Collinstown Business Park,
Old Airport Rd, Cloghran,
Co. Dublin.
Tel: (086) 812 1988/820 9828
Fax: (01) 842 8401
E-mail: donal@lenmargroup.com
Lenmar Service Location & Mapping, has been carrying out topographical and utility location surveys for engineering contractors and consultants for over seven years, providing invaluable information on the type, depth and alignment of existing underground services and presenting this information on marked-up drawings. These drawings can be used during the design phase to update utility plans and ensure safe intrusive work during the construction phase.
Service Location Surveys
The purpose of the survey is to determine the location and depth of
all underground buried services in as far as is practicable and possible
with the three location methods as follows and to plot their position
onto a topographical drawing.
Location Methods
1)
Manhole and Chamber
Survey
2)
Radio-detection
techniques
3) GPR (Ground Penetrating Radar)
As the survey progresses the positions of the detected services are marked onto the ground surface. The surface mark-out is surveyed using total station and x, y and z coordinates transfered onto AutoCAD. The information can be used to create a 3-dimensional model of the object area and various x-z and y-z sections can be created. The depth of the investigation will depend on the conditions of the site. In general, radio-detection and ground probing radar techniques will detect services up to 3.0-4.0m below the ground surface. The depth of penetration of radar can be increased but often at the expense of resolution.Lenmar has been involved in many large infra-structure projects within Ireland including Dublin Airport Projects, Iarnrod Eireann Kildare Route Project. Visit our recent projects section for more information.