It has been determined that the bridge was originally an uncovered Pony truss bridge, due to the relatively low height of the queen post trusses and the discovery of supporting documents.
12.
The queen post truss and the king post truss may be combined, by using the straining beam of the queen post truss as the tie beam for a king post truss above.
13.
The queen post truss and the king post truss may be combined, by using the straining beam of the queen post truss as the tie beam for a king post truss above.
14.
However, the span range of queen post trusses was fairly narrow, with king posts being used for shorter spans and the upper limit of a queen post span being not much longer.
15.
The queen post truss bridge is of ancient origin, and both king post and queen post trusses were constructed from timber from the Middle Ages through early American history, and used for roof trusses and bridges.
16.
The queen post truss bridge is of ancient origin, and both king post and queen post trusses were constructed from timber from the Middle Ages through early American history, and used for roof trusses and bridges.
17.
The 1871 room is 30 ft [ 9.1m ] x 16 ft [ 4.9m ] wide with exposed Queen post trusses and a diagonal boarded ceiling and 140mm horizontal beaded boards on the walls.
18.
Whereas the roof of the Stephens Lane wing was supported on timber queen bolt trusses, the George Street wing used timber queen post trusses; and while cast iron columns had been used to support the main floor beams in the Stephens Lane wing, hardwood columns were used in the George Street wing.
