How A Topographic Survey Can Benefit Construction Industries

A topographic survey is a data collection technique that collects information on contour points and other elevation features. This includes natural and man-made structures, tree cover and any contour changes. Topographic surveys are a key feature for construction industries since they help to understand the amount of levelling and grading needed. Land surveyors used a variety of equipment and methods to obtain the data, which has a multitude of benefits. 

Hydrographic surveys can be used to map data on seas, lakes or any water bodies. LIDAR or drone surveys can be carried out in the air to study the surface via photogrammetric mapping. They can also be carried out underground, which can of useful to the mining and quarrying industry.

Get A Deeper Understanding of the Land

Using 3D mapping and satellite imagery, surveyors can create an accurate and precise replication of the land data. 3D Laser scanning can be used to create a smaller scale model, which can be used to determine the positioning of buildings. Digital Terrain modelling can help create a digital representation that provides 360-degree imagery of the site.

Find Any Hidden Information

Topographic surveys can also be carried out to find what lies below the surface. With the help of SONAR or Laser scanning, anything below the surface like metal, oil or buried elements can be found. To find out soil type and depth, holes are drilled and the samples collected are studied to give an accurate representation of the shear strength of the soil.

Create A Database

Once you have created a database of information, this can be sent out to engineers, architects or government agencies for obtaining drawings or permits.  Based on this, architects can suggest proposed plans and layouts.

Study Any Changes Over Time

Land and water features can change over time. Getting an accurate mapping of the data means that you will be aware of any changes that take place, including any newer or replaced man-made structures. This can be of great help to geologists as well who wish to study weathering effects.

Find the Right Way For Mines

Soil is composed of many layers of strata and not all may be equal in terms of their load-carrying capacity. This is of singular importance for those looking to drill holes or create mines and quarries. By conducting an underground survey of the strata, the composition and bearing capacity of the soil can be found out as well. Based on this information, experts can suggest the best directions for tunnelling.

Topographic surveys can be presented in the form of digital terrains, a 3-D laser-cut model, photographic records, point clouds or CAD data. These digital terrains can be used by architects to obtain realistic renders of any buildings that could be constructed on it. This helps create estimates related to land moving, drilling and grading. Surveying does not only have to be related to topographical features but can be of many types. Cadastral survey studies land ownerships, whereas Geodetic surveys measure the earth’s curvature. Other types include mining, aerial and engineering surveys.