In the 1980s, Wayne Smith designed and built this service and maintenance shed for electric and diesel locomotives for use on Standard gauge layouts. Smith later sold the design to James Hall of Linden, Virginia; in 2021, Classic Model Trains LLC purchased the rights to the engine shed from Hall and is once again manufacturing this unique modern era Standard Gauge accessory. For more background information and history of Smith Metalworks and their Standard Gauge products, see the account on pages 552-556 of Not Your Daddy's Standard Gauge: A Guide to Modern Era Standard Gauge Trains and the People Who Made Them, by Arno Baars, MESG Publishing, 2022.
The engine shed is made entirely of aluminum, and is sold in kit form; it is easily assembled using the included hardware and guide. All the parts are pre-painted. Assembly may take an hour or two, and the only tools required are a Phillips head #2 screwdriver and a pair of pliers.
The finished dimensions of the engine shed are 18" wide x 23-1/4" long x 17-1/4" high. The shed accommodates two Standard Gauge through tracks. The track door openings measure
5-3/8" wide x 8" high.
The Engine Shed is a large structure, but keep in mind that it straddles two tracks, so you don't actually need a large empty space on your layout to place it. All you need are two tracks spaced 7-3/4" from center rail to center rail, and 3-3/4" along the outside of each track.