...and Ruskin had the solution.
The existing shafts were not fire rated and none of the penetrations were protected with fire or combination fire/smoke dampers. The plans called for new fire rated wall construction and combination fire/smoke dampers for penetrations in all shafts. Many of the applications had three ducts penetrating the shafts above the ceiling, one hot supply and one cold supply and one return air. Because the shafts were only 36 inches wide, it was impossible to use standard style combination smoke dampers with side mounted actuators and accessories. They would be too wide to properly fit in the space. KJWW Engineering Consultants turned to its local Ruskin Representative, Hart-Hammer, Inc., of Des Moines, Iowa, and contractor Cunningham, Inc., Oskaloosa, Iowa for help. Working together, Cunningham, Hart-Hammer and KJWW Engineering Consultants found that Ruskin's [model:fsd60v]FSD60V[/model] combination fire/smoke damper offered the performance and flexibility necessary to get the job done. This combination damper can be installed with the actuator and accessories on either the top or bottom of the damper, and with the damper blades oriented vertically. Code-approved installation takes less space than a conventionally mounted damper and retains the U.L. listing. By mounting the actuators at the top of the existing chases, the hospital was able to update their system without the expense, or time, involved in redesigning or building a new one. With the use of the Ruskin FSD60V the project was completed on time and economically.