Web Mapping

A control network is the framework of precisely-known points that every other survey on a project hangs from. Get the controls right, and everything that follows ties together; get them wrong, and contradictions surface for years afterwards.

Geo-Tracts establishes primary, secondary and tertiary control networks for large engineering projects, mapping campaigns and long-term monitoring sites. We use static GNSS observations referenced to the SoK passive geodetic network and processed through rigorous least-squares adjustment to deliver coordinates with declared accuracy.

Why dedicated controls matter

Without a project-wide control network, different teams (drone pilots, total station crews, contractors' setting-out teams) end up with subtly different coordinates for the same physical point. By the time the project is half-built, those small differences become visible misalignments. A proper control network eliminates that drift before it begins.

What we deliver

Permanent concrete pillars at strategic locations across the site, GNSS observation files, an adjustment report with point coordinates and standard errors, and a control diagram showing the network geometry. Every pillar is photographed and described in a control schedule that contractors can use to find them on site.

Monitoring deformations

Control networks also underpin deformation monitoring — measuring whether dams, bridges, tall buildings or unstable slopes are moving over time. We design and re-observe such networks at the intervals your project requires, and report movements with confidence levels you can act on.