Centennial, Colo.-based Haselden Construction was the builder of the facility. Haselden Design-Build Project Manager Philip Macey, AIA, LEED AP, helped the project team through critical design decisions based on information in the contractor’s cost model and the design team’s energy, daylighting, natural-ventilation and thermal-mass models.
“Our goal was to maximize the passive performance of this facility,” says David Okada of Stantec in San Francisco. “Then we focused on making the engineered systems as efficient as possible. Thermal and energy modeling provided the information the design-build team needed to keep the design true to the project’s aggressive goals.”
In recognition of Stantec’s engineering consulting work on RSF, the company received the prestigious Engineering Excellence Grand Award from the American Council of Engineering Companies in April.
Unique Radiant Installation
Tony Barela, project manager for mechanical contractor Trautman & Shreve, needed an ultra-efficient tool to meet the twin performance criteria of energy efficiency and cost control. “The job schedule was critical on this project,” Barela says. “Working with Haselden Construction, we knew that the five days allocated to us were not enough time to build all the radiant heating and cooling zones. It was critical we find another way.”
Working with local sales agents Tom Meek and Tobi Gibson from TM Sales in Arvada, Colo., Barela and superintendent Don Martinez devised a pre-fab plan for the radiant zones. After mapping out all zones, Trautman & Shreve purchased Wirsbo hePEX™ tubing in standard 1,000- and 500-foot rolls, then using 3-foot plastic rails (with loops in 6- to 10-inch spacings to hold the pipe together in an even width), they prefabricated their own radiant mats.
“Zones on this project ranged anywhere from 48 to 250 feet long and up to 24 feet wide,” Barela explains. “We customized each mat in whatever dimensions were needed.” For example, on the widest zone, four 6-foot mats were connected to complete that zone.
“Overall, we saved 28 days in the construction schedule,” Barela says, estimating the true day-savings was much more like 60 versus the time required in a conventional radiant installation.