Rebuilding a historic NYC townhouse from the inside out

June 29, 2010
Publication: Structural Engineering & Design
Author(s): Kevin Poulin Rebecca A. Melton

Abstract: Single-family townhouses for sale in the stylish West Village neighborhood of New York City are a rarity, and the townhouse at 112 Washington Place was a special case. During our initial site visit in spring of 2007, it was apparent that the building, built in 1832, had seen little to no maintenance for decades. Simpson Gumpertz & Heger Inc. (SGH) initially acted as a value-engineering consultant, but eventually became the engineer-of-record. To make the townhouse more appealing and sellable, several structural modifications were undertaken, such as underpinning to increase the height of the basement space, removal of long-term sag in the floor joists, and the creation of a double-height space. Pattress plates and liner walls were used to remediate cracks between party walls and adjacent facades.