Published on August 8th, 2017 | by UC&D Magazine0
Weber Co. Library
Just over a year into its existence, the accolades continue to roll in for the Weber County Library Headquarters in Roy
Just over a year into its existence, the accolades continue to roll in for the Weber County Library Headquarters in Roy, with the most recent being a Merit Award for Innovative Design in Engineering and Architecture in Structural Steel from American Institute of Steel Construction (AISC).
This prestigious national honor is the fifth award earned since it opened in February 2016; others came from AIA Western Mountain Region, AiA Utah, Utah Masonry Council and ACEC Utah.
The 75,000 SF facility was designed by Salt Lake-based Prescott Muir Architects (PMA) and built by Ogden-based R&O Construction. ARW Engineers of Ogden provided structural engineering design.
A key central design feature is a sculptural stair overlooking a reading room with a two-story glass wall that offers a view to outdoor gardens, a central 143-foot ‘light-bar’ structure was designed with a continuos Vierendeel truss system with a 28-foot cantilever that extends beyond the east face of the building.
The Trussed structure is infused with glass panels which offer copious amount of natural light throughout the art gallery and east lobby. The roof structure is supported by 10.75-inch diameter columns that taper to 6-inch diameter sections at the base and roof. The roof structure was designed using w-beams and cantilevered elements on three sides of the two-story roof structure.
Project Architect Jay Lems of PMA put in exposed structural elements, with the roof structure designed and built in layers to provide clean lines while adding depth throughout. Girder beams align between columns and continuous w-beam joists, which overlay the girders.
Lems said the building has received rave reviews from the public and is growing in popularity, with space for library functions, a 255-seat black box theater, an outside pavilion/plaza area that can host concerts, parties and other social events, and space for a rotating art gallery. Hesaid the project was designed to LEED Gold standards (the owner will forego applying for certification), with energy efficiency a primary hallmark. Chilled water is generated from an air-cooled ice-making chiller. The chiller is sized so that it operates at night to produce ice, and the system circulates water flow to melt ice during the day to supply chilled water demand. This results in a 40% reduction in chiller size based on the building’s peak load.
The owner specifically asked that operating costs remain the same, despite going from an old 13,000 SF facility to a build nearly six times larger.
“You’re talking about moving from 13,000 to 75,000 square feet and keeping operating costs similar so we needed it to be highly sustainable and energy efficient,” said Lems. “Daylighting is a good way to reduce electrical loads in the daytime.”