Land & GPS Surveying
Our surveying department provides timely and accurate data by utilizing top of the line industry equipment. Trimble GPS receivers and survey controllers and TOPCON and Nikon total stations allow easy access to feature code libraries and data dictionaries that reduce human error while improving overall efficiency. With a proven record of delivering quality and accurate data, our team provides a wide range of land surveying and mapping services to fit each need, including:
GIS Data Acquisition
Horizontal & Vertical Control Networks
Boundary & Land Title (ALTA/ACSM) Surveys
Right-of-Way Determination & Mapping
Route Location Surveys
Bridge Surveys (Highway & Railroad)
Photogrammetric Ground Control
Construction Staking & Post Construction “As-Builts”
3D GPS Machine Controls
Topographic, Hydrologic, & Location Surveys
Our Work in Your Communities
Smith Creek Sewer Improvements - Raleigh, North Carolina
Surveying leads to larger sewer improvements
In the midst of rapid growth, the City of Raleigh has been aggressively investing in its wastewater systems to handle added workload. Due to surcharging and sanitary sewer overflows, the Smith Creek sewer needed to be improved.
Our team first provided the City with a Preliminary Engineering Report and an Environmental Assessment, during which we performed preliminary surveying of the existing sewer, including the survey of existing sewer infrastructure. We also partnered with a local environmental consultant to perform wetland delineations and assist our project team with the Environmental Assessment.
After an assessment of the existing sewer through a CCTV inspection, it was decided to continue using the existing line and to parallel it with a new sewer line, so a full topographic survey was performed. Point repairs and line replacements were recommended for the existing line and incorporated into the design phase of the parallel line, after which we proceeded with bidding and negotiation, and partial construction administration for the parallel and replacement of 42,400 LF of 8-inch through 36-inch gravity sewer.
The $10.5 million improvement was completed in early 2016 and our surveying efforts are currently focused on as-built surveys for the constructed facilities.
Green Mill Run Watershed Planning - Greenville, North Carolina
GPS receivers on NC CORS Network help map an exceptionally large area
The purpose of the project was to map a complete storm drainage system conveying public water within the Green Mill Run watershed. Initially the watershed had to be divided into subwatersheds using GIS analyses of LiDAR data. The project involved a scout up front to provide schematics of connectivity between storm water structures and open drainage systems within the map book. Field crews utilized the preliminary connectivity sketches to locate and collect pertinent information of individual structures. The process of field data collection for such a large project area was expedited through the usage GPS receivers operating on the NC Continuously Operating Reference Station (CORS) Network, allowing coordinates to be corrected on-the-fly. Areas of dense canopy and tall building structures had to be located conventionally with a total station. Based upon the attributes collected within the field, structures could be connected using GIS programming to allow for a network analysis and storm water modeling. Lastly, the large geodatabase of individual structures and its seamless connectivity within the Green Mill Run watershed were transferred to the modeling engineer where analyses were performed to determine areas of potential flooding.