Technology will be Key in Rebuilding Notre Dame Cathedral

Laser scanned 3D image of Notre Dame; Andrew Tallon/Vassar College via National Geographic

Thanks to cutting-edge image technology, the daunting task of rebuilding a near 900 year old building will be possible. According to an article published last week in Futurism, “Thanks to the meticulous work of Vassar art historian Andrew Tallon, every exquisite detail and mysterious clue to the building’s 13th-century construction was recorded in a digital archive in 2015 using laser imaging. These records have revolutionized our understanding of how the spectacular building was built — and could provide a template for how Paris could rebuild.”

The article goes on to say, “In 2015, National Geographic profiled Tallon and his unique scanning process, highlighting his digital imaging of the Notre Dame Cathedral. For centuries, the only tools we had to measure medieval buildings and structures were primitive — strings and rulers, pencils and plumb bobs — but by turning to 21st-century technology, Tallon was able to tease out the secrets of this miraculous structure.”

For his scans of Notre Dame, Tallon recorded data from more than 50 locations in and around the cathedral, resulting in a staggering one billion points of data. Each scan begins by mounting the laser onto a tripod and placing in the center of the structure. The laser sweeps around the area in every direction, and as it hits a surface, the beam bounces back, recording the exact placement and surface of whatever buttress or column it landed on by measuring the time it took the beam to return. Every measurement is recorded as a colored dot, combining together into a detailed picture, like the color pixels of a digital photograph.

Laser scanning is helping building companies save time and money in the field. In an article published last year in Redshift, “The promise of field-accurate site conditions inside a 3D building information model is becoming a reality on construction sites and in early design discussions, thanks to better software import capabilities and newer, less-expensive field-scanning technologies.”

Image composite: Micke Tong; Redshift

To meet the growing needs of technology in the construction industry, METALCON has partnered with Pittsburgh based, United States Steel, to bring you the “USS Technology Hub” on the show floor at METALCON 2019. SUBSCRIBE for show alerts and be there first to know when registration opens. You can also make your hotel reservation now by booking with Globetrotter, METALCON’s exclusive housing partner.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.