Commercial Observer Interviews Mark Plechaty About the Technical Innovations at One Wall Street

In the News

December 19, 2023

The Commercial Observer features an interview with DeSimone Consulting Engineering principal Mark Plechaty, who gives readers a peek behind the scenes at the technical―and sustainable―innovations at One Wall Street in NYC.

The conversion of the landmarked, 1.2 million-square-foot complex from office to residential involved the addition of six new stories to the existing 30-story, 1960s annex.

Plechaty describes how the use of voided concrete slabs made such an extensive addition possible by significantly reducing the weight placed upon a building that had not originally been engineered to withstand it.

Read the interview with Rebecca Baird-Remba to learn how the use of voided concrete slabs allowed DeSimone to include less reinforcement of the existing building than would otherwise have been necessary, as well as how the DeSimone structural engineering team cantilevered the bottom of the structure to avoid hitting the top of the subway station located just below sidewalk adjacent to the building.

Full article here:
https://commercialobserver.com/2023/12/how-an-innovative-construction-technique-made-one-wall-street-possible/