Survey Works

Construction is a complex and unique task that needs planning, execution and finishing.  All the construction works are done by fulfilling certain requirements by surveying the construction sites

 During a construction project, there is always a risk of unforeseen events hence; our special staff is devoted to do the Survey Works so that accidents can be limited during the construction works. A good planning of the construction project depends directly upon a good survey that is done prior to the construction work is begun. It gives the constructors a roadmap towards the completion of the project.

When the survey work is perfectly done, it becomes easy to take the decisions during the construction. So, you don’t have to face any unexpected delays in your project. Also, when a problem arises during a construction work, it hinders the overall time period of the project which can be costly. Our technicians are diligent and carry out all the essential survey work in a controlled environment. All of these services are provided to you at justified rates which are affordable for anyone. So, hire our highly professional technicians for your pre-construction surveys and execute your project safely.

 

Types Of Surveys

  • Alta/Acsm Survey
  • Boundary Survey
  • Construction Survey
  • Location Survey
  • Site Planning Survey
  • Subdivision Survey
  • Topographic Survey

 

Surveying Techniques

  • Gps Survey
  • Total Station Survey
  • Theodolite Survey
  • Dumpy Level Survey
  • Utility Surveying
  • Traffic Surveying
  • Contour Mapping

 

Gps Survey

GPS stands for global positioning system, and it uses signals from satellites to pinpoint a location on the Earth’s surface. In addition to transmitting information about location, GPS can provide data about velocity and time synchronization for various forms of travel. GPS uses at least 24 separate satellites in a system that consists of six Earth-centered orbital planes, each having four satellites.

Generally speaking, GPS has five key uses:

  1. Determining a position (location)
  2. Moving from one place to another (navigation)
  3. Monitoring the movement of a person or object (tracking)
  4. Creating a map of an area (mapping)
  5. Making precise time measurements (timing)

 

Total Station Survey

A total station is an optical instrument used in modern surveying. It is a combination of an electronic theodolite (transit), an electronic distance meter (EDM) and software running on an external computer known as a data collector. A total station allows the surveyor to store all information he needs to establish a setting out and can store all information taken from the site as existing features, original ground levels, road edges, etc. Also the remote measurements are facilitated by the total station where direct access is not available. For example the height of street light poles, ground clearance of overhead power lines, etc.

 

Theodolite Survey

 Theodolite is used for measuring angles, scaling points of constructional works. For example, to determine highway points, huge buildings’ escalating edges theodolites are used. Depending on the job nature and the accuracy required, theodolite produces more curves of readings, using paradoxical faces and swings or different positions for perfect survey measuring.

The Following are the major uses of theodolite: 

  • Measuring horizontal and vertical angles
  • Locating points on a line
  • Finding the difference in the level
  • Prolonging survey lines
  • Ranging curves
  • Setting out grades
  • Tachometric surveying

 

Dumpy Level Survey

A dumpy level is an optical instrument used in surveying to transfer, measure, or set horizontal levels with reference to the mean sea level or available approved data. The instrument and staff are used to gather and/or transfer elevations (levels) during site surveys.

Measurement generally starts from a benchmark with known height determined by a previous survey, or an arbitrary point with an assumed height.

 

Utility Surveying

Utility surveying is the process of identifying public utility mains that are located underground. Utility surveying accounts for lines that serve telecommunication, electricity distribution, natural gas, cable television, fiber optics, traffic lights, street lights, storm drains, water mains, and waste water pipes. Also, in most cases, major oil and gas pipelines, national defense communication lines, mass transit, railways and road tunnels etc. run beneath the ground level.

Since different types of underground utilities are made of different materials, different kinds of detection and location methods have to be used.

 

Traffic Surveying

Traffic surveying involves the determination of the vehicle numbers, types, vehicle speed ,as well as trip length, trip purpose and trip frequency.

Transportation planning based on the results of an in-depth traffic survey could directly contribute to better efficiency and life of roads, provide better means to utilize other roads in case of special events in the locality, and altogether help the development of roads and infrastructure.  

 

 Contour Mapping

Contour map of an area serves as the direct indicator of the ground profile at that area. Many times in the case of site suitability studies, an engineer has to analyze the contour map of the area, and identify the nature of the ground, and finally work out the suitability of the site for the project works to be taken up. A contour map helps in finding out the depth of cutting and filling, if the formation level of the road or railway is decided. The routes of the road, railway, canal or sewer lines could be planned such that the earthwork and excavation are minimized and balanced with the help of such an analysis. From the contours, it is possible to determine the capacity of a reservoir. The stock volume of materials that are piled up on the ground (e.g.: quarries) could be estimated using the values provided by a contour map of the area. Further, in the hydrology domain, a contour map helps calculate the catchment area and reservoir capacity, hence the quantity of water flow at any point of a water body which is useful in pointing out the flood levels of the concerned water body.

Updated on: Sat 04 Dec 2021