The current mechanical design for Stengel Hall is comprised of four 20-ton and one 15-ton outdoor split system units and four 310,000 BTU/hr high efficiency boilers. These systems will replace the existing steam heating system and provide air conditioning to the entire building. The terminal air distribution consists of 10 energy recovery ventilators that precondition air for the classrooms and other high occupancy areas of the building. Due to the severe space limitations ducts needed to be run as directly as possible to the space. The final design resulted in a constant volume system with 28 fan coil units ranging from 1.5 tons to 5 tons located in the basement, attic, and within several mechanical closets on the second and third levels. These units provide ventilation air at minimum of 15 cfm/student at the school’s request and adhere to the standards set by ASHRAE 62.1 and ASHRAE 90.1.
The existing electrical system in Stengel Hall was in need of many major updates. The new construction and renovations required a new service entrance which is now located along main street and enters the building underneath the new public entrance. One main 120/208V, 3-phase 1200A distribution panel serves a receptacle panel on each floor including the basement as well as one main lighting panel and two mechanical equipment panels. The main distribution panel serves the condensers on the roof directly.
A combination of T8 and T5 fluorescent lighting fixtures are planned to replace the existing fixtures and become standard in the newly constructed portion of Stengel Hall. Accent lighting in the lobby is comprised of under-counter LED light strips and incandescent hanging chandeliers. Many chandeliers existing and new are to remain in entryways and add notable character to the spaces.
Due to the complexities of connecting new construction to the existing structure of Stengel Hall a combination of masonry walls and HSS columns were used in the new construction of the Academic Center for Excellence. The existing structure consists of a varying combination of concrete foundation walls, brick, stone, and concrete masonry units throughout the remaining structure. The new portion of Stengel Hall will meet the floor levels of the existing structure and consist of a concrete foundation, HSS columns, and a 4” concrete slab on metal deck system.
As previously mentioned a new main entrance will allow for a convenient public access point from Main Street, Lititz into Stengel Hall as well as the connected theatre from the main lobby. Students will mainly enter through the lobby as well from the campus-side of Stengel Hall or from the dorm connection in the existing Stengel Hall structure. There are four main stairwells within Stengel Hall and one elevator on the south-east corner that will serve as the main vertical transportation throughout the building.
The upgraded telecommunication system is important to the function of the Academic Center for Excellence. All major telecommunication equipment is located in a server room on the second level of the building. Since all students at Linden Hall are provided their own personal netbooks there is only one main computer lab available for student use.