Join us for our monthly meeting via Zoom as we discuss APT DC business and plan for upcoming events!

We are back with APT DC's second annual Tech Talk Series! These virtual presentations are a continuation of our annual symposium, this year with a theme of UNFORESEEN CONDITIONS.

This registration link is to sign up for all three Tech Talks at a discount. For more information on each Tech Talk or if you want to register for the Tech Talks individually, please follow the links below.

Tech Talk #1: October 16, 2025, 6:00pm–7:30pm

https://aptdc.org/event-6356152

Chris Steward (GBG Group): Working Around a Millenia of Artifacts: Navigating Unforeseen Conditions at the British Museum, London

Shawn Beckwith (Tidewater and Big Bend Foundation): South Garden, "The Gift that Keeps on Giving"

Tech Talk #2: November 13, 2025, 6:00pm–7:30pm

https://aptdc.org/event-6366723

Silvia Callegari and Meghan Page (Evergreene Architectural Arts): Beneath the Surface: Navigating Unforeseen Conditions in Fountain Preservation

Glenn Suttenfield (Quinn Evans): The Usual Suspects, the Near Misses, and the Holy Cows (!) of Unforeseen Conditions

Tech Talk #3: December (DATE TBD), 2025, 6:00pm–7:30pm

https://aptdc.org/event-6366772

Gaby Simundson and John Karras (SGH): Low-Slope Reroofing Over Historic "Concrete" Roof Decks — What is Really Under There?

Richard Off (Hoffman Architects): Masonic Hall NYC Façade Rehabilitation: Managing the Multifaceted Unexpected

*APT DC is offering one (1) AIA HSW CEU for each Tech Talk Session

**Login information for the webinar will be provided to registrants a few days before the event.

We are back with APT DC's second annual Tech Talk Series! These virtual presentations are a continuation of our annual symposium, this year with a theme of UNFORESEEN CONDITIONS.

**Please note that a webinar link will be provided to registrants a few days ahead of the event.

Chris Steward (GBG Group): Working Around a Millenia of Artifacts: Navigating Unforeseen Conditions at the British Museum, London

Learning Objectives:

• The importance of planning.
• The importance of desk study research and obtaining as much preliminary information as possible.
• Adaptability and understanding of various techniques to achieve desirable results. Within this, the importance of survey technique strengths/weaknesses.
• Demonstrate understanding of how to plan for unknowns.

Having studied geology at St Andrews, Chris has spent many years drilling in various forms. His career began working offshore drilling for oil and gas before moving on land as a geotechnical engineer providing advice for foundations. Following a brief spell with a piling contractor, he has now worked his way out of the ground and work as a Senior Project Manager for GBG. He is in the process of gaining his MRICS qualification (hopefully early 2026) and have been with GBG for 6+ years. GBG specializes in Non-Destructive Evaluation (NDE) and Heritage Surveys along with material analysis and has offices in New York, the UK, and Australia. Chris has spent many years overseeing investigations at the Houses of Parliament as part of the Restoration and Renewal Scheme (R&R) and the Northern Estate Programme (NEP). Other notable projects have included the Foreign & Commonwealth Office in London, The Shell Centre, multiple surveys of Reinforced Autoclaved Aerated Concrete (RAAC) at NHS properties across the UK, and what was identified as the first “American Construction Technique” at the Ritz Hotel, London. With the large range of building age and techniques, he is well versed in concrete, masonry, timber and steel framed buildings all of which hold unique challenges.

Shawn Beckwith (Tidewater and Big Bend Foundation): South Garden, "The Gift that Keeps on Giving"

Learning Objectives

• The value of performing preconstruction services with the selected General Contractor as a way to "learn" the building to aid with the problem solving when changes occur.
• Using preservation philosophy and existing pathways to install modern mechanical systems in a historic building with intent to retain as much original fabric as possible.
• Using pen and paper, and computer-aided design to take conceptual ideas to fruition in the field.
• Having a venue (as Tech Talks) to showcase real world situations and how seasoned professionals rely on past project experience to arrive at a workable solution when a change event is encountered.

