Surveying & Mapping

Client/Owner: Clark/Shea Construction

Location: Dulles, VA

GPI Contact: William Orsinger, P.L.S.

Description: GPI utilized 3D Laser Scanning at Dulles International Airport to scan four 23 ft diameter bore tunnels consisting of a total of 4,300 track feet. Upon completion of an average bore and shotcrete of 250 linear feet, the lining of the tunnel was scanned. The data was processed to identify areas exceeding the 2” interior design tolerance and delivered within 24 hrs of mobilization.

Service: Survey & Mapping

Category: 3D Laser Scanning

Dulles International Airport Automated People Mover (APM) Tunnels

Client/Owner: Maryland Aviation Administration

Location: 7 Airports thoroughout Maryland

GPI Contact: Robert Kundrick, P.L.S.

Description: GPI provided analysis and reports for the Preliminary GPS Precision Approach studies for seven commuter airports throughout Maryland. The survey was performed for FAA obstruction mapping of the approach and takeoff obstacle free zone and 3D AutoCAD maps of the obstructions were delivered.

Service: Survey & Mapping

Category: Topographic

Federal Aviation Authority Approach Study

Client/Owner: HITT Contraction

Location: Potomac, MD

GPI Contact: James Shaw, P.L.S.

Description: GPI used 3D laser scanning to develop as-built drawings of the Glenstone building. These plans were used by the contractor to replace the failing limestone facade and patio in the exact position that it was failing.

Service: Survey & Mapping

Category: BIM, 3D Laser Scanning

Glenstone - Façade & Patio Rehabilitation

Client/Owner: Maryland State Highway Administration

Location: Gaithersburg, MD

GPI Contact: William Orsinger, P.L.S.

Description: GPI provided multi-disciplinary integrated mapping and modeling of six miles of highway and several large culverts along MD 117/124. The project involved survey control for the precision mapping and utility designation and field data collection in obscured areas. The project also included 3D Laser Scanning of 1,100 ft of 18+ ft diameter complex field designed culverts.

Service: Survey & Mapping

Category: 3D Laser Scanning, Photogrammetry

Maryland Highway 117/124

Client/Owner: MassDOT

Location: Somerville, MA

GPI Contact: Rob DeFrancesco, P.E.

Description: GPI is using mobile LiDAR to capture the data for five miles of urban highway in Somerville, MA. MassDOT requested GPI to produce the design survey for the McGrath Highway (Route 28) “Grounding McGrath” project which includes the removal of the elevated McCarthy Overpass viaduct.

Service: Survey & Mapping

Category: Mobile LiDAR

McGrath Highway Mobile LiDAR Survey

Client/Owner: MTA Long Island Rail Road

Location: Long Beach, NY

GPI Contact: Deborah Chase, P.E.

Description: GPI provided underwater inspection of numerous submarine cables and prepared of a final report to allow Long Island Rail Road (LIRR) to make informed decisions regarding exposed cables on the channel bottom.

Service: Survey & Mapping

MTA LIRR Wreck Lead Bridge Underwater Survey

Client/Owner: Private

Location: Raleigh, NC

GPI Contact: Tim Schall, P.L.S.

Description: The Neuse River Pump Station was due for renovations and the existing conditions needed to be documented. GPI created the existing conditions survey plan by 3D Laser Scanning the completed space and creating a REVIT model.

Service: Survey & Mapping

Category: BIM, 3D Laser Scanning

Neuse River Pump Station

Client/Owner: Rand Contracting

Location: Washington, DC

GPI Contact: James Shaw, P.L.S.

Description: GPI used 3D Laser Scanning technology to generate the elevations of the existing site and the placement of all the piping and HVAC. The building is located in a very busy and congested area so scanning made it a quick way to collect accurate placements and measurements of the space and its elements.

Service: Survey & Mapping

Category: BIM, 3D Laser Scanning

Rand Mango Tree

Client/Owner: Mass Transit Administration

Location: Baltimore, MD

Award: Bentley Empowered Award Winner ofr Civil New Technology Adoption

GPI Contact: William Orsinger, P.L.S.

Description: This is a raw image of a 3D Laser Scan Point Cloud of the Shot Tower Subway Tunnel interior in Baltimore, MD. GPI performed 3DLS in conjunction with conventional survey for the Mass Transit Administration to assess the value aquiring data in a short period of time, minimizing the amount of tunnel access time and track closures.

Service: Survey & Mapping

Shot Tower Subway Tunnel

Client/Owner: Massachusetts DCR

Location: Boston, MA

GPI Contact: John Watters, P.E.

Description: GPI provided 3D Laser Scan survey of the entire South Bank Bridge site for the initial bride design. The point cloud was extracted and used in the creation of existing condition plans, 3D surfaces, clearance envelopes and construction simulations.  Since crews did not have to enter railroad property or use a boat 3DLS greatly increased worker safety.

Service: Survey & Mapping

Category: 3D Laser Scanning

South Bank Bridge 3D Laser Scan

Client/Owner: SUNY Brockport

Location: Brockport, NY

GPI Contact: Rob DeFrancesco, P.E.

Description: GPI performed masonry façade evaluations and proposed structural repair work at Bramley, Briggs and Perry Halls on the SUNY College at Brockport Campus. GPI utilized 3D Laser Scanning to develop and assemble construction documents, while the he façade evaluations were performed using high resolution imagery captured via drones, reducing costs and improving safety.

Service: Survey & Mapping

Category: Drones

SUNY Brockport 3D Laser Scan and Drone Survey

Client/Owner: Navarro & Wright

Location: Upper Marlboro, MD

GPI Contact: James Shaw, P.L.S.

Description: GPI used 3D Laser Scanning technology to map the existing conditions at a WSSC Treatment Plant that was being renovated with additional equipment. The scan allowed one complete point cloud model used to locate the new equipment which minimized conflicts.

Service: Survey & Mapping

Category: BIM, 3D Laser Scanning

Washington Suburban Sanitary Commission

 

 

RELATED SERVICES
  • 3D Laser Scanning
  • As-Built Conditions
  • Mobile LiDAR
  • Robotic

 

  • Construction Stake-Out
  • Drone Mapping
  • Photogrammetry
  • Topographic Survey
  • Alta Surveys
  • Interior Space/BIM
  • Right-of-Way
  • Transmission Lines