A GPRS Case Study

3D Laser Scanning The William Montgomery House for Historical Preservation & Adaptive Reuse

3D Laser Scanning The William Montgomery House for Historical Preservation & Adaptive Reuse

Highlights

THE BOTTOM LINE

The William Montgomery House needed as-built documentation of the historic, 220-year-old building to equip stakeholders with precise data to assess structural conditions and plan for renovations.

INDUSTRY

Construction & Renovation

SERVICE

3D Laser Scanning, Drone Surveying

LOCATION

Lancaster, Pennsylvania

PM Insight

Deliverables

Colorized Point Cloud & Drone Imagery

PROJECT APPLICATION

Comprehensive as-built documentation with 3D laser scanning and drone imagery provided insights into the condition and intricacies of this historic asset to facilitate preservation and restoration.

ASK

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Task

The William Montgomery House was undergoing preservation and adaptive reuse, completing an exterior façade restoration and interior renovation to seamlessly integrate into a new Lancaster-area Marriott Hotel under construction.

PROBLEM

  • Built in 1803, The William Montgomery House, a Federal-style stone house, was listed on the National Register of Historic Places in May 2000.
  • Exterior building restoration was planned to occur during the construction of the Lancaster County Convention Center and Lancaster Marriott Hotel from 2006 to 2009.
  • The interior design plan included incorporating the first level into the Marriott’s main lobby, while upper levels were designated as high-end meeting and hospitality spaces.
  • The client required precise documentation for renovation efforts, as traditional documentation methods would be inadequate due to the building's architectural complexity and historical significance.

Solution

  • The Montgomery House received detailed spatial data from 3D laser scanning to facilitate structural analysis and restoration planning.
  • A high-resolution colorized point cloud provided an accurate digital representation of the building exterior and interior for improved decision-making.
  • Non-contact 3D laser scan technology used a laser light projected onto the surface to collect precise 3D data points, keeping this historic site untouched.
  • Drone imagery further enhanced the documentation, offering comprehensive 3D visualization, overlaying color and texture on the point cloud for architectural analysis.

Benefits

  • 3D laser scanning and drone technology helped the team to capture delicate details and precise measurements in a non-invasive manner.
  • The William Montgomery House received comprehensive insights into the condition and intricacies of this historic asset to facilitate preservation and restoration.
  • The client was able to maintain the historical significance, architectural value, and cultural identity of the William Montgomery House within the Lancaster community, while adapting the space to modern needs and uses.
  • While revitalizing this space, important architectural elements, like the square-shaped façade and hipped roof could remain intact; and the interior updates could be planned to meet current building codes, energy efficiency standards, and accessibility requirements.

CASE STUDY GALLERY

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“Our team was more effective and efficient because of SiteMap, allowing us to provide better results from more informed decision-making.”
Alexander Valigosky
Project Environmental Scientist