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THE WORK

Equilibrium Engineers LLC takes its role in helping to ensure that the built environment is safe, sustainable, and resilient very seriously. 

Through our collaborative, experience-based approach, we help develop creative, cost-effective solutions on all of our projects. We realize that most new buildings employ a combination of building materials to achieve the final structure and thrive on the challenge of finding the optimal combination that meets each project's unique demands. Whether it's steel, concrete, masonry, wood or mass timber, at the end of the day it is all about finding the right Equilibrium.

What Isaac Adams, AIA of BORA Architects has to say about our work ethic:
 “ Equilibrium has an engaging and dedicated staff that welcomes the design problems and details unique to our projects”

MEDFORD, OREGON

PROVIDENCE MEDFORD PARKING

MILWAUKIE, OREGON

PROVIDENCE MILWAUKIE HEALING PLACE

Tualatin, OREGON

BRIDGEPORT MOB

happy valley, OREGON

happy valley mob

PORTLAND, OREGON

MOB 5

This nine-story, 250,000 square foot steel-framed structure is home to the Providence Integrated Cancer Center as well as multiple ancillary clinics. Due to site soil conditions, the building is founded on a deep pile foundation system. The project made the Top 20 in The Daily Journal of Commerce’s Top Project Listing.

PORTLAND, OR

Providence St. Vincent Medical Center Integrated Cancer Center, MOB 5

Since our inception, healthcare projects have been an integral part of what we do at Equilibrium Engineers. We have found these projects to be some of the most rewarding and fulfilling, as the entire premise of them is to build health and resilience into our communities.

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HEAL

MEDFORD, OREGON

PROVIDENCE MEDFORD PARKING

MILWAUKIE, OREGON

PROVIDENCE MILWAUKIE HEALING PLACE

Tualatin, OREGON

BRIDGEPORT MOB

happy valley, OREGON

happy valley mob

PORTLAND, OREGON

MOB 5

Equilibrium Engineers served as Structural Engineer of Record on this two-story, 28,000 square foot, steel-framed medical office building that utilized special concentric braced frames to resist lateral wind and seismic forces. This project was developed as part of Providence Health System’s effort to provide healthcare to communities that were geographically distant from their main hospitals. This project opened to patients in 2009.

CLACKAMAS, OR

Providence Happy Valley Medical Office Building

Since our inception, healthcare projects have been an integral part of what we do at Equilibrium Engineers. We have found these projects to be some of the most rewarding and fulfilling, as the entire premise of them is to build health and resilience into our communities.

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PLAY

WORK

IMPROVE

LEARN

HEAL

MEDFORD, OREGON

PROVIDENCE MEDFORD PARKING

MILWAUKIE, OREGON

PROVIDENCE MILWAUKIE HEALING PLACE

Tualatin, OREGON

BRIDGEPORT MOB

happy valley, OREGON

happy valley mob

PORTLAND, OREGON

MOB 5

Our team provided structural engineering for the Core and Shell of this 3-story, 80,000 square foot building as well as for many of the Tenant Improvements, including a Diagnostic Imaging Center. The iconic steel scrim screen wall highlights the main entry and allows for the main lobby spaces to receive daylight while maintaining privacy. Careful detailing of the exterior brick and glass ribbon cladding included consideration of both vertical and lateral deflections of the primary structure.

TUALATIN, OR

Providence Bridgeport Medical Office Building

Since our inception, healthcare projects have been an integral part of what we do at Equilibrium Engineers. We have found these projects to be some of the most rewarding and fulfilling, as the entire premise of them is to build health and resilience into our communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

MEDFORD, OREGON

PROVIDENCE MEDFORD PARKING

MILWAUKIE, OREGON

PROVIDENCE MILWAUKIE HEALING PLACE

Tualatin, OREGON

BRIDGEPORT MOB

happy valley, OREGON

happy valley mob

PORTLAND, OREGON

MOB 5

The most unique aspect of this new 3-story, 42,000 square foot structure is that the exterior wall system provides the vertical and lateral support for the building while serving as the exterior finish. The perimeter concrete tilt-up panels were cast with integral thin brick veneer, requiring dimensional precision and close attention to detailing at panel edges and corners. The integration of finish and structure saved time and money, allowing for the building to be constructed well within the project budget.

