Preservation Engineering: Principles and Practice in the Assessment and Treatment of Heritage Structures

WS2–Sunday and Monday, October 26 & 27

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Workshops will be in French and English simultaneously interpreted and/or English with bilingual assistance as needed.

WS2—Preservation Engineering: Principles and Practice in the Assessment and Treatment of Heritage Structures-

SOLD OUT! Waiting list only.
Sponsored by the APT Preservation Engineering Technical Committee
8:00–4:30  Sunday and Monday, October 26 & 27

Architects and engineers who are guided by a preservation philosophy are well served with management hierarchies that allow projects to move efficiently through evaluations, diagnosis, and remediation in the face of ethical and legal (codes) challenges.

A solid preservation philosophy for heritage structures necessitates the proper assessment of the structural adequacy of heritage buildings, in conjunction with a proper interpretation and application of relevant codes and regulations. This workshop will cover this in depth, as well as present methods to implement and design structural remediation.

Facilitators will begin with establishing a common language between architects, engineers, and professionals by presenting general issues related to structural preservation:
• philosophical approaches to intervening on historic structures;
• an overview of structural systems in traditional and contemporary buildings;
• an overview of structural upgrades in historic buildings; and
• the assessment of code requirements versus the performance of existing structures.

They will then prove the need for understanding the existing structural components, how to establish a systematic diagnostic approach and how to propose appropriate solutions.

As the workshop proceeds, discussions will concentrate on
• the therapy and long term monitoring of heritage structures;
• the merits of a comprehensive analysis of historic structures before intervention;
• examples of remediation, both successful and not so successful;
• various analytical tools and methods; and
• ramifications of introducing new materials and technologies in existing buildings.

The workshop will conclude with issues of tectonics and material compatibility, tying the discussion into the overall Conference theme.

Field visits and case studies will provide opportunities for hands-on practice, to discuss the material presented, and interact with the facilitators.

Learning Objectives
Through a series of presentations and field visits outlining the challenges and opportunities regarding the treatment of heritage structures, workshop attendees should be able to:
1. Discuss the philosophies and strategies regarding engineering for heritage structures in traditional, hybrid and contemporary buildings;
2. Differentiate between performance-based design and code-based design requirements considering the context of legal necessities in dealing with codes in a balanced approach with engineering judgment;
3. Discuss structural diagnostics related to effects on components by receiving a general overview of diagnostic tools for assessing heritage structures and assessing existing structural capacities;
4. Present therapy and long-term monitoring methodologies of heritage structures based on discussions of analysis as tool, creating models, and running simulations to draw conclusions to better understand differential stresses between the structural frames, walls/claddings and interior finishes as remediation approaches are identified;
5. Discuss material compatibility concerns and related implications when using new materials for the remediation and treatment of heritage structures;
6. Provide examples illustrating a focused review of remediation approaches for heritage structures and carry on a detailed discussion regarding materials assessment.

Language: Day 1—French and English; simultaneously interpreted
                   Day 2—French and English; simultaneously interpreted
Fee: $550–Includes breakfasts, lunches and materials
Skill Level: Intermediate- mid-career professionals (engineers, architects, managers) with interest in the treatment/preservation of historical structure
Location: Château Frontenac and in the field
Transportation: Walking
Dress Code: Casual (jeans) with good walking shoes (for field trip)
Recommended Equipment: Notebook, camera and work examples for possible discussion in class
Capacity: 30
Handicapped Accessibility: Email APT for details
Continuing Education Credits: 13 hour

Sponsored by the APT Preservation Engineering Technical Committee

Timothy Crowe
John Cooke
John Dam

Donald Friedman
Stephen Kelley
Julie Maddox
Tom Morrison
Patrick Sparks
Justin M. Spivey
Shan Wo


Timothy Crowe, RA, SE, is an Associate Principal with Wiss, Janney Elstner Associates, Inc. in Northbrook, IL, USA, and is licensed as an Architect and a Structural Engineer. He has extensive experience in the investigation, analysis and repair of timber, steel, concrete, stone, and masonry systems for both contemporary and archaic structures. He has contributed to numerous technical papers regarding the evaluation and repair design for building structures and systems. Mr. Crowe currently serves as a Co-Chair of the APT Preservation Engineering Technical Committee and serves on ASTM D7 committees regarding wood materials.

John Cooke became a Partner and John G. Cooke & Associates Ltd., Napean, ON, Canada, in 1992. Prior to that, his career had taken him from Ireland to Calgary and later to Toronto. He has extensive experience with historic building envelope conservation and heritage renovations. His career has been distinguished by numerous awards and honorary appointments including the presidency of Construction Specifications Canada in 2006/07 and was conferred with a Fellowship in 2008. He was the only private sector engineer requested to review the second edition of The Standards and Guidelines for the Conservation of Historic Places in Canada. In addition, he contributes to discussions on historic masonry and mortars with CSA Technical Committees and the National Research Council Mortars Working Group. Mr. Cooke has also earned international recognition, presenting at RILEM (Réunion Internationale des Laboratories et Experts des Matériaux) Historic Mortars Conference and participating in International Construction Information Systems (ICIS) forums. He has recently lectured a postgraduate course on Historic Masonry Conservation at Carleton University in Ottawa. With more than 37 years of experience, Mr. Cooke has contributed to the conservation of several notable structures including Chateau Laurier, Ottawa; Connaught Building, Ottawa; Royal Canadian Mint, Ottawa; Chateau Frontenac, Quebec City; and Royal York Hotel, Toronto; and is presently serving as a Structural Project Manager on the West Block Rehabilitation on Parliament Hill, Ottawa.

