We provide insightful, collaborative structural engineering design solutions for the creation of safe, healthy, and inspiring structures.
We provide insightful, collaborative structural engineering design solutions for the creation of safe, healthy, and inspiring structures.
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Outer Banks Pavilion
~Engineering a Timber Pavilion on the Roanoke Sound~
Sixteen timber piles, eight feet of salt water, and a forty-foot cone of Douglas fir on North Carolina's Outer Banks.
Project and photo credit @newenergyworks timberframers and the Madman Himself, Master Builder, Daryl Hood.
Most of our work rises out of the ground. This one rises out of the water.
At the end of a long raised walkway, out in a salt marsh on Roanoke Sound off North Carolina's Outer Banks, stands a new timber pavilion we had the privilege of engineering. It is forty feet in diameter, built and raised more than eight feet above the salt water, and it is, plainly, a beautiful thing.
The structure is honest about what it is. Sixteen forty-foot Southern Pine poles are driven deep into the salt-marsh mud to find their footing. Above them, a Douglas fir roof structure fans out into a true cone — 400 individually milled trapezoidal planks, each grooved on both edges and joined with custom splines so the geometry closes cleanly the whole way around. Every piece had to be cut to plan, because a cone does not forgive improvisation.
The engineering problem was the environment as much as the form. Piles in soft marsh, a corrosive saltwater setting, coastal wind, and a conical timber roof with no interior structure to hide behind — all of it had to be resolved so the architecture could stay pure and the thing could stand for generations. That is the kind of problem we live for: where the structure is the design, not a compromise to it.
It was also a genuine collaboration across the country. New Energy Works designed and fabricated the timber frame out of their Oregon and New York shops; builder Daryl Hood set it in place with one helper and a great deal of nerve; and GEBAU provided the structural engineering. Sixty hours of phone calls and a hundred emails between people who, in some cases, had never met — and it went together right.
We do extraordinary buildings, in the high country and, occasionally, over the ocean. If you are imagining something hard and beautiful, we would love to help you build it.
check out our work featured in Modern in Denver's Summer 2025 issue!
in memoriam
Dear Friends of John and Our Extended GEBAU Family:
It is with great sadness and reverence that we share the passing of our founding partner John David Arndt. John died peacefully on Saturday, April 26, 2025 in the care of hospice and presence of his partner and two daughters in Boca Raton, Florida. He battled a progressive lung condition for the last couple years.
John retired about four years ago and spent more time in his beloved Hope Town abode, dropping into Boulder for stints when the weather was fair, and visiting his grandkids in Seattle. He continued working with GEBAU for special and ongoing projects, and his contributions were always invaluable. John was unparalleled in our engineering community, and in the greater community in so many ways.
We already feel lonely without him, but we recognize what a gift and a privilege it was to have him in our lives, to work alongside him, learn from him (technically, stylistically, and philosophically), and to witness the grace, skill, courage, spirit, and joy with which he worked and lived. John consistently made great challenges appear effortless. John will be missed, but his impact will persist for a long, long time. We will strive to honor his extraordinary work and legacy well into the future.
always learning
#UPDATE! Old Firehouse is open for business!
reviving an icon
The Old Firehouse July 4, 2024
When we started work on the Old Firehouse project in Ridgway, Colorado, we didn't completely understand its magnitude, or its significance to the community that hosts it.
The idea was to gut, stabilize, restore, and build new structures around and on top of the old stone masonry shotgun building that at one time served as the local firehouse, at others hosting John Wayne in saloon scenes, studio space for renowned Colorado artists. (For more context, visit https://www.theoldfirehouse.com/)
The developer believed the preexisting site, with its premium location directly across from the cottonwood-lined town park, adjacent the revered True Grit Cafe, but bound on one corner by a CenturyLink "death ray," that this property was severely underutilized. Sadly, Patrick died before the completion of the redevelopment, but he can rest peacefully knowing that he was totally right.
The redeveloped site now highlights the charm of the original 1880s stone structure as the centerpiece of the lot, if not the entire town, with a supporting cast of new tavern/restaurant, outdoor dining and gathering spaces, an all-glass greenhouse perched on the rear half of the original structure with hydroponic gardens that will service the main level amenities, 3-season covered patio, indoor/outdoor event space, 2nd floor offices, and 3rd floor condominiums with rooftop balconies and expansive views of the snow-capped San Juans.
The structural complexity of the project was very high. Lousy soils, major displacements in the existing stone walls, space limitations, historic value, high loads, intense winter weather during construction, and sophisticated architectural features were all contributing factors.
Prominent structural systems included:
Major underpinning with deep foundations and reinforced concrete grade beams under original stone foundation walls.
Comprehensive ground improvement (in lieu of even higher-dollar deep foundations throughout the rest of the property footprint).
Wood, structural steel, reinforced masonry, reinforced concrete, you name it!
Several field trips to southwest Colorado at strategic points during construction, supplemented by knowledgeable local building inspectors, facilitated a successful construction process, performed by a highly capable and accomplished general contractor with top notch subs.
We fortuitously visited the site on the Fourth of July, 2024 and witnessed the iconic red, white & blue laden historic firetruck parked out front, nearly replicating the construction fence rendering less than 20 feet away.
Should we always be so lucky!?
# ja