Red Cedar is the second of three apartment projects that we are doing as a part of the Yesler Terrace redevelopment for the Seattle Housing Authority (SHA). We performed the full-mechanical scope for the job. For the plumbing scope, we provided the solar preheat system. For the piping scope, we provided all the piping for the refrigeration and set up significant amounts of equipment. For the HVAC scope, we provided a variable refrigerant flow (VRF) system and in-unit energy recovery vents (ERVs).
General Contractor: Andersen Construction
More About the Project:
We were very in-tune with the client’s needs in how we
coordinated in the wood structure (which can be a challenge). We identified many
spaces where there was going to be constraints as far as conflicts with
plumbing, HVAC, and structural members. We were proactive in addressing all of
those issues ahead of time, so they were not issues when we got to the field.
We worked with the rest of the design team to come up with resolutions to those
problems early on. Our constructability reviews resulted in saving time on the
When we were coordinating with the general contractor, we gave special consideration to the vent terminations on the outside of the building. If you pay attention to some buildings, you can see visually unappealing vent terminations. We did plenty of work upfront to ensure that the entire project team was pleased with the type of terminations we were going to install. If something needed to change, we were going to change it in a timely matter. We also had to coordinate the framing and the overall look of the hoods.
Solar systems preheat the domestic water, so you do not have as much demand on the central boiler system. We installed about 54 panels on the roof of the building where we had to contend with the wind. The rooftop installation required extra planning to ensure a safe installation.
Booster Pump and Just-In-Time Deliveries
Red Cedar required a booster pump, and we installed it in the water entry room. The booster pump was brought out on a skid, and we hoisted it to the building. We worked with Columbia Hydronics, so they would know the specific date we needed the booster pump on site, so the system would not sit around and take up valuable space.
7th & Gilman is a mid-rise apartment complex on a six-acre space with 340 multi-family units. Apartments will be built in three buildings, with each building being five-stories tall, and will reside above underground parking garages. The scope of work includes full mechanical on all buildings associated with the project.
The Kimpton Hotel (Palladian) is a 97-room hotel in the Seattle City landmark Palladian building. The building structure needed to be updated for seismic reinforcement due to the building being historical. The emergency generator could not be installed in the existing location in the basement which was an interesting logistical challenge.
The 3rd & Lenora site is situated in Belltown near Seattle’s retail district, Pike Place Market, and South Lake Union. This 36-story mixed-use residential, office and retail space building will allow individuals to live, work, and play all within one spacious and modern facility. This project is being delivered in two phases—a shell and core and a tenant improvement phase. Auburn is the design-build contractor for both phases.
The upscale Homewood Suites by Hilton, Rowley Extended Stay is a 123-suite, eight-story hotel located off state Route 900 in Issaquah. The design-build project took an extensive preconstruction effort to help the owners get to a feasible price that would allow them to move forward with construction of the project. After almost two years of value engineering and various pricing activities, we were able to help get the project funded. Carrying the Hilton name comes with the expectancy to maintain their high standards. Working collaboratively with the owner, architect, contractor and Hilton allowed Auburn to satisfy all parties and provide a hotel built with the intention of 100% guest satisfaction.
The new, 1.15-Million-SF addition to the Washington State Convention Center doubles the capacity of the existing space by adding approximately 250,000 SF of exhibition space, 125,000 SF of meeting rooms, and 60,000 SF of ballroom space. The mechanical systems are designed to flexibly and efficiently serve the variable loads that are associated with the convention center while minimizing energy consumption. A significant amount of airflow is required to ensure proper space conditioning and good indoor air quality for the convention center occupants.
The Crane Aerospace & Electronics facility in Lynnwood is one of our area’s more established aerospace suppliers. Auburn Mechanical was the mechanical contractor on their new 12,000-SF building to develop and test the fuel flow meters used to measure the amount of fuel an aircraft’s jet engines use. These fuel flow meters are part of the LEAP-X engines that will power the Boeing 737 MAX jets. This industrial facility had several unique components that made up the mechanical scope of work, such as a Cryogenic Chiller that was capable of cooling to -87 degrees, stainless steel jet-fuel piping capable of delivering fuel at 325 degrees, and underground, welded containment piping. This project took a high degree of care due to the unique equipment and systems, aggressive schedule, and design challenges.
This design-build project was the new construction of three residential towers, a podium, and four stories of above-ground parking. The completed project is 877,000 SF. The structure consists of post-tensioned concrete on a deep pile foundation and is a mixed-use development. The project utilizes in-slab PEX water piping, which is all pre-fabricated as is the majority (95%) of D/W/V piping. The use of the Trimble device for in-slab MEP activities rapidly expedited the layout time while 3D modeling increased MEP coordination and productivity allowing us to forecast conflicts (of all types, architectural, structural, etc.) ahead of time and design accordingly.
The Project Auburn worked on this complete renovation of the Bill & Melinda Gates Foundation’s former headquarters into 80,000 SF of biotech lab and office space. The project included lab infrastructure for levels 2 and 3 for future tenants.
Phase-1 Auburn was responsible for the complete plumbing design and full 3D MEP Coordination.
Phase-2 Construction To meet this aggressive six-month schedule, Auburn completed more than 6,000 man hours of rough-in in less than eight weeks. To accomplish this, Auburn employed the use of the Trimble MEP Robotic Total Station and prefabrication at a level that is rarely engaged. The Trimble allowed for the layout of the overhead pipe racks to be completed for level 1 in one day, with simultaneous integration into 3D spooled drawings for prefabrication. These racks carry as many as ten lab services including NG, CA, CO2, VAC, D.I., LCW, LHW, TW, & Acid W&V. The complete overhead rack system was installed in four days by a crew of three, totaling over 2,800 linear feet of pipe. General Contractor: BNBuilders
Hoa Mai Gardens is a new 111-unit, low-income-housing apartment complex in the Yesler neighborhood of Seattle. The project was for the Seattle Housing Authority, and Auburn was the design-build and full-mechanical contractor. Other features of the project include a rainwater harvesting system that provides water for the toilets and the solar-powered boilers.