WRK has nearly 50 years of combined experience in the seismic strengthening of a multitude of model building types for government, power, housing, and commercial buildings. Using our extensive working knowledge of a wide variety of seismic strengthening technics and products, we provide cost effective and creative solutions to the unique challenges of existing building strengthening. WRK experience working as both the prime consultant and as a subconsultant allows us to offer comprehensive structural engineering services from the development of the schematic design through construction.
Pearl Substation Control House Addition
Wilsonville, Oregon
This Project consisted of an expansion of the control room at the Pearl Control House. Additionally, a new restroom and kitchen area were added at the existing breezeway with new exterior and interior walls, casework, appliances and plumbing fixtures. The existing control house structure was seismically upgraded with new exterior wall finish and new roof. The area of the existing control house was approximately 3,400 sq. ft. and the area of the new expansion was approximately 1,600 sq. ft. The new expansion is a steel structure in-filled with wood framing and sheathing and finished on the exterior with metal wall panels. A new rooftop HVAC unit serves both the new and existing portions of the building.
Raver Substation Control House Addition & Seismic Strengthening
Ravensdale, Washington
Provided structural design of new 3,500 sq. ft. control house building addition at Raver Substation. Structural system included open-web steel roof framing and metal stud/plywood shear walls. Structural challenges included design of a new cable vault and tunnel to connect control cabling to switchyard equipment. In addition, a complete seismic strengthening of existing 8,600 sq. ft. control house building was performed based on provisions of ASCE-41. Both structural and nonstructural systems were evaluated and construction documents developed.
Hickory Valley Switch House Building Seismic Strengthening
Hickory Valley, Tennessee
Developed seismic strengthening measures for Tennessee Valley Authority’s Hickory Valley Switch House Building in Hickory Valley, Tennessee. The Switch House Building is a 28’ by 60’ two-story rectangular-shaped building constructed circa 1951. The seismic strengthening consisted of new CMU shear walls at the exterior with interior and exterior steel HSS strongbacks to brace the existing URM walls. Encapsulation of the existing plaster ceilings and bracing nonstructural equipment and furniture was also performed.
High Voltage Substation Seismic Anchorage
Nevada
Designed seismic retrofit anchorage of existing high voltage substation equipment for over 70 NV Transformers throughout their service territory. This highly specialized work included extensive field investigation time in order to capture the in service condition. All anchorage designs called for installation and construction activities to occur while the substations remained fully-energized. Knowledge of the substation environment and operation aspects of the effected equipment is essential for successful completion of this work.
Shelby Substation Seismic Strengthening
Shelby County, Tennessee
Performed seismic evaluation and developed seismic strengthening construction drawings for this 4,600 sq. ft. unreinforced masonry (URM) control house building in Shelby County, Tennessee. Located near Memphis, Tennessee, the site earthquake demands are expected to be very high, yet the seismic performance objective of Immediate Occupancy was needed. Creative strengthening measures were needed to allow construction of seismic strengthening while keeping the control house fully operational. As part of the project, new CMU shear walls on exterior of building were installed to avoid heavy construction activities inside the building. The building was successfully occupied by TVA without interruption during construction. Both structural and nonstructural systems were addressed to achieve Immediate Occupancy performance.
Weakley Substation Seismic Strengthening
Weakley, Tennessee
Performed seismic evaluation and developed seismic strengthening documents for this 4,500 sq. ft. unreinforced masonry (URM) control house building in Weakley, Tennessee. Strengthening measures included creative design and installation of new steel braced frames on exterior of building to minimize impacts of substation operations during construction. Building was successfully occupied by TVA without interruption during construction. Both structural and nonstructural systems were evaluated and construction documents developed.
Witherspoon Building Renovation
Portland, Oregon
Provided structural engineering services for the adaptive reuse of this 20,000 sf three-story URM building located in downtown Portland from storage space on upper floors to open office and renovation of the street level retail space. In addition, roof level was completely reconstructed to provide office and meeting room space for building tenants.
Ross Warehouse Seismic Upgrade
Vancouver, Washington
Working as prime consultant which was part of a multi-disciplinary team of consultants in the partial adaptive reuse of this existing single-story rectangular-shaped warehouse with several storage mezzanines to add an “open” concept office building with restrooms and storage. In addition to the structural seismic strengthening of this 100,400 sf building originally constructed in 1961 worked closely with BPA architects to reprogram some of the office space, convert large warehouse space into office space, add restrooms and convert heavy storage to small bin storage. Strengthening scheme included addition of new exterior steel braced frames and interior concrete shear walls. An essential building to BPA operations, this building remained fully-operational during construction and was carefully phased to minimize disruption to its occupants.
Celilo Converter Station Seismic Strengthening
The Dalles, Oregon
Design a remodel for the former degassing room to house the new HVDC protection and control equipment and accommodate consolidated office space and conference rooms. Perform seismic upgrades for areas of the main building affected by the project, interior finishes and lighting, raised floor system for degassing room, HVAC additions for degassing room, install storage and inventory system for spare parts in former clean room.
Cordova Substation Seismic Strengthening
Memphis, Tennessee
As the prime consultant, we led a multi-disciplinary team for the seismic evaluation and retrofit of the 6,000 sf unreinforced masonry (URM) control house building. The site earthquake demands at this location are expected to be very high and a performance objective of Immediate Occupancy was needed. Working in an energized facility required creative problem solving to perform the seismic strengthening while the control house remained operational. As part of the strengthening, concrete shear walls and columns were added to the exterior of the building to avoid disruption to the operations of the facility. To achieve Immediate Occupancy performance, both the structural and nonstructural systems were addressed.
"It is good to have a resource with experience to help establish a proper and accurate analysis of the equipment so as to limit cost by getting the design right the first time… WRK is not simply asking us what we want them to do, but they are trying to understand what we want to do, and then use their experience to determine the best way to get there."
Wesley Wills, Southern States LLC.
"The benefit of working with WRK is that they are creative. I work with many engineers that are very conservative–they prefer to stick to standard details. WRK brings innovative solutions and enjoys the challenge of using new technologies that might be less costly and easier to construct. Brian was trained to be innovative, and his firm operates the same way."
Jeff McGraw, MWA Architects
"What separates WRK from other firms is a working, hands-on, experience based knowledge. They’re not just theory based. Everyone, including construction crews, is impressed with WRK’s response time. When we had a question or minor changes, they responded within hours. My experience with WRK has been nothing but good."
Casey Scoggins, Tennessee Valley Authority
"I trust WRK. It isn’t about being the biggest firm, it is about getting the work done correctly."
Matt Weisensee, PacifiCorp
"WRK consistently provides creative solutions for highly sensitive projects. Approaching each project as if it is unique is highly valuable."
Casey Wyckoff, LSW Architects
"The WRK team is easy to work with, knowledgeable, and they have the credentials. They are approachable, they listen, respond and do what they can to meet our needs without argument. Over many years their work has been consistent, always learning and adapting."
Leon Kempner, Bonneville Power Administration
"I value WRK’s nuts-and-bolts approach with their ability to communicate in the field and provide constructable solutions. Historic projects can be convoluted, which can cause structural engineers to jump through hoops. This can be difficult for many engineers, but not WRK. They are great at considering and explaining all of the options with the understanding that structural isn’t driving the design."
Eric Philps, SERA Architects