Michigan Hospital Surgical Pavilion
The 25,000 sq. ft. addition has four new operating rooms; support spaces; and forty-two beds for pre & post-operative care. The 20,000 sq. ft. renovation converted six existing operating rooms into four larger and more modern operating rooms.
The existing electrical distribution system was approaching 40 years old. To address code issues and reliability issues, much of the old required replacement; while still keeping the hospital running.
Scheduling and phasing during construction involved a minimum of five operating rooms remaining operational at all times. This was accomplished by building the addition and getting the four new operating rooms operational prior to demolition. The existing operating rooms were demolished and renovated in phases, always maintaining at least five in operation. Phasing required the existing HVAC, plumbing, medical gas and electrical systems to be kept intact.
The existing HVAC system was a central air handler with steam heat and steam reheat coils in the ducts in each zone. The central unit and reheat coils were replaced by a central custom air handler with high efficiency condensing boilers providing hot water to terminal reheat units. The new unit was installed on the addition and ducted to serve the addition. The ductwork was stubbed into the space to be renovated. As each operating room was renovated, the steam reheat and supply ductwork was removed. A new hot water terminal reheat unit was installed and connected to the air distribution system for the new custom air handler. When all operating rooms and support spaces were changed over to the new unit, the old air handler and steam boilers were removed.
Temporary electrical wiring and distribution was designed to serve the existing surgery rooms until the new emergency distribution, which is located within the new construction, was energized. The new generator is a replacement of an old and smaller unit. Since the new generator is located at the same place as the old unit, a temporary generator was required to maintain emergency power to the hospital.
As each renovation phase was completed, areas were switched over to the new MEP systems. Once all areas were completed, the existing systems were removed.