Join APT DC for a tour of Cape Henry Lighthouse in Virginia Beach to learn about the recent stone repairs. Cape Henry Lighthouse was the first federally funded public works project of the newly formed United States government. It was authorized by George Washington and overseen by Alexander Hamilton. The Lighthouse is situated near the “First Landing” site where English settlers first set foot on their way to settle in Jamestown. Built with the same Aquia sandstone as much of Washington, D.C., the lighthouse guided sea travelers to safety for almost 100 years before being replaced in 1881. Cape Henry Lighthouse is one of six properties that Preservation Virginia owns, maintains, and opens to the public.

Recently, Preservation Virginia hired Dominion Traditional Building Group to carry out a project to repair a crack in the sandstone and replace a rusting lintel over the doorway. They, along with engineers from SGH, will talk about the history of the site, the need for the project, the challenges of the repairs, and the effect of the marine environment on historic building materials.

1.5 LU/HSW has been requested from AIA. Note: The lighthouse is located on a military base. You MUST have a REAL ID or Passport to attend. Please read the arrival instructions in your confirmation email carefully.

We are back with APT DC's second annual Tech Talk Series! These virtual presentations are a continuation of our annual symposium, this year with a theme of UNFORESEEN CONDITIONS.

**Please note that a webinar link will be provided to registrants a few days ahead of the event.

Silvia Callegari/Meghan Page (EverGreene Architectural Arts): Beneath the Surface: Navigating Unforeseen Conditions in Fountain Preservation

Silvia joined EverGreene Architectural Arts as a conservator in 2017. She has worked on a number of public and private artworks throughout the country, with a focus on architectural conservation, outdoor sculpture, and fountains. Silvia graduated with an MS in Historic Preservation from the University of Pennsylvania and is a Professional Associate and member of AIC and APT.

Meghan is an Assistant conservator who focuses on many field and studio treatment programs for Evergreene. Before joining Evergreene, Meghan completed her undergraduate and graduate studies at the University of Mary Washington and the University of Virginia. She works closely with conservators in all aspects of historic preservation work, including archival research, condition assessments, architectural and object surveys, material testing, and conservation treatments. Meghan is also a key team member with many field projects working alongside an managing our masonry and fountain partners.

Glenn Suttenfield (Quinn Evans): The Usual Suspects, the Near Misses, and the Holy Cows(!) of Unforeseen Conditions

Glenn is an accomplished architect with over 35 years of experience spanning diverse project types. For the past 20 years, he has focused on rehabilitation work for institutional clients, including universities and state agencies across Virginia. At Quinn Evans, Glenn led the construction phase of the restoration of Richmond's historic c. 1894 Old City Hall. He also collaborates with design teams across multiple offices to develop specifications for heritage, library, K–12, and higher education projects from Virginia to Michigan.

We are back with APT DC's second annual Tech Talk Series! These virtual presentations are a continuation of our annual symposium, this year with a theme of UNFORESEEN CONDITIONS.

**Please note that a webinar link will be provided to registrants a few days ahead of the event.

Gaby Simundson/John Karras (SGH): BLow-Slope Reroofing Over Historic "Concrete" Roof Decks — What is Really Under There?

Richard Off (Hoffman Architects): Masonic Hall NYC Façade Rehabilitation: Managing the Multifaceted Unexpected

Mr. Richard Off is a Partner, Senior Project Manager, Registered Architect and Supervisor within the New York office of Hoffman Architects + Engineers, a firm dedicated to the rehabilitation of building exteriors. With expertise in preservation, and enclosure systems, he oversees architectural and engineering teams complete numerous multi-million-dollar investigation and rehabilitation projects throughout the metropolitan area, several having received recognition, including multiple Lucy G. Moses Preservation Awards from the New York Landmarks Conservancy.  Prior to completing fellowships in Asia and South America, Richard graduated with a Master’s in Architecture and Urban Design from Columbia University and a Bachelor’s in Architecture from Rensselaer Polytechnic Institute. He has lectured at APTi conferences, the APT DC Symposium, Traditional Building conferences, and both his alma maters. An avid writer, he has published articles with Construction Specifier, Building Design and Construction, Traditional Building, Papyrus, Hoffmann Journal, Archinect, and Dezeen.