Contour Map

Contour mapping converts raw elevation data into lines of equal height at whatever interval a project needs — typically 0.5m, 1m, 2m, or 5m — along with longitudinal and cross-section (L/S) sheets that engineers use directly for earthwork design. Trishunya derives these from DEM data collected via drone or DGPS survey.

Contours and L/S sheets are the standard deliverable for road and railway earthwork design, canal and irrigation channel planning, and site grading and leveling schemes, where cut/fill volumes need to be calculated against a specific design grade. They're also a core input for stormwater drainage design, where the direction and steepness of natural fall determines how water will move across a site.