John Dam, P.Eng, MCAHP, LEED AP, John Dam & Associates, Victoria, BC, Canada, is the principal of his own practice in Victoria, BC, specializing in the assessment and conservation of historic building envelopes and materials. Over the past 15 years, he has worked on numerous conservation projects, primarily in British Columbia, prior to completing his M.Sc. in the Conservation of Historic Structures at the University of Bath, England. In addition to his consulting practice, he is a sessional instructor at the University of Victoria, recently presenting a course on the Introduction to Heritage Materials.

Donald Friedman, PE, president of Old Structures Engineering, PC, New York, NY, USA, is a professional engineer with more than 25 years of experience in the investigation, analysis, and restoration of landmark buildings, Mr. Friedman holds a B.S. in Civil Engineering from Rensselaer Polytechnic Institute, an M.A. in Historical Studies from the New School for Social Research, is a licensed engineer and is certified in the practice of structural engineering by the Structural Engineering Certification Board. Mr. Friedman’s design experience includes the integration of modern construction into existing buildings with archaic and obsolete structural systems; repair and restoration of steel, masonry, iron, wood, and concrete structures; and the investigation of historic buildings to determine structural type and condition. In addition to Mr. Friedman’s project work, he has taught engineering of historic buildings in the Building Conservation Program at the Rensselaer Polytechnic Institute; he has spoken at numerous conferences on such topics as the structural analysis of masonry facades, providing new structural support for terra-cotta facades, and the failure of obsolete structural forms; he is the author of After 9-11: An Engineer’s Work at the World Trade Center, Historical Building Construction and The Investigation of Buildings, and the co-author of Building the Empire State and The Design of Renovations.

Stephen Kelley, AIA, SE, is a Principal at Wiss, Janney, Elstner Associates, Inc. in Chicago, IL, USA. He specializes in the investigation and restoration of historic buildings and monuments in the USA, Europe, Asia and Africa. He has extensive experience in the area of skyscrapers; churches; government buildings; masonry systems; and curtain walls and windows. Mr. Kelley was an adjunct professor at the School of the Art Institute from 2006-2011 where he developed and taught the course on Building Diagnostics as part of the graduate curriculum in Historic Preservation. He has lectured extensively on aspects of technical preservation and has written more than 30 articles in journals and edited three books on the topic. He is President of the International Scientific Committee on the Analysis and Restoration of Structures of Architectural Heritage (ISCARSAH) where he co-authored the ISCARSAH Principles and is a Fellow of APT and USICOMOS.

Julie Maddox, PE, LEED AP, is a Senior Engineer with Murray Engineering, PC in New York, NY, USA, with focus on the evaluation and strengthening design of existing buildings. She earned her B Architecture and BS Architectural Engineering from the University of Kansas and completed the Historic Preservation program at Columbia University. Ms. Maddox practiced structural engineering at Robert Silman Associates until 2012, when she was awarded an Erasmus Mundus Scholarship to complete an Advanced Masters in Structural Analysis of Monuments and Historical Constructions in Europe. In 2013, she joined Murray Engineering working on structural design and preservation projects throughout the Greater New York City area. She remains actively involved with APT and the Preservation Alumni Board at Columbia University.

Tom Morrison, PEng, PhD, is principal engineer of Heritage Standing in Fredericton, NB, Canada. He holds a Masters degree from Structural Analysis of Monuments and Historical Constructions (SAHC) masters program, and a PhD looking at seismic evaluation and rehabilitation of existing structures. Past work experience includes private consulting and work with the Heritage Conservation Directorate in Public Works. In his current position with Heritage Standing he is working with a range of structural typologies, focusing on historic buildings, and enjoying the different engineering problems that come up.

Patrick Sparks, PE, is president of Sparks Engineering, Inc., Round Rock, TX, USA, a consulting firm specializing in the investigation and repair of existing structures. He is a graduate of Texas A&M University and the Georgia Institute of Technology. Sparks is a Professional Fellow of the Center for Heritage Conservation at Texas A&M, and is an expert member of ISCARSAH, the international scientific committee within ICOMOS for structural conservation. He has had extensive experience with recovery in the wake of major disasters, and is an expert in the stabilization of critically damaged structures. Sparks has served as a director of APT and is a past president of the Historic Bridge Foundation. His most recent projects include stabilization of the 18th century Mission San Juan de Capistrano in San Antonio, Texas, the rehabilitation of the Rio de Manati bridge in Puerto Rico, and the assessment of WWII concrete structures on Peleliu Island, Palau.

Justin M. Spivey, PE, is a Senior Associate with Wiss, Janney, Elstner Associates, Inc. in Princeton, NJ, USA, where he specializes in the condition assessment, renovation, repair, and adaptive reuse of existing structures. He has worked with many National Register and National Historic Landmark properties, as well as buildings damaged by natural and man-made disasters. He holds an M.S. in structural engineering from the University of California, Berkeley, and recently taught portions of the Preservation Engineering: Theory and Practice course at Johns Hopkins University.

Shan Wo, PE, is a structural engineer and principal at Atkinson-Noland & Associates in Boulder, CO, USA, a consulting engineering firm specializing in masonry, non-destructive evaluation, strengthening, and historic preservation. She holds a BS in mechanical engineering from Cornell University. Since joining the firm in 2003, she has worked on projects that involve the assessment of modern and historic structures, design of repairs, construction administration, and laboratory research and testing.


Photo by Claudel Huot


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