Notre‑Dame Reconstruction: Oak, Lead, and Laser Survey

Reconstruction married traditional craft to digital precision. Teams rebuilt oak frameworks, lead coverings, and the fleche with guidance from dense laser scans.

🪵 Materials & Craft

• Oak carpentry: Scribed joints; mortise‑tenon joinery.
• Lead roofing: Layered sheets and standing seams.
• Stone dressing: Match grain and porosity of originals.

🛰️ Survey & Alignment

• LiDAR meshes: Point clouds align frames to millimeters.
• Photogrammetry: Texture maps support documentation.
• Monitoring: Sensors track movement and moisture.

📋 Site Logistics

• Crane choreography: Sequenced lifts to avoid clashes.
• Material staging: Weather‑safe zones.
• Visitor safety: Controlled perimeters.

[^craft]: Workshops train new artisans in medieval and modern techniques.