Scope and field context
Project scope and field context
GeoView performed a geophysical survey across a concrete slab within the Orlando Water Conserv II Water Reclamation Facility. The purpose of the survey was to 1) Locate and designate conduits and small-diameter utilities within or below the concrete slab 2) Determine the design of reinforcement within the concrete slab and 3) Establish the range in thickness of the slab. The geophysical survey identified four electrical conduits within or below the concrete slab and one suspected grade beam below the slab. The locations and estimated depths of the identified utilities and suspected beam were marked on the concrete surface using spray paint and chalk. An electronic utility locator was used to determine that 2 of the 4 conduits carried live electrical current. It was discovered that reinforcing of the slab consisted of a double-layer rebar mat with the top layer on 6-inch centers and bottom layer on 12-inch centers. Average cover depth for the top layer was 1.5 inches. The thickness of the slab ranged from 10 to 12 inches. Project Services: Geophysical Survey was performed using an RD 8000 EUL and a GSSI GPR system with a 900 and 2600 mega-hertz (MHz) antenna. Results presented in markings with spray paint and chalk on the cement for immediate reference. Final report was prepared with figures summarizing study results.