Custom suspended solution from Spider

Spider, a division of the SafeWorks group, provided a custom suspended access solution for installation of window walls on the new 16-story Centre 425 commercial office development in Bellevue, Washington, US.

All New Glass, Inc. required an access solution that would enable its crews to work on three faces of the building simultaneously. Additionally, the contractors required that the equipment’s footprint on the rooftop be minimal to enable other trades to continue working safely, effectively, and according to the rigorous construction timeline. Spider engineered a custom rigging solution, securing 8ft outrigger beams directly into the rooftop’s 14ft tall mechanical screen wall to eliminate the need for counterweights and a complex maze of tieback cables.

Ten swing stages, ranging in length from 30ft to 40ft each, powered by SC1000 traction hoists, and equipped with walk-through stirrups, were suspended from these outriggers, maximising the customer’s productivity on the jobsite. “On the Centre 425 project, we recognised the opportunity to utilise a custom swing stage system that would minimise moves and virtually eliminate impact to other trades,” commented Joe Martel, project executive with All New Glass.

“Spider’s team was instrumental in turning the opportunity into reality by providing engineered solutions, quick pricing, and the ability to meet the project schedule.”

Spider’s equipment is expected to be on site for the eight-month duration of the window wall installation.