DGT Survey Group
3D Laser Scanning Projects

MIT Stata Center, Cambridge, MA

MIT Stata Center, Cambridge, MA.

DGT Survey was retained by the construction manager as the survey consultant for this iconic, Frank Gehry-designed academic complex at the Massachusetts Institute of Technology. Above: 3D point cloud. Below left: 3D point cloud processed with true color. Below Right: Photo of completed project.

 

MIT Stata Center, Cambridge, MA MIT Stata Center, Cambridge, MA


Harvard College Biological Research Institute, Cambridge, MA

Harvard College Biological Research Institute, Cambridge, MA.

Underground excavation is often the only means to expand existing facilities on space-constrained academic campuses. At this research facility, irregular slurry wall surfaces threatened to compromise the tight clearances required for pre-designed and pre-fabricated laboratory equipment. DGT Survey was retained to perform a topographic as-built survey of interior slurry wall surfaces. 3D laser scanning was used to map protrusions and voids, allowing the owner to correct surface tolerances and achieve maximum useable square footage.

Harvard College Biological Research Institute, Cambridge, MA Harvard College Biological Research Institute, Cambridge, MA

Central Artery Vent Tower, 500 Atlantic Avenue, Boston, MA

Central Artery Vent Tower, 500 Atlantic Avenue, Boston, MA.

During construction, this 280-foot Central Artery ventilation tower was embedded with steel attachment plates for future air rights development. DGT Survey was hired to locate each attachment plate by the developer of the Intercontinental Boston hotel, which now envelops the vent tower. 3D laser scanning produced the precise location of each plate from the ground — a much safer, quicker, and cost-efficient alternative to conventional survey methods requiring elevated work.



Boston College High School, Boston, MA

Boston College High School, Boston, MA.

3D laser scanning offers significant advantages in urban settings and on academic campuses where tight clearances make every inch count. At Boston College High School, plans called for a new building in the middle of the campus commons. DGT Survey used 3D laser scanning to verify critical clearances and avoid interference with existing buildings and structure. Left: A CAD-generated column grid was superimposed over the 3D point cloud image. The 3D scan data, which was captured at ground level, has been rotated to present a top-down perspective.


111 Westminster Street, Providence, RI

111 Westminster Street, Providence, RI.

The engineering firm hired to develop a masonry restoration plan for Providence’s historic “Superman” building had a problem. They needed an accurate, detailed map of the complex art deco facade. But the original 1928 architectural plans were outdated, and performing an existing conditions survey using conventional methods was cost-prohibitive. The solution: DGT Survey was retained to create a facade map using 3D laser scanning. The comprehensive, geometrically-correct 3D data also served as the basis for enhanced CAD line drawings.

111 Westminster Street, Providence, RI 111 Westminster Street, Providence, RI