GPRS Creates PDF Utility Maps for Notre Dame Stadium

• The client did not have a utility site plan reflecting the location of underground utilities.
• The client wished to permanently record this information in a reusable and accurate format, for ground penetrating radar markings can become worn and eventually removed from pavement throughout construction work and general pedestrian traffic.
• It was important to accurately locate and document these utilities to eliminate potential problems during stadium renovations.

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• GPRS utility locators used ground penetrating radar (GPR) and electromagnetic (EM) locating to detect and map active conduit, water, and sanitary sewer lines inside the stadium.
• Once the utilities were marked, the GPRS Project Manager used a Leica laser scanner to accurately capture the location of the utility markings. The Leica laser scanner can record GPR markings in low lighting conditions.
• The GPRS Mapping & Modeling Team utilized the point cloud from laser scanning to create PDF utility maps of the stadium.

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• A utility locating map provides the stadium the exact location of underground utilities to better plan for construction, renovation, or excavation projects.  
• By having an accurate record of the location of markings, the client will be able to refer to the drawings even after markings fade.
• Knowing where utilities are located helps avoid strikes during construction, which could lead to serious accidents, injuries, service disruptions, and repairs.
• Although not the primary target of acquisition, other structural and architectural features were captured in the 3D laser scan data and could be used by the client or owner for other projects in the same space.

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