"Summit Engineering has consistently
provided us with practical designs with quick
turn-around times."

Lenny Severini, Charles Leonard Steel Services, LLC

Structural Engineering Services

A Structural Engineering Success Story at 51 Islington Street in Portsmouth, NH


As a start from scratch project, the structural engineering for this exciting 45,000-SF building was special from the get-go. The five-story mixed-use building was constructed in late 2012 on the site of the old Kline’s Furniture building, which was demolished in 2010. It features up to 20 luxury residential units, retail and commercial space and parking on site.

Summit Engineering served as structural engineering consultants for this major downtown development. The upper four stories of this building are wood framed, while steel framing supports the second and first floors. Our structural engineering services helped determine that frequent window openings for the upper floors necessitated continuous tie-down systems to resist lateral loads. We also determined that the building’s street level, which houses commercial entities, utilized a minimum number of braced frames to allow flexibility in the use of the spaces. Phased construction was used to allow partial development during the winter/spring months.

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