Milwaukie, OR

Providence Milwaukie Healing Place

Since our inception, healthcare projects have been an integral part of what we do at Equilibrium Engineers. We have found these projects to be some of the most rewarding and fulfilling, as the entire premise of them is to build health and resilience into our communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

MEDFORD, OREGON

PROVIDENCE MEDFORD PARKING

MILWAUKIE, OREGON

PROVIDENCE MILWAUKIE HEALING PLACE

Tualatin, OREGON

BRIDGEPORT MOB

happy valley, OREGON

happy valley mob

PORTLAND, OREGON

MOB 5

What does every growing hospital need more than doctors and medicine? Parking!! This new 4 level, 210,000 square foot structure addressed the growing need for on-site parking as Medford population increases. Equilibrium Engineers developed a framing scheme for adjacent 60 foot wide column-free floors utilizing castellated steel beams and composite concrete slabs. The castellations in the beams allow for natural light penetration into the middle of the structure and minimal steel costs.  

MEDFORD, OR

Providence Medford Parking Structure

Since our inception, healthcare projects have been an integral part of what we do at Equilibrium Engineers. We have found these projects to be some of the most rewarding and fulfilling, as the entire premise of them is to build health and resilience into our communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

CORVALLIS, OREGON

OREGON STATE UNIVERSITY STUDENT EXPERIENCE CENTER, INTERIOR ARTWORK

SCAPPOOSE, OREGON

PCC OMIC TRAINING CENTER

WALLA WALLA, WASHINGTON

HARPER JOY THEATRE, WHITMAN COLLEGE

NEWPORT, OREGON

OMSI COASTAL DISCOVERY CENTER

MONMOUTH, OREGON

WOU Woodcock Center for Education

Our team had its second encounter with cross laminated timber design on this new 2 story, 53,000 square foot wood framed building with faculty offices, classrooms and gathering spaces. Wood framing was selected in response to the Governor’s Executive Order 12-16 that promotes the advancement of wood products through encouraging use of them in public building construction. The structure was framed using advanced framing techniques and employed cross laminated timber (CLT) in both floor and bearing wall applications. Light-framed exterior walls were panelized and prefabricated in the shop, allowing for optimization of schedule and budget.

Monmouth, OR

Western Oregon University - Richard Woodcock Center for Education

There is something about education projects that make them some of the most fun to work on. Whether it is the youthful energy we feel when we step on those campuses, or the unique culture each campus has, having the opportunity to be a part of the creation of a place where people can learn, grow and find their path forward is special for us.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

CORVALLIS, OREGON

OREGON STATE UNIVERSITY STUDENT EXPERIENCE CENTER, INTERIOR ARTWORK

SCAPPOOSE, OREGON

PCC OMIC TRAINING CENTER

WALLA WALLA, WASHINGTON

HARPER JOY THEATRE, WHITMAN COLLEGE

NEWPORT, OREGON

OMSI COASTAL DISCOVERY CENTER

MONMOUTH, OREGON

WOU Woodcock Center for Education

Built between the expansive dunes of South Beach, Oregon, this four-building development included sleeping quarters, classrooms and dining facilities for K-8 students. Equilibrium Engineers is proud to have been a part of creating this special place where young minds can see firsthand and learn about the wonders of ecology, astronomy, science and marine life.

