Sheet metal
The concrete and steel hangar has a large vaulted roof with one-story, lean-to additions, on the east and west sides, along its length. The hangar is approximately long, north to south, and wide. Two-inch thick gypsum planks were used to cover the roof, and the planks were sealed with bitumen. Access to the hangar was through a series of sliding wood doors, covered in sheet metal. Sheet metal was also used as siding for the structure.