Insight designates the existence and approximate horizontal location of buried utilities in compliance with CI/ASCE 38-02 Standard Guidelines for Depiction of Existing Subsurface Utility Data. This investigation is accomplished by using both active and passive utility detection equipment. Ground Penetrating Radar (GPR) is available for finding utilities considered not identifiable. Insight provides utility designating and mapping on sites not covered by the One Call System such as military bases, campus environments, universities, office and industrial complexes.
Utility mapping can be divided into the levels of service required. Utility records research provide approximate utility location, further utility location can be obtained via utility designating and utility locating services.
Field run surveys providing precise horizontal and vertical locations of underground utilities
Performed to CI/ASCE 38-02 specifications
Planimetric drawings in an AutoCAD format
Ground penetrating radar (GPR) is used to help locate utilities that are considered non locatable. GPR is a non-destructive geophysical method of producing a cross-section profile of ground surface with reflections of subsurface geologic units and objects. With dual-frequency antenna sweeping in two frequencies simultaneously, we are able to see both shallow and deep metallic and non-metallic pipes and cables.
Imaging of utilities 19’ deep in certain soil conditions
Locating underground utilities made of plastic, terra cotta and other non-metallic materials
Detecting underground storage tanks, construction debris, depth of bedrock and water table, paving thickness and geologic features
Concrete scanning provides rapid results using a non-invasive method of detecting rebar, post-tension cables, metallic and non-metallic conduits as well as current carrying wires embedded in concrete or below concrete. Concrete scanning imaging is a method used on curved surfaces including columns.
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Recent revisions to the DC Water Project Design Manual Volume 3 - Linear Infrastructure Design July 2018 require subsurface utility engineering. -- DC Water Project Design Manual Volume 3 - Linear Infrastructure Design, July 2018