Sowinski Sullivan was the architect on a team designing the expansion of SEPTA’s Frazer Yard. The expansion involved two additions to the maintenance and repair shop. One addition house heavy-duty repair, and the other is dedicated to wheel truing. A separate standalone pre-engineered metal building for storing large equipment was also included in the project. The additions were needed to accommodate SEPTA’s new fleet of double decker rail cars that are intended to support the projected future growth in ridership. The new facility was designed to accommodate sophisticated repair equipment, including a tandem wheel truing machine. This machine allows operators to true two wheels at once to very precise measurements. Inside the repair shop, a new drop table bay, located within a 24-foot deep pit, was added for swapping out trucks from the train bodies.