May 19,2012
We have the experience and the resources
We have the experience and the resources
Topographic Surveys

 

Topographic Land Survey

A Topographic Land Survey (Topo) is provided to show grading and elevations of a certain area by way of contour lines. These lines are generally at one-foot vertical intervals; however, any interval can be used and is determined by the slope of the land.

Most topographic surveys are provided to civil engineers prior to designing any new infrastructure.

Topographic surveys also locate all improvements including, buildings, fences, roads, concrete, and utilities that are visible as well as underground utilities that have been located by the appropriate utility company.

If a lot topographic survey is needed, the lot lines (including monumentation) and easements will also be included on the drawing.

Route Surveys

A Route Survey is needed for a swath of land that will be used for a certain purpose such as a trail, road, water line, storm sewer line, sanitary sewer line, etc.

Photogrammetric Surveys

Photogrammetric Surveys are used for the purpose of obtaining the topography (vertical and horizontal) of a large area by the use of aerial photography.

Panel points (used for control) are set at locations that are easy to spot from an aerial photograph and have a location in X, Y, Z coordinates. Aerial photography is then taken of the area and brought to scale by using the set panel points.

GPS Control Surveys

A network of control points can be used for establishing control around a city or county. To bring this large network together, Global Positioning System (GPS) is used to get all of the control on the same coordinate system.

Colorado State Plane coordinate system of North American Datum (NAD) 1983/2000 is used for a standard coordinate system.

Dam Monitoring Device Certifications

Monitoring devices are set at regular intervals on a dam and measured horizontally and vertically for location. They are consistently measured in accordance with the client’s request to monitor any movement in the dam structure. These surveys are done using a digital level and GPS or total station for accuracy.

LIDAR

High density airborne LiDAR provides a rich source of data for planning, engineering and asset management. With point densities of up to 100 pts/m2 (9 pts/ft2) LiDAR data enables the generation of very detailed surface models as well as the extraction of surface features such as buildings, bridges, trees, and utility lines.

Applications:

  • Railroad Corridor Mapping
  • Highway Corridor Mapping
  • Pipeline Corridor Mapping
  • Power Transmission Line Corridor
  • Open-Pit Mine Monitoring
  • Landfill Monitoring
  • Stream Channel Monitoring
  • Floodplain Mapping
  • Airport Obstruction Mapping
  • Refinery and Chemical Plant Mapping
  • Hazardous Waste Site Mapping
  • As-Built Construction Mapping
  • Vegetation and Canopy Analysis
  • Accident and Crime Scene Mapping