Roof structure, NCRR Freight Shed

ID: 1392 ~ Source: Library of Congress, Historic American Engineering Record ~ Creator: Jack Boucher ~ Date: c. 1983
This file appears in: Northern Central Railroad Baltimore Freight Shed
Roof structure, NCRR Freight Shed
Public Domain

The freight shed roof is an unusual structure made of three distinct materials, known as a tricomposite structure. The top chords are made of timber; thin metal tension rods extend diagonally from the horizontal timber braces; and cast-iron cross-shaped compression members extend down from the top chord.

This file appears in: Northern Central Railroad Baltimore Freight Shed

By The Explore Baltimore Heritage team
Built by the Northern Central Railroad, the former Baltimore Freight Shed is a rare example of composite timber and iron roof construction of the mid nineteenth century. The roof structure is comprised of a series of tricomposite trusses with…