Publié le 4 janvier 2026

S3D Engineering United: Expert in 3D Laser Scanning, Scan-to-BIM Services & Digital Twins for Building, Industry and Heritage

S3D Engineering United: Leaders in 3D Digitization and BIM Modeling

S3D Engineering United stands as a benchmark in the field of 3D digitization, BIM modeling, and digital twin creation for the building, industry, and heritage sectors. With a strong national presence featuring 21 agencies in France, along with establishments in Belgium and Spain, we ensure on-site proximity, optimal reactivity, and proven technical expertise.

Our Mission

Putting technology at the service of precision. We support our clients in the digital transformation of their assets, from the high-precision 3D survey phase to the delivery of BIM models with levels of detail ranging from LOD 200 to LOD 500. We also intervene in the creation of vectorized 2D plans, thermal and structural analysis, and the implementation of secure offline virtual tours.

Quality Commitment

We are certified ISO 9001:2015, and all our deliverables are covered by a ten-year guarantee, ensuring safety, compliance, and peace of mind for our clients. Our teams rely on cutting-edge technologies, including FARO S150 and FARO Blink scanners, capable of scanning up to 20,000 m² per day with millimeter precision, even in complex or dynamic environments.

Expertise and Innovation

At S3D Engineering United, we combine professional expertise, ongoing technological monitoring, and mastery of international BIM standards to address the most complex challenges. Our network of specialists, spread across the territory, allows us to intervene quickly, regardless of the site type: factories, tertiary buildings, listed sites, hospitals, logistics platforms, etc.

Who We Are

S3D Engineering specializes in capturing reality through 3D scanning, technical modeling, and transforming data into actionable solutions for the construction (BTP), industry, architecture, and heritage sectors.

With over 10 years of experience, 21 agencies in France and 2 in Spain, our network ensures optimal reactivity with on-site intervention in less than 48 hours.

Our mission:

  • Digitize existing environments to make them actionable
  • Produce high-precision deliverables within the allotted deadlines
  • Strengthen the quality of design, coordination, and technical communication

Our values:

  • Precision & rigor
  • Reactivity & transparency
  • Mastery of technical tools
  • Collaborative spirit with on-site stakeholders

Our Services and Offerings

At S3D, our team of graphic designers brings digital models to life using the best of 3D infographics to reveal all their richness and details.

Virtual Tour Online & Offline The isometric piping plan is a three-dimensional, dimensioned, non-proportional representation that offers a clear and detailed view of the network. It serves as an essential support for workshop prefabrication and on-site assembly of piping installations.

Isometric Piping Plan The level of detail refers to the amount of data contained in the model. For example: specific shapes or the location of steel pipes. LOD 100 Concept LOD 200 Schematic Design LOD 300 Detailed Design LOD 350 Construction Documentation LOD 400 Fabrication and Assembly LOD 500 As-Built

BIM Modeling LOD 100 to 500 We provide reliable input data for the study and design phases of rehabilitation projects and integrate modifications at each phase.

Real Estate Promotion and Rehabilitation 2D Plans, Elevations, and Sections Developed from the 3D survey of your structures, our plans offer reliable and precise working documents, created from the 3D point cloud of your buildings.

3D digitization of heritage and 3D surveying of historical monuments are imperatives for protecting these fragile architectures.

3D Heritage Building Digitization

Calculation Notes: Concrete, Metal, Wood, Aluminum Our engineers produce calculation notes compliant with standards for:

  • Reinforced concrete: buildings, retaining walls, bridges, culverts, reservoirs, dams...
  • Metallic structures: frameworks, platforms, stairs, mechanically welded assemblies, portals...
  • Wood structures: traditional frameworks, beams, complex assemblies...
  • Aluminum structures: lightweight structures, frames, technical supports.

Reverse Engineering Reverse engineering allows the creation of CAD files from a 3D scan of an existing product. It is used when original plans are nonexistent or lost, or to digitize a manually fabricated part for reproduction or industrialization.

