Topographical Survey is one of the most important and crucial activity for planning and execution of infrastructure development project and so is quality of ground survey data. ICT, being the leading consultancy organization in design and development of infrastructure projects, ensures quality surveys conducted by its own in-house survey teams. ICT has its own full-fledged Survey Division well equipped with complete range of state-of-the-art survey equipment supported by survey data processing, mapping, designing, Digital Image Processing, GIS, Remote Sensing & Photogrammetry software operated by highly qualified, well trained and experienced geospatial professionals.
In-house Geospatial division of the company has a strong crew of around 50 qualified and trained field survey teams and geospatial experts equipped with 4 Leica DGPS double frequency receivers, 4 Trimble R4 DGPS Receivers and 2 numbers of Trimble R2 DGPS receivers , 36 Total Stations, 6 Digital Levels, 22 Auto Levels, GPS-Enabled Echo-sounder and various other allied survey equipment.
In-house field survey crew has expertise to carefully plan the survey projects keeping in view the purpose of survey, accuracy requirements, the budgetary constraints and finally follow whole to part principle of survey and accordingly execute the project to successful conclusion. Remote Sensing and Digital Photogrammetry techniques are adequately used to supplement conventional ground survey techniques for mapping inaccessible and large areas by using high resolution stereo satellite images using Imagine Photogrammetry 2015 and ArcGIS software. Addition of Terrestrial/Mobile LiDAR technology is the next step to add new dimensions to the existing infrastructure of survey division.
Survey project is typically executed by establishing precise network of primary survey control points covering the entire project area using most precise GPS receivers. This network of primary control points may be further densities by fixing series of secondary control points using DGPS or Total Station depending upon the size of the project. Levels of survey control points established by GPS or Total Station Traverse are usually not accurate enough and needs to be connected to National Reference Bench Mark to assign accurate Mean Sea Level to each control point using Digital levels. Based on precise grid coordinates of primary and secondary survey control points, detailed topographical survey is conducted by picking x, y and z coordinates of all ground objects in the project area with predefined feature codes using Total Station having automatic data recording devices. Surveyed data collected by Total Station is processed to generate accurate digital maps and Digital Terrain Model of the project area to further generate digital maps on desired scale and suitable design of project components.
ICT has an excellent track record of conducting geo-spatial engineering surveys for various types of Infrastructure projects in roads, railways, irrigation, Airport, sea ports, marine, telecommunications and power sectors. The major projects successfully conducted include Yamuna Expressway, Vadodara Mumbai Expressway, Ganga Expressway and various state and national highway projects, irrigation and airport projects in India and abroad.