Engineering Survey

Control Survey

Typically, Control Surveys are used to establish durable, sustainable reference points to be used as the basis for and throughout a project's lifecycle and beyond. A critical aspect of this type of work is developing horizontal and vertical positions of these control points relative to a desired horizontal and/or vertical control datum.
Once the control points have been established, all subsequent survey work adhering to the control survey will be uniform and seamless for further use in engineering, planning, and land development purposes.

In this way, control surveys are a foundational tool for virtually all other types of surveys, including, but certainly not limited to: topographic, right-of-way, aerial mapping, construction layout, boundary surveys, utility mapping, and structural as-built.

Topographical Survey

A Topographical Survey is an accurate depiction of a site (property, area of land, defined boundary) which is scaled and detailed according to the spatial considerations and is the summary of the on-site data capture processes.

The purpose is to gather spatial information relating to the site (natural and man-made land features). This can often be related to national Ordnance Survey grid and datum information (often using GPS) and is surveyed by point. It is typically accepted that points are positioned in three dimensions which facilitates ground modelling and visualizations to be produced from the topographical survey.

Additional information can often be integrated into topographical surveys which assists a design team in taking account of the necessary and relevant site constraints. This can include site sections through particularly diverse gradient transects, spot heights of surrounding land and site features, i.e., neighboring properties to assess overlooking, underground utilities information (from radar tracing and integrating utility records data).


This is a method of surveying which is exclusively used in determining the elevation between two points on the earth surface. Levelling deals with measurements in a vertical plane and is out rightly important for civil structures such as railway lines, highways, and canals.

We are seasoned experts on the matters of levelling and are conversant with the following categories of levelling: -

  • Profile levelling
  • Barometric levelling
  • Reciprocal levelling
  • Longitudinal levelling
  • Differential levelling
  • Cross-section levelling

Setting Out Survey

This is a survey process applied to set out the exact position of a projected structure inside the legal boundaries of a plot of land.

The objective of setting out is to set out perfect position and levels of building lines and road alignments for a projected construction work as per construction plans by applying different techniques and instruments.

We have extensive experience carrying out setting out surveys along the professional utilization of building coordinates, levels and total stations, examining form work verticality and control & computation for route surveying.

Hydrographic Survey

Hydrographic surveys encompass the science to measure and map depth and bottom configuration of water bodies (rivers, lakes and the ocean).
Typically, this information affects all the marine activities like dredging, marine constructions, offshore drilling and as tools for boundary definition in administrative context.

We have embraced sonar technology so as to enable our bathymetric surveyors be able to execute accurate and reliable hydrographic surveys.