Seismic Evaluation and Retrofit of Existing Buildings - Webcast - Newly Updated

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INSTRUCTOR: 
Robert G. Pekelnicky, P.E., S.E., M.ASCE

Purpose and Background

As providing sustainable and disaster resilience infrastructure continues to be at the forefront of the national discourse, existing buildings are coming under greater scrutiny. Whether it is an adaptive reuse project triggering a retrofit from the local jurisdiction or an owner looking to enhance the safety of their property, seismic evaluation and retrofit are topics structural engineers are frequently confronted with. This course seeks to demystify the commonly used standards and to explain the differences between seismic evaluation and retrofit of an existing building and new building design. The course has been updated from pervious versions to reflect the new 2023 edition of ASCE 41.

Benefits and Learning Outcomes

Upon completion of this course, you will be able to:

• Correctly apply the ASCE 41-23 standard to existing building projects.
• Identify significant seismic deficiencies in concrete, steel, masonry, and wood buildings based on past earthquake performance.
• Streamline seismic evaluation and retrofit design of simple structures through the use of deficiency-specific mitigation measures.
• Successfully apply the ASCE 41 standard as mandated by many federal and local jurisdictions.
• Accurately describe how the fundamental concepts of performance-based seismic design relate to existing buildings.
• Select the appropriate performance-level for an existing building based on the building’s function.
• Correctly explain the background behind the current standards for seismic evolution and retrofit of buildings by citing lessons learned from past earthquakes.
• Correctly explain the fundamental difference between new design standards and the standard for evaluation and retrofit of existing buildings.
• Successfully use ASCE 41 Tier 1 screening to identify common seismic deficiencies with various types of older buildings.
• Describe how to use the ASCE 41 Tier 2 evaluation and retrofit procedures to improve the seismic safety of existing buildings.
• Specify which detailed analysis provisions can be used to gain a thorough understanding of the seismic performance of an existing building.
• Identify the correct analysis procedure for an existing building retrofit project based on the building size and structural system.
• Describe how the ASCE 41 standard should be applied to different construction materials and structural systems.
• Prepare the ASCE 41 standard to assess nonstructural seismic hazards.

Assessment of Learning Outcomes

Students' achievement of the learning outcomes will be assessed via a short post-test assessment (true-false, multiple choice, and/or fill in the blank questions).

Who Should Attend?

• Civil and structural engineers
• Building officials
• Students and faculty in civil and structural engineering

Outline

Part 1: History of Earthquake Engineering and Performance-based Seismic Design

• Introduction
• History of Earthquake Engineering
• Earthquakes and Modern Buildings
• Evolution of Earthquake Design Standards
• New Building Standards vs. Existing Building Standards
• Introduction to Performance-based earthquake engineering
• Performance Objectives for Existing Buildings
• Seismic Hazards used in ASCE 41-23
• Conclusion

Part 2: Fundamental Concepts of Seismic Evaluation and the ASCE 41 Standard

• Introduction
• Overview and history of ASCE 41
• Deficiency-based vs. systematic procedures
• Identifying the seismic force resisting system
• Capacity Design Principals
• Displacement-based design
• Tying it all together – the ASCE 41 analysis procedures
• Conclusion

Part 3: Deficiency-Based Seismic Evaluation & Retrofit

• Introduction
• Introduction to Deficiently-based procedures
• The Tier 1 Screening
• Example Tier 1 Screening
• Tier 2 – Deficiency-based Evaluation Basics
• Tier 2 – Deficiency-based Evaluation
• Tier 2 – Deficiency-based Retrofit
• Comparison between deficiency-based and systematic evaluation and retrofit
• Conclusion

Part 4: Seismic Evaluation and Retrofit of Steel Moment Frame Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Beam and Beam-column connection evaluation
• Column Evaluation
• Retrofit Strategies
• Conclusion

Part 5: Seismic Evaluation and Retrofit of Steel Braced Frame Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Brace and Brace Connection Evaluation
• Frame Beam and Column Evaluation
• Braced Frame Retrofit Strategy
• Conclusion

Part 6: Seismic Evaluation and Retrofit of Reinforced Concrete Moment Frames

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Beam and Beam-column joint evaluation
• Column Evaluation
• Frame retrofit options
• Conclusion

Part 7: Seismic Evaluation and Retrofit of Reinforced Concrete Wall Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Wall Evaluation
• Secondary frame evaluation
• Retrofit Options
• Conclusion

Part 8: Seismic Evaluation and Retrofit of Wood Framed Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Shear Wall Evaluation
• Diaphragm Evaluation
• Retrofit Options
• Conclusion

Part 9: Seismic Evaluation and Retrofit of Unreinforced Masonry Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• URM Wall In-plane Evaluation
• Wall out-of-plane Evaluation
• Retrofit Options
• Conclusion

Part 10: Seismic Evaluation and Retrofit of Reinforced Masonry and Concrete Tilt-Up Buildings

• Introduction
• Building Summary
• Tier 1 Screening
• Building Analysis
• Wall in and out-of-plane evaluation
• Roof diaphragm Evaluation
• Retrofit Summary
• Conclusion

Part 11: Seismic Evaluation and Retrofit of Foundation Systems

• Introduction
• Foundation modeling options
• Braced frame fixed base Found Evaluation
• Shear wall flexible base model
• Soil Structure Interaction Introduction
• Soil Structure Interaction Calculations
• Liquefaction Analysis Overview
• Conclusion

Part 12: Seismic Evaluation and retrofit of Nonstructural Components

• Introduction
• Nonstructural Performance Levels
• Nonstructural Life Safety
• Nonstructural Position Retention
• Operational Nonstructural Performance
• Tier 1 – Screening
• Tier 3 – Nonstructural Evaluation
• Conclusion

How to Earn your CEUs/PDHs

This course is worth 2.1 CEUs /21 PDHs. To receive your certificate of completion, you will need to complete a short post-test and receive a passing score of 70% or higher within 30 days of the course.

How do I convert CEUs to PDHs?

1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]