In 2018, ProCraft was given the unique opportunity to go above and beyond while completing an underground project. Working with Sun Construction & Facility Services, we installed duct work for Seagate Labs in Longmont, Colorado. From the project’s outset, we determined that rooftop-mounted HVAC equipment would not be the most cost-effective solution. As a result, the design plan led us to installing five (5) 25-ton ground mounted RTU’s that sat over a network of 48” to 60” diameter underground supply and return air duct. This duct transitioned from below ground through existing exterior windows into the lab space. The interior duct was large and was hung tight to the structure to supply high-density computer servers.
What made this project unique and challenging was that underground duct work is not commonly done to the size levels we had to overcome. However, with careful pre-planning, forethought, and collaboration with the excavating and concrete contractors, the underground duct was embedded in hundreds of yards of concrete flow fill that supported the RTU pad at the surface.
To be efficient with our time, this was all performed while we awaited the air handling equipment. All infrastructure below ground and interior was completed prior to the installation of the major equipment arriving. In the end, the work was done safely and within a shortened timeframe.
- Longmont, Colorado
- Owner, Sun Construction & Facility Services, Inc.