Three proposed Northwest projects are among the six winners of the 2022 Mass Timber Competition: Building to Net-Zero Carbon, a contest funded by the Softwood Lumber Board and USDA Forest Service. The contest awards a total of $2 million to the winning projects in an effort to advance low-carbon mass timber construction in the U.S.
Local winners are the Alaskan Copper & Brass warehouse in Kent; Killingsworth, a community-centric office in Portland; and Vancouver Ambulatory Care Center, a medical center in Clark County.
atelierjones image from SLB [enlarge] The Alaskan Copper & Brass warehouse will have CLT panels, and glulam beams and columns.
Alaskan Copper & Brass Co.'s proposed project is a 42,456-square-foot warehouse for its Kent campus, which is closer to employees' homes than its South Seattle operations. This is expected to reduce commute times, as well as transportation, parking and transit costs for current and future employees.
The single-story warehouse will be built with cross-laminated timber panels, and glulam beams and columns. Project backers say this will be the first warehouse to use mass timber on a large scale in the Kent Valley, which is dominated by traditional tilt-up concrete/bar-joist and pre-engineered metal buildings.
The project will evaluate several all-wood and wood-hybrid structural systems to identify cost-competitive options to traditional forms of construction, with the goal of providing developers a more sustainable way to build that will reduce their carbon footprint.
An initial comparative carbon impact analysis of this project showed a 33% reduction in emissions over a traditional warehouse.
The project team includes atelierjones, Foushee, Timberlab and DCI Engineers.
Image from SLB [enlarge] The Killingsworth building will be mass timber with a rocking shear wall system.
Killingsworth will be a three-story, 18,780-square-foot building exclusively used as creative office space. Amenities include bike parking and showers, expansive terraces and a ground floor courtyard. The project site is in a Portland neighborhood that was subject to discriminatory lending practices, including redlining, which contributed to the lack of investment in the area for the latter half of the 20th century. It's now within a Small Business Administration HUBZone, which focuses on fueling small business growth.
The project is intended to create an inclusive work environment and to house businesses that value diversity, equity and community wellness. It will promote social equity with a goal of 30% of the subcontractors building the project to be BIPOC- and women-owned businesses. Additionally, the development team has a goal of 50% of the project's equity obtained from women and/or people of color.
The goal of the building's structural design is to prove the rocking shear wall system and become a demonstration project of how this technology can exceed code and provide a cost-effective seismic solution for buildings between three and 12 stories.
Using mass timber for Killingsworth will result in a carbon benefit of 407 metric tons of carbon dioxide — equal to taking 86 cars off the road for a year.
The project team includes Adre, Lever Architecture and Holmes US.
Image from SLB [enlarge] Vancouver Ambulatory Care Center will use cross-laminated timber panels and glulam timber throughout.
PeaceHealth's plan to use a mass timber structural system for its Vancouver Ambulatory Care Center harks back to the health care provider's roots as a hospital for loggers, mill workers, fishermen and their families over a century ago. The four-story building will be 176,000 square feet, and will use cross-laminated timber panels and glulam timber throughout.
The new medical center will provide an innovative experience for patients and caregivers. By creating an inviting campus that promotes community health and wellness, the medical center will support community education, gathering spaces, and partnerships with local organizations and businesses. This includes opportunities for education and collaboration with nearby schools.
A structural life-cycle analysis of the project shows 1,600 metric tons of carbon dioxide reduction by using mass timber over steel for the structure. Another 1,600 metric tons of carbon dioxide is realized when considering the biogenic storage benefits of wood.
The project team includes ZGF, Timberlab, Swinerton and PCS Structural Solutions.
Other winners of this year's contest include: Return to Form, a high-rise multifamily building in Denver; Evergreen Charter School, a K-12 school in Hempstead, N.Y.; and Intro Cleveland Phase 2, a 16-story mass timber multifamily building in Cleveland.
“The SLB is gratified to see the breadth of concepts and building typologies entered in the competition. With nearly 60 submissions, we saw excellent examples of the innovative designs mass timber makes possible,” said Ryan Flom, SLB chief marketing officer, in a statement. “These six winning designs will serve to advance not just our body of knowledge for mass timber construction, they will inform the growing shift towards building for occupancy well-being, resilience, and a minimal carbon footprint.”
WoodWorks, a nonprofit staffed with structural engineers, architects and construction experts, managed all aspects of the competition including project evaluation by an independent judging committee. Expert judges representing architecture, engineering, construction, real estate development, forestry and sustainability selected the winners. Among the nine judges was Anne Schopf, a partner at Mahlum.
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