A Jesuit high school and a luxury residential building might at first seem like odd bedfellows, until you see the ingenious mixed-use development known as 35XV at 35 West 15th Street in New York City.\u00a0 A clever deal enabled Alchemy Properties to acquire air rights from Xavier High by agreeing to place the proposed 18-story residential building on top of a new annex for the school. In April 2010\u2014seven years ago this spring\u2014Severud Associates was retained to provide structural engineering services for this unique project, which involved an array of design challenges and, ultimately, numerous inventive solutions.
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Featuring sloped columns, cantilevers, and a glass fa\u00e7ade, the tower\u2014complete with 55 luxury condos, a fitness center, lounge, and dining room\u2014sits on top of the school\u2019s six-story, granite-clad annex and adds eye-catching architecture to a tree-lined block in Chelsea.\u00a0 35XV\u2019s daring architectural design required equally bold engineering, so the team at Severud Associates applied their years of experience and ingenuity to developing structural systems that maintained the architect\u2019s aesthetic vision and also allowed the building to utilize all of its available airspace.<\/p>\n
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The school\u2019s portion of the building is framed in steel to accommodate the long clear-spans needed for classrooms, an auditorium, and music rooms.\u00a0 At the seventh and eighth levels, a floor-deep transfer \u201ctable,\u201d also framed in steel, extends 36 feet over the site\u2019s rear yard and 17 feet over the existing school building.\u00a0 Trusses support the smaller cantilever while an exposed sloping framework carries loads from the larger offset to the foundation below.\u00a0 The transfer table forms the base of the residential tower, which is composed of reinforced concrete flat plates and columns.\u00a0 Starting at the 12th floor, the tower\u2019s street-facing columns slope inward to respect zoning requirements.\u00a0 Post-tensioning in the slab at this level resists the tremendous forces at the bases of the sloped columns.<\/p>\n
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35XV earned a Gold Award for Structural Systems in the 2017 Engineering Excellence Awards of the American Council of Engineering Companies New York and the 2015 Gold Award for Excellence from the Society of American Registered Architects, New York Council, among other citations.<\/p>\n
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Throughout its history, Severud Associates has provided structural engineering services for residential buildings of every kind including private homes, public housing, luxury condos, and rental buildings.\u00a0 Some of the firm\u2019s notable residential projects include the conversion of the St. Vincent\u2019s Hospital site in New York\u2019s West Village into condominiums in a complex called The Greenwich Lane; a rental building known as 27 on 27th in Long Island City, Queens; and the Bedford-Union Armory Redevelopment, a mixed-use building that includes affordable housing, in Brooklyn.<\/p>\n","protected":false},"excerpt":{"rendered":"
A Jesuit high school and a luxury residential building might at first seem like odd bedfellows, until you see the ingenious mixed-use development known as 35XV at 35 West 15th Street in New York City.\u00a0 A clever deal enabled Alchemy Properties to acquire air rights from Xavier High by agreeing to place the proposed 18-story … Continue reading “35XV Condominium”<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":3660,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"categories":[32],"tags":[42],"acf":[],"_links":{"self":[{"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/posts\/3659"}],"collection":[{"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/comments?post=3659"}],"version-history":[{"count":6,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/posts\/3659\/revisions"}],"predecessor-version":[{"id":7486,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/posts\/3659\/revisions\/7486"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/media\/3660"}],"wp:attachment":[{"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/media?parent=3659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/categories?post=3659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev70.fiveminutes.in\/severud\/wp-json\/wp\/v2\/tags?post=3659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}