Utility Mapping Surveys
Rook Services provide an array of utility mapping surveys. Utility mapping is the process of gathering information from statutory searches, through to on site surveying using the latest electromagnetic EM and ground penetrating radar GPR systems. The survey team will provide you with advise on the best selection of geophysical equipment depending upon your site requirement and conditions. Our surveyors attend regular training both in house and externally to ensure that they are highly trained and skilled in detection and location, using a variety of mapping equipment. Ensuring that all projects are delivered within our robust quality systems we can ensure that we provide you with outstanding, industry leading service. Our utility mapping services all conform to the PAS128 specification to give you the confidence of what is below ground.
Utility mapping Services
Feasibility Studies – By engaging with Rook Services at any stage in your project from early conception we can deliver best advice and guidance on aspects of utility mapping and dedicated a single point of contact for a more personnel service.
PAS128 desktop Searches (Pas128 QL-D) – A compilation of all of the utility providers assets within you defined work boundary. PAS128 utility reports can be provided to a budget and delivery that is suitable for your project complexity and constraints.
PAS128 Reconnaissance surveys (PAS128 QL-C) – Post collation of the Desktop utility search, the utility record search data is compiled along with on site reconnaissance where utility street furniture and onsite observations are plotted to a best fit.
PAS128 Utility mapping surveys (PAS128 QL-B) – An on site Utility mapping survey utilizing multiple geophysical instruments for example Electromagnetics EM and Ground Penetrating radar to assess the Horizontal and vertical accuracy of the detected utilities. Quality levels 1 – 4 (QL1-4) would be assigned to each of the utilities detected.
PAS128 Utility mapping surveys (PAS128 QL-A) – Verification of utility positions/depths by pot holing, hand dug trial pits, vacuum excavation and/or lifting of Utility apparatus to verify the the required data.
Bore hole clearances – small areas surveys utility EM and GPR either marked on site or post processed and setout at a later date.
Concrete Surveys – Utilizing GPR to detect rebar depth and location, rebar spacing, concrete cover thickness, concrete slab thickness, locate post tension cables, utility ducts, electrical conduits, heating pipe and voids.
Array Surveys – Utilizing the latest multi channel dense array GPR systems, data can be collected over very large areas, within live traffic, quickly and efficiently. Dense data sets allow for 3D imaging of the subsurface, to assist both practitioner and client to determine any areas of risk within their projects. GPR Array mapping can be completed on foot, with an ATV and with larger vehicles (4x4s or LGVs). Array surveys are specifically used for wide area utility mapping and just as importantly looking for obstructions, pile caps, tanks, voids, archeology, road layer analysis and moisture mapping. Array data uses GPS RTK positioning to allow the experience team to process the data offsite and deliver the results in a variety of datasets depending upon your requirement.