Sanborn maps show the size, shape, and
construction of dwellings, commercial buildings, and factories, as well as fire walls, the locations of windows and doors, sprinkler systems, and types of roofs.
The maps also indicate widths and names of streets, property boundaries, and house and block numbers.The
nature of the business conducted in the facility, the number of stories and story heights of
the building, and wall
thickness are also provided.
Other special hazards such as gasoline or oil tanks are also marked.The locations of water mains are
shown, giving their dimensions.Additionally, features
such as water tanks, hydrants, pipes, and fire alarm boxes are noted on the maps.