NEWPORT, OR

OMSI Coastal Discovery Center

There is something about education projects that make them some of the most fun to work on. Whether it is the youthful energy we feel when we step on those campuses, or the unique culture each campus has, having the opportunity to be a part of the creation of a place where people can learn, grow and find their path forward is special for us.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

CORVALLIS, OREGON

OREGON STATE UNIVERSITY STUDENT EXPERIENCE CENTER, INTERIOR ARTWORK

SCAPPOOSE, OREGON

PCC OMIC TRAINING CENTER

WALLA WALLA, WASHINGTON

HARPER JOY THEATRE, WHITMAN COLLEGE

NEWPORT, OREGON

OMSI COASTAL DISCOVERY CENTER

MONMOUTH, OREGON

WOU Woodcock Center for Education

Our firm provided the structural design of a 10,000 square foot addition to the renown Harper Joy Theatre on the campus of Whitman College. The addition included a black box theatre and a two-story wood-framed building housing offices, classrooms, and a costume shop that was constructed using advanced wood framing techniques. The theatre work included a suspended catwalk and tension grid system as well as upgrades to the rigging system in the existing theatre. Seismic upgrades were provided throughout the existing wood-framed theatre building, helping to ensure many more years of great performances within.

Walla Walla, WA

Harper Joy Theatre, Whitman College

There is something about education projects that make them some of the most fun to work on. Whether it is the youthful energy we feel when we step on those campuses, or the unique culture each campus has, having the opportunity to be a part of the creation of a place where people can learn, grow and find their path forward is special for us.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

CORVALLIS, OREGON

OREGON STATE UNIVERSITY STUDENT EXPERIENCE CENTER, INTERIOR ARTWORK

SCAPPOOSE, OREGON

PCC OMIC TRAINING CENTER

WALLA WALLA, WASHINGTON

HARPER JOY THEATRE, WHITMAN COLLEGE

NEWPORT, OREGON

OMSI COASTAL DISCOVERY CENTER

MONMOUTH, OREGON

WOU Woodcock Center for Education

The Design-Build delivery method on this project gave our firm the opportunity to showcase our ability to develop economical building solutions on projects with complex programming needs and limited budgets. Built to offer apprenticeship training programs for the building trades, including Machining, CNC Operation, Welding and Fabrication, the design demanded a solution that would give PCC ultimate flexibility to adapt the interior spaces to the needs of their faculty and the metals manufacturing industry. The result is a 32,000 square foot facility with high overhead shop space, classrooms and faculty offices.

Scappoose, OR

PCC OMIC Training Center

There is something about education projects that make them some of the most fun to work on. Whether it is the youthful energy we feel when we step on those campuses, or the unique culture each campus has, having the opportunity to be a part of the creation of a place where people can learn, grow and find their path forward is special for us.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

CORVALLIS, OREGON

OREGON STATE UNIVERSITY STUDENT EXPERIENCE CENTER, INTERIOR ARTWORK

SCAPPOOSE, OREGON

PCC OMIC TRAINING CENTER

WALLA WALLA, WASHINGTON

HARPER JOY THEATRE, WHITMAN COLLEGE

NEWPORT, OREGON

OMSI COASTAL DISCOVERY CENTER

MONMOUTH, OREGON

WOU Woodcock Center for Education

It’s not often that we get a call from an artist asking us to provide design of framework and attachments for an undulating oculus. Afterglow consists of brightly colored strips of sheet metal applied above and on the feature stair of the Student Experience Center on the campus of Oregon State University. The delicate attachments of the cladding to the stair rail and the complex geometry of the overhead oculus demanded creativity and close collaboration with the Afterglow artist. The final installation lives up to its name, as the brilliant glow from the inside of the building serves as a Welcome sign to past, current and future Beavers.

Corvallis, OR 

Oregon State University Student Experience Center, Interior Artwork

There is something about education projects that make them some of the most fun to work on. Whether it is the youthful energy we feel when we step on those campuses, or the unique culture each campus has, having the opportunity to be a part of the creation of a place where people can learn, grow and find their path forward is special for us.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

Our team designed comprehensive seismic and structural upgrades to this 3-story, 21,000 SF unreinforced masonry and reinforced concrete building that is on the National Historic Register. The building was converted from retail and office use to a high-volume courthouse with offices, locker rooms, and a mail/receiving/shipping room for Multnomah County. Implementation of the strengthening strategy included selective demolition of existing unreinforced masonry load bearing walls and existing floor systems that were not part of the historic registry but that conflicted with the space planning and function of the Courthouse. At the same time, our team was challenged to save an existing industrial crane and incorporate it into the two-story lobby.

