 866.38.269 Fax: 52.48.5274 282 E. Fort Lowell Rd. Tucson, AZ 8576 www.dowaksausa.com Test results are supported

More information

SEISMIC APPROACH DESIGN COMPARISON BETWEEN

SEISMIC APPROACH DESIGN COMPARISON BETWEEN IABSE ANNUAL MEETING, LONDON, 19 TH SEPTEMBER 2011 SEISMIC APPROACH DESIGN COMPARISON BETWEEN IBC AND ITALIAN DM2008 Ing. Luca Zanaica Senior Structural Engineer Ing. Francesco Caobianco Senior Structural

More information

IMPACT OF DIAMETER TO THICKNESS RATIO ON THE SEISMIC BEHAVIOR OF REINFORCED CONCRETE FILLED STEEL TUBES

IMPACT OF DIAMETER TO THICKNESS RATIO ON THE SEISMIC BEHAVIOR OF REINFORCED CONCRETE FILLED STEEL TUBES 10NCEE Tenth U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering July 21-25, 2014 Anchorage, Alaska IMPACT OF DIAMETER TO THICKNESS RATIO ON THE SEISMIC BEHAVIOR OF REINFORCED

More information

Retrofitting By Means Of Post Tensioning. Khaled Nahlawi 1

Retrofitting By Means Of Post Tensioning. Khaled Nahlawi 1 Retrofitting By Means Of Post Tensioning Khaled Nahlawi 1 Abstract An analytical program was prepared to retrofit the Holy Cross Church in Santa Cruz, California. An inelastic analysis was perfonned on

More information

Current Status of Seismic Retrofitting Technology

Current Status of Seismic Retrofitting Technology CONTENTS Current Status of Seismic Retrofitting Technology Damages of Past Earthquakes Seismic Diagnosis Method Building Control Section Urban Building Division Bureau of Urban Development, TMG Seismic

More information

USE OF CFRP LAMINATES FOR STRENGTHENING OF REINFORCED CONCRETE CORBELS

USE OF CFRP LAMINATES FOR STRENGTHENING OF REINFORCED CONCRETE CORBELS International Journal of Civil Engineering and Technology (IJCIET) Volume 6, Issue 11, Nov 2015, pp. 11-20, Article ID: IJCIET_06_11_002 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=6&itype=11

More information

Untopped Precast Concrete Diaphragms in High-Seismic Applications. Ned M. Cleland, Ph.D., P.E. President Blue Ridge Design, Inc. Winchester, Virginia

Untopped Precast Concrete Diaphragms in High-Seismic Applications. Ned M. Cleland, Ph.D., P.E. President Blue Ridge Design, Inc. Winchester, Virginia Untopped Precast Concrete Diaphragms in High-Seismic Applications Ned M. Cleland, Ph.D., P.E. President Blue Ridge Design, Inc. Winchester, Virginia S. K. Ghosh, Ph.D. President S. K. Ghosh Associates,

More information

Rehabilitation of a 1985 Steel Moment- Frame Building

Rehabilitation of a 1985 Steel Moment- Frame Building Rehabilitation of a 1985 Steel Moment- Frame Building Gregg Haskell, a) M.EERI A 1985 steel moment frame is seismically upgraded using passive energy dissipation, without adding stiffness to the system.

More information

Steel and Cast Iron (Systematic Rehabilitation)

Steel and Cast Iron (Systematic Rehabilitation) 5. Steel and Cast Iron 5.1 Scope Rehabilitation measures for steel components and elements are described in this chapter. Information needed for systematic rehabilitation of steel buildings, as depicted

More information

Distribution of Forces in Lateral Load Resisting Systems

Distribution of Forces in Lateral Load Resisting Systems Distribution of Forces in Lateral Load Resisting Systems Part 2. Horizontal Distribution and Torsion IITGN Short Course Gregory MacRae Many slides from 2009 Myanmar Slides of Profs Jain and Rai 1 Reinforced

More information

ANALYSIS FOR BEHAVIOR AND ULTIMATE STRENGTH OF CONCRETE CORBELS WITH HYBRID REINFORCEMENT

ANALYSIS FOR BEHAVIOR AND ULTIMATE STRENGTH OF CONCRETE CORBELS WITH HYBRID REINFORCEMENT International Journal of Civil Engineering and Technology (IJCIET) Volume 6, Issue 10, Oct 2015, pp. 25-35 Article ID: IJCIET_06_10_003 Available online at http://www.iaeme.com/ijciet/issues.asp?jtype=ijciet&vtype=6&itype=10

More information

Stress Strain Relationships

Stress Strain Relationships Stress Strain Relationships Tensile Testing One basic ingredient in the study of the mechanics of deformable bodies is the resistive properties of materials. These properties relate the stresses to the

More information

AN IMPROVED SEISMIC DESIGN APPROACH FOR TWO-COLUMN REINFORCED CONCRETE BENTS OVER FLEXIBLE FOUNDATIONS WITH PREDEFINED DAMAGE LEVELS

AN IMPROVED SEISMIC DESIGN APPROACH FOR TWO-COLUMN REINFORCED CONCRETE BENTS OVER FLEXIBLE FOUNDATIONS WITH PREDEFINED DAMAGE LEVELS AN IMPROVED SEISMIC DESIGN APPROACH FOR TWO-COLUMN REINFORCED CONCRETE BENTS OVER FLEXIBLE FOUNDATIONS WITH PREDEFINED DAMAGE LEVELS ABSTRACT: T. Yılmaz 1 ve A. Caner 2 1 Araştırma Görevlisi, İnşaat Müh.

More information