Laser Scans at the Bristol Hotel – April 2017

WEAVERCOOKE recently finished demolition on the interior of the Bristol Hotel, a building on the National Register of Historic Places. Because we have demolished all of the pieces of the building that will not remain through construction, measurements are much easier to make than at the outset of the project. Hoping to take advantage of this, WEAVERCOOKE sent our Virtual Design and Construction team out to run laser scans of the building.

Historic renovation projects create some of the best applications for laser scanning technology, which can provide precise measurements, with a typical accuracy of +/- 1/8” within 350 yards of the scanner. The scanner uses light to render a 3D Point Cloud, which can be used the same way a typical BIM model can. This allows us to verify the accuracy of the drawings we’re working from and run clash detection long before we would run into these problems in the field.

Laser scanners have the potential for use beyond just historic renovation though. Recently, at the Battery Park Hotel in Asheville, NC, we poured a slab of post-tension concrete. Before the pour, we took a laser scan of everything that would be in the slab, so that we knew the exact location of everything under the concrete. This is useful to our construction team, of course, but the data can also be kept by the developer and referenced years later during any future renovations.

Laser scan of a staircase
Exploded view of laser scan