Portland, OR

Multnomah County Central Courthouse-Jefferson Station Seismic Upgrade

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

Equilibrium Engineers designed voluntary seismic and structural upgrades of this 3-story, 30,000 SF unreinforced masonry classroom/office building that is on the Historic Register. Solutions included adding new concrete shear walls to carry seismic loads and steel stud walls as back-up support for out-of-plane seismic loads from the existing exterior unreinforced masonry walls. Thoughtful detailing of seismic improvements was required so that solutions would blend into the historic fabric of the building.

Monmouth, OR

Western Oregon University- Instructional Technology Center Seismic Upgrade

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

Our team had to get creative in helping to transform an old military dormitory into a new Welcome Center for the university. A large section of the existing second floor was removed to create an atrium space at the main entrance, and new entry vestibules were added at the front and back of the building. New steel supports of existing brick veneer were required due to the addition of large sections of storefront. The end result is a very inviting space for students to access resources and interact with each other.

Monmouth, OR

Western Oregon University- Welcome Center Structural Upgrade and Conversion

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

Tasked with developing a seismic upgrade scheme to this existing one story glass-clad box, Equilibrium Engineers developed several options for the college to consider. To accommodate the desire to maintain occupancy during construction of the upgrades, the scheme involving the addition of new external steel braced frames was selected. The frames were carefully placed on each side of the building in locations that best fit within the architecture of the building. Micropile foundations were employed so that forces from the braced frames could be resolved with the least amount of disruption to the surrounding landscape.

Portland, OR

Lewis & Clark Law School-Boley Library Seismic Upgrade

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

This project came out of a desire to modernize the look of an apartment complex that was originally designed and built in the 1970s. Once our team got involved, we also learned that another project aspiration was to celebrate garden gnomes. This project had it all—a new recreation facility, façade replacement, dry-rot and corrosion repair and a new foundation for an 8 foot tall garden gnome. Tres chic.

Beaverton, OR

Ivy Club Apartments

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

LEWIS & CLARK COLLEGE-FIELDS DINING HALL IMPROVEMENTS

BEAVERTON, OREGON

IVY CLUB APARTMENTS

PORTLAND, OREGON

LEWIS & CLARK LAW SCHOOL-BOLEY LIBRARY SEISMIC UPGRADE

monmouth, oregon

WOU: WELCOME CENTER STRUCTURAL UPGRADE AND CONVERSION

Monmouth, OREGON

WOU: INSTRUCTIONAL TECHNOLOGY CENTER SEISMIC UPGRADE

portland, OREGON

MCCH: Jefferson station

Our team provided the structural design of interior improvements and structural upgrades to this 1950s era dining hall. The vision of creating a facility that can meet the evolving needs of the student population was achieved through the addition of new windows for increased natural light and a suspended wood ceiling for warmth and connection to the park-like campus.

Portland, OR

Lewis & Clark College-Fields Dining Hall Improvements

Preserving the past and improving the future; these are the objectives we apply our creativity and expertise to in order to extend the useful life of existing structures. Finding ways to Integrate new critical structural elements into aged, often historic buildings is a challenge that yields great rewards for our engineers and communities.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

LAKE OSWEGO, OREGON

ACME CONSTRUCTION SUPPLY HEADQUARTERS

PORTLAND, OREGON

COOK SECURITY GROUP HEADQUARTERS

CARLTON, OREGON

ABBOTT CLAIM WINERY

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II PARKING STRUCTURE

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II

Equilibrium Engineers provided the structural design on this six-story, 240,000 square foot office building. The impetus for this project was the desire to centralize this health system’s administrative function in one location, essentially providing a new, state-of-the-art home. The steel framed structure with concrete core shear walls provides the space while the plaza and well-designed landscape components make it a comfortable home.

