Our Team

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Erik Anders Nelson, PE, SE


Erik has been working in the engineering and construction industry since 1996 and started Structures Workshop in 2008. He has helped design over 1000 structures ranging in scale from small houses to baseball stadiums and high rises.

Erik is an adjunct professor in the Architecture Department at the Rhode Island School of Design. He has also taught engineering courses at University of Massachusetts and MIT. He reads and writes about the intersections of engineering with philosophy, art and architecture and continues to publish articles in Structure Magazine, Civil Engineering Magazine, and Modern Steel Construction Magazine. Erik is the President of the Structural Engineers Association of Rhode Island (SEARI).

Bio / CV


Ethan P. Tirrell

Project Engineer

Ethan has been professionally active in the construction industry since 2006. He started out as a carpenter in high-end remodeling and renovation until 2010, when he kicked off his structural engineering career here at Structures Workshop. Ever since, Ethan has been an invested, thoughtful, hardworking, and significant contributor to the shape of Structures Workshop. His passion for engineering is rooted in an affinity for problem solving and a love for building. As a structural engineer, Ethan enjoys the collaborative nature of the design world and the active role design teams have in giving life to ideas.

Ethan is especially interested in residential construction, where attention to detail can shape a house into a home. In 2017, Ethan sharpened his skills and his attention to detail by both designing and building a house for himself in Rehoboth, MA, where he currently resides. When he is not building at his house, Ethan spends much of his time working out, playing sports, cutting down trees, hosting family-style dinners, or connecting with people. Ethan lives an active and engaged life, looking to be a “builder” in all that he does.


William Porter, PE

Project Engineer

Bill has been working in the building industry for more than 10 years. His early experience in the field includes site supervision, steel and rebar detailing and engineering design, with specific concentration on residential flood zone foundations, building damage assessment, and residential & light commercial building design.

Since starting at Structures Workshop in March 2015, Bill has led the design of new construction projects including MIT Theater Arts (Cambridge), Concord Museum (Concord), and various residential projects (MA & RI). He has also led the design of structural renovations to existing structures including the Odeum Theater (E. Greenwich), Lapham Building (Providence), and GAMM Theater (Warwick), and has designed miscellaneous metals and structural steel connections for projects such as The Hub on Causeway (Boston), Housatonic Community College (Bridgeport), and Choate Rosemary Hall (Wallingford).

Bill lives in the woods of West Greenwich with his wife, son, cats and chickens, where he is always working on project around the house or in the yard. He is an avid tabletop gamer and maintains a large collection of card & board games.

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Katherine Coumes


Katherine has been fascinated with engineering and design since childhood. Her early interest lead her to complete undergraduate in Civil Engineering and graduate degree in Construction Engineering at Cornell University in Ithaca, NY. When not engaged in engineering and design work, Katherine is active in her community. She volunteers at the Providence Public Library and the Boston Children’s Hospital Rooftop Garden. She is a lector at the Cathedral of Saints Peter and Paul and helps tutor immigrants to pass the United States citizen exam through the Diocese of Providence. Katherine also ushers at Trinity Rep and The Gamm Theatre; she recently helped the latter move to their new building. Katherine considers herself a definite geek and loves reading, writing, gaming, crafting, costuming, live theater, and traveling.


Yuran Tavares


Yuran was born in Cape Verde, an archipelago located on the west coast of Africa; he immigrated to this country with his family at the age of fourteen. He earned his bachelor’s degree in Civil Engineering from the University of Massachusetts Dartmouth. He enjoys working at Structures Workshop because it is an innovative firm that cares about design and client goals. In addition to engineering, Yuran is very passionate about fitness and health. He enjoys playing soccer and being around his family and friends. Yuran’s ultimate life goal is to give back to his homeland by using his engineering skills to improve building designs and infrastructures.


Hamed Abshari


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