Cast Iron Roof Trusses

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses.

Cast iron roof trusses.

Refinements developed during the industrial revolution in the late 18th century made cast iron relatively cheap and suitable for a range of