Non-building Structure Design

Design or analysis of structures such as mechanical dunnage, pipe racks, stairs and stair handrails. No matter how complicated these structures may be we have the experience and software to design them or analyze existing ones.

MTA-NYCT Zerega Maintenance Facility Energy Efficiency Upgrade | Guth Deconzo, Bronx, New York

Dunnage steel support frame for new rooftop equipment to be placed on an existing roof.


Oakland University Student Center, Winter Garden Stair | Detroit, Michigan

HHA performed the structural engineering design for the Winter Garden Stair at the new student union. The stair is one of the features of the new building and includes terrazzo treads and mid landing. The mid landing is supported by a single column which makes the stair design very unique and elegant.