---
title: "Areas and 3D model of an industrial site | SensorFlight"
canonical_url: https://sensorflight.com/en/case-studies/superficies-modelo-3d-planta-industrial/
language: en
---

# How much of an industrial site sits under a roof

Industrial. Location: Çerkezköy, Tekirdağ, Turkey. Year: 2026.

An industrial facility in Çerkezköy (Tekirdağ) needed reliable figures for built and open area. The MapSurvey team photographed it from a PPK drone, vertically and obliquely, and delivered orthophoto, surface model and 3D model.

## What the project needed

To separate precisely what sits under a roof from what does not, on a site with halls, canopies, auxiliary stores and yards. That figure drives permits, insurance, taxes and any future extension, and on older plants it rarely matches the archived drawings.

## Why PPK photogrammetry with oblique flights

For area measurement the key product is a well georeferenced orthophoto: roof outlines are drawn on it and the areas are computed. PPK positioning corrects the drone trajectory against a GNSS base and reduces the number of control points that have to be measured on foot inside a working plant. Oblique passes complete the facades and overhangs that a vertical view cannot resolve, and they are what makes a readable 3D model possible. This is general knowledge of the method; the project figures are those in the specs.

## What was delivered

Three products for measuring and reviewing the plant from the office.

- **2 cm orthophoto**: Metric base for drawing roof outlines and computing areas.
- **Surface model**: Heights of halls and rooftop elements for reviewing the whole site.
- **3D model**: Virtual walkthrough of the plant for extensions, maintenance and presentations.

## If you have a similar project in Spain

Ask for the orthophoto in ETRS89 and your UTM zone, the GSD in writing, the 3D model in a format your team can open (OBJ, FBX or a web viewer) and the roof outlines as DWG or DXF if you want the areas already drawn. To quote, we need the plot perimeter as KMZ, the approximate height of the halls and any flight restrictions specific to the site.

## Technical sheet

- Orthophoto: 2 cm
- Positioning: PPK
- Flights: Nadir and oblique
- Year: 2026
- Executed by: MapSurvey, SensorFlight's technical partner

## A project by our technical partner

This work was carried out by MapSurvey, our technical partner in Turkey, measuring since 2015. In Spain, SensorFlight handles the fieldwork and the client relationship, and MapSurvey processes the data and delivers the models. Samet Bayram Gulyol, GIS expert at MapSurvey, is SensorFlight's technical lead.

See the original project sheet on mapsurvey.eu: https://www.mapsurvey.eu/projects/industrial-site-area-survey-3d-model

## Have a similar project?

Tell us the area, the timeframe and the deliverables you need and we will prepare a proposal.

- Email: info@sensorflight.com
- Phone: +34 690 00 02 13