Structural Calculation Note We make our engineering expertise available to provide you with precise structural calculation notes, compliant with current standards. Whether you are an architect, project manager, or developer, our services guarantee a solid technical foundation for successfully completing your projects.

Multispectral Imaging We offer innovative multispectral imaging solutions to address the challenges of industry and building. Thanks to this cutting-edge technology, we help you visualize and analyze phenomena invisible to the naked eye, for optimal management of your projects and infrastructures.

S3D Engineering supports your construction, renovation, and heritage management projects through:

  • BIM modeling (LOD 100 to 500) for complete integration into the life cycle of structures.
  • Rehabilitation: extraction of precise plans from 3D scans, updating the BIM model according to work phases.
  • Real estate promotion: graphic and technical support for design and commercialization.

We ensure reliable, interoperable deliverables adapted to BIM standards.

Reverse engineering consists of generating exploitable CAD files from 3D scans of objects or parts. This approach is crucial for:

  • Reproducing a part without original plans,
  • Preparing industrial production from a manual prototype,
  • Documenting unique or obsolete parts.

Our expertise also includes conversion to digital models, with export to all standard CAD software.

Multispectral Imaging Technical Inspections Thanks to multispectral sensors, we reveal the invisible:

  • Detection of thermal losses,
  • Structural humidity,
  • Detection of defects invisible to the naked eye.

These analyses, cross-referenced with 3D modeling, allow anticipation of risks, documentation of diagnostics, and strengthening of decision-making.

Our values:

  • Precision & rigor
  • Reactivity & transparency
  • Mastery of technical tools
  • Collaborative spirit with on-site stakeholders

Isometric Piping & Virtual Tour We create isometric piping plans from 3D surveys, useful for:

  • Workshop prefabrication,
  • On-site assembly,
  • Predictive maintenance.

We also offer online & offline virtual tours to explore complex structures remotely via enriched models, and to enhance design or operation projects.

Mechanical Modeling – DAO We model complex mechanical parts and assemblies for:

  • Design of special machines,
  • Product development,
  • Sheet metal/boiler making, valves, locksmithing,
  • Gears, motor shafts, supports, and fixings.

Our services cover design, study, and documentation, via tools like SolidWorks, Inventor, AutoCAD, and Autodesk Mechanica.

Electricity & Hydroelectricity With more than 7 modeled hydroelectric plants, we provide:

  • Drawing of LV/HV plans,
  • 3D modeling of electrical equipment,
  • MV transport line diagrams,
  • Plans for charging chambers, factory buildings,
  • Wall valves for flood spillways.

Our studies facilitate planning, analysis, and commissioning of infrastructures.

Architecture – Interior & Exterior Our architects and drafters propose:

  • Facade and layout concepts,
  • Measurements, existing/planned plans (2D/3D),
  • Realistic interior designs (furniture, materials, ambiance...),
  • High-definition and realistic renderings.

We use AutoCAD, Revit, ArchiCAD, SketchUp, and 3ds Max for fluid and collaborative production.

Services:

  • 2D Plans: levels, facades, sections, architectural details
  • Industrial drawings: machine plans, assembly, sheet metal,
  • boiler making (SolidWorks, Inventor)
  • Electrical plans (LV/HV), hydraulic, and internal networks
  • Production of execution dossiers, as-built, synthesis plans

Our References

PMEs, TPEs, large groups, institutions... trust us. References include: ENGIE, ENERCAL, DESAUTEL PROTECTION INCENDIE, Dalkia GROUPE EDF, marlier sa contrôle non destructif, SOCA, CODESYS, CLUSTER BATIMENT ECO INNOV, CINOV.

Our designs are accompanied by a Ten-Year Guarantee.

Contact Us

📞 Contact us at: 09 72 76 24 47 🌐 www.s3dengineering.net E-MAIL: contact@s3d-engineering.com