Portland, OR

PROVIDENCE OFFICE PARK II

The structural systems and materials employed in creating inspiring places for people to work in and around are highly dependent on the nature of that work. So, bring on the steel, concrete, masonry, wood and mass timber! Let us help find what WORKS for you!

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

LAKE OSWEGO, OREGON

ACME CONSTRUCTION SUPPLY HEADQUARTERS

PORTLAND, OREGON

COOK SECURITY GROUP HEADQUARTERS

CARLTON, OREGON

ABBOTT CLAIM WINERY

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II PARKING STRUCTURE

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II

To support their new office building, Providence Health System engaged Equilibrium Engineers to design this six-tier, 200,000 square foot steel-framed parking structure with buckling restrained braced frames. Castellated steel beams were designed to clear span 60 feet to offer column-free drive aisles and parking areas on each floor. The parking structure was designed to be expanded to ten levels, and three levels were added a year after the initial structure was completed.

Portland, OR

Providence Office Park II Parking Structure

The structural systems and materials employed in creating inspiring places for people to work in and around are highly dependent on the nature of that work. So, bring on the steel, concrete, masonry, wood and mass timber! Let us help find what WORKS for you!

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

LAKE OSWEGO, OREGON

ACME CONSTRUCTION SUPPLY HEADQUARTERS

PORTLAND, OREGON

COOK SECURITY GROUP HEADQUARTERS

CARLTON, OREGON

ABBOTT CLAIM WINERY

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II PARKING STRUCTURE

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II

Just like the wine it produces, this organic structure is a creative blend of materials, combined and crafted with great care. Buried into the hillside, the barrel cellar with its semi-circular assembly of precast concrete arch segments provide a buttress against significant soil forces, allowing the rest of the structure to stand on its own. The primary structure consists of over 60 unique site-cast concrete wall panels supporting a system of radiused glue laminated wood beams. This project was a collaboration in the truest sense of the word, with every structural connection developed with input and scrutiny of the Project Architect.

Carlton, OR

Abbott Claim Winery

The structural systems and materials employed in creating inspiring places for people to work in and around are highly dependent on the nature of that work. So, bring on the steel, concrete, masonry, wood and mass timber! Let us help find what WORKS for you!

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

LAKE OSWEGO, OREGON

ACME CONSTRUCTION SUPPLY HEADQUARTERS

PORTLAND, OREGON

COOK SECURITY GROUP HEADQUARTERS

CARLTON, OREGON

ABBOTT CLAIM WINERY

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II PARKING STRUCTURE

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II

Who says tilt-up buildings are not attractive? This new two-story, 27,000 square foot structure utilizes the strength and economy of tilt up construction to create a beautiful, modern workplace for CSG. The exposed steel at the building entry as well as inside the building tells how the building is made. The building houses private offices, conference rooms, a roof-top exercise room and an open manufacturing space called the Innovation Center.

Portland, OR

Cook Security Group Headquarters

The structural systems and materials employed in creating inspiring places for people to work in and around are highly dependent on the nature of that work. So, bring on the steel, concrete, masonry, wood and mass timber! Let us help find what WORKS for you!

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

LAKE OSWEGO, OREGON

ACME CONSTRUCTION SUPPLY HEADQUARTERS

PORTLAND, OREGON

COOK SECURITY GROUP HEADQUARTERS

CARLTON, OREGON

ABBOTT CLAIM WINERY

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II PARKING STRUCTURE

PORTLAND, OREGON

PROVIDENCE OFFICE PARK II

Equilibrium Engineers was retained to help design the conversion of a dated and tired existing office building into a new, modern workspace for ACME. The conversion of this 11,000 square foot building included seismic improvements, removal of second floor framing to create an atrium, complete exterior cladding replacement and interior tenant improvements. The existing floor framing was exposed to create an open, warm office environment—who doesn’t like exposed structure?

Lake Oswego, OR

ACME Construction Supply Headquarters

The structural systems and materials employed in creating inspiring places for people to work in and around are highly dependent on the nature of that work. So, bring on the steel, concrete, masonry, wood and mass timber! Let us help find what WORKS for you!

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

Our firm provided structural design of all primary structures in this new full-block park in the Gateway neighborhood in Northeast Portland. The main attraction is the free-formed gateway structure; a multi-faceted steel space frame clad with polycarbonate panels and fitted with lights. During the day, the gateway serves as a gathering space for the neighborhood, and at night it serves as a beacon of hope and community to this park-deprived part of the city. This project earned top honors in the Special Use Structures category of the Structural Engineers Association of Oregon’s Excellence in Structural Engineering Awards.

Portland, OR

Gateway Discovery Park

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

So, how do you design structures to withstand forces imparted by a 14,000 pound elephant that is over 14 feet tall? Equilibrium Engineers was called on to answer this and many more unique questions on this incredible project. Elephant Lands involved the expansion of the existing elephant exhibit from 2 acres to 6 acres, and included indoor and outdoor habitats, a guest services building, a life support building and over 3,000 lineal feet of cable barrier. This project earned many distinctions, including the first permitted use of cross-laminated timber (CLT) in Oregon, Juror’s Favorite Award of Structural Engineers Association of Oregon’s Excellence in Structural Engineering Awards, and Daily Journal Of Commerce Top Project Award.

Portland, OR

Oregon Zoo Elephant Lands

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

Due to the Elephant Lands Expansion, the Zoo Train turn-around loop had to be relocated to a portion of the site that was heavily sloped and forested. After exploring many different alignments, the final layout required nearly half of the loop to be supported on a steel-framed trestle. Our team worked closely with Civil and Geotechnical Engineers to determine the optimal placement of the supporting columns that would have the least disruption to existing trees and sensitive soils conditions. The railroad ties and rails were placed atop a faceted steel platform that was wide enough to accommodate service platforms on either side of the tracks. The steel structure was designed for multiple arrangements of locomotives and passenger cars, with careful consideration given to centrifugal forces and fatigue loading.

Portland, OR

Oregon Zoo Train Trestle

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

The rigidity of steel was combined with the warmth of wood to create this park pavilion in Madras, Oregon. The vision of a welcoming, flexible covered gathering space was accomplished through careful material selection, clean detailing and structural simplicity.

Madras, Oregon

Sahalee Park Picnic Pavilion

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

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PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

Who says structure is not art? That’s a tough argument to make when you see this provocative canopy that we engineered! The thin stainless steel roof skin is supported with curved steel plate ribs emanating from two compound-curved cantilevered columns. Designed for heavy coastal winds and strong California earthquakes, the free formed entry portal conjures images of the waves of the nearby Pacific Ocean.

Oakland, CA

Oakland Wetlands Park Shelter

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

Designed to match the style of the original clubhouse of this golf club that was founded in 1896, this wood-framed structure features two prominent gambrel roofs framing a radiused second floor balcony. The 3,500 square foot building houses the club’s pro shop as well as offices and interior gathering space.

Portland, OR

Waverley Country Club Pro Shop

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

PORTLAND, OREGON

OREGON ZOO PRIMATE FOREST

portland, OREGON

WAVERLEY COUNTRY CLUB PRO SHOP

oakland, california

OAKLAND WETLANDS PARK SHELTER

madras, OREGON

SAHALEE PARK PICNIC PAVILION

portland, oregon

OREGON ZOO TRAIN TRESTLE

portland, oregon

OREGON ZOO ELEPHANT LANDS

portland, OREGON

GATEWAY DISCOVERY PARK

It’s not every day that structural engineers are asked to design a 4,000 square foot, 42 foot tall play structure for chimps. For obvious reasons, this project is one of the most challenging and rewarding of our firm’s history. Designed to resist atmospheric icing, strong winds and even stronger chimps, this structure involved resolving cables tension forces ranging from 50,000 to 120,000 pounds into a system of directional micropile foundations as well as the adjacent Primate Holding Building. Three interior support “trees” set the form of the mesh enclosure and provide a dynamic play environment for the primates. This project earned top honors in the Special Use Structures category of the Structural Engineers Association of Oregon’s Excellence in Structural Engineering Awards.

Portland, OR

Oregon Zoo Primate Forest

Life is short-get out there and enjoy it! This is the mantra we embrace when designing park pavilions, zoo habitats and other facilities that open doors for outdoor fun. The challenges that 14,000 pound elephants or 200 pound chimps pose are ones we really enjoy finding creative ways to overcome.

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

An early-comer to Portland’s mixed-use boom, this seven-story, 190,000 square building in Portland’s Pearl District has one level of underground parking, one level of retail, and five levels of apartment housing. The bottom two levels are post-tensioned, reinforced concrete and the housing levels are of light framed wood construction employing modified balloon framing methods. The building is clad with an attractive combination of brick, metal and glass, requiring careful detailing to accommodate structural movement and thermal expansion.

Portland, OR

The Abigail

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Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

Designed as an affordable housing development, this 54 unit apartment wood-framed building sits atop a one story post-tensioned concrete podium that allows for street level parking and community gathering space. Located in the heart of downtown Beaverton, this 55,000 square foot building provides opportunities for low-income families to have easy access to mass transit, jobs and community resources.

Beaverton, OR

The Mary Ann

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WORK

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HEAL

Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

Designed and built to exacting Hilton standards, this four-story wood framed structure includes 118 guest rooms, a restaurant and lounge as well as an indoor pool. Advanced wood framing detailing was employed by our team so that both wood shrinkage effects and wood construction costs could be minimized.

Wilsonville, OR

Hilton Garden Inn

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Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

For Equilibrium, this was the first of three apartment buildings constructed on this part of Division Street in Portland, each designed with similar structural systems. This structure showcases the strength and versatility of light gage steel construction and set a new standard for multi-family developments in the City. The floors are framed with long span light gage steel joists supporting a composite concrete slab over metal deck, allowing for reasonable floor-to-floor heights and open floor plans. The highly articulated and playful street-facing elevation of this 31,000 square foot building was accomplished through integration of structural steel framing into the light gage structure. The consistent, creative use of steel was the secret to the success of this great-looking building.

Portland, OR

3339 SE Division

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HEAL

Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

Our team took what we learned from the 3339 SE Division Street project and refined the framing scheme to eliminate the steel floor joists, thereby saving costs and maximizing interior clear height in the housing units. A heavy gage composite steel floor deck was designed to span between light gage metal stud demising walls. Three stories of this 30,000 square foot structure were supported by a one-story post tensioned concrete podium.

Portland, OR

3330 SE Division

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.

portland, OREGON

3360 SE DIVISION

portland, OREGON

3330 SE DIVISION

portland, OREGON

3339 SE DIVISION

Wilsonville, oregon

HILTON GARDEN INN

BEAVERTON, OREGON

THE MARY ANN

portland, OREGON

the abigail

The last of our Division Street trifecta, the structural system of this building is most similar to 3339 SE Division. The distinguishing feature of this building are the landscaped open sections that break up the building form and make it less imposing on the street below. Careful attention had to be paid to accommodating the weight of the landscaped areas, and resolving lateral seismic and wind forces around the irregularities created by them.

Portland, OR

3360 SE Division

LIVE

PLAY

WORK

IMPROVE

LEARN

HEAL

Being part of creating comfortable, safe places for people to sleep, eat and live in never gets old for us. Whether it is a hotel, an apartment or single family home, we approach each housing project with economy, efficiency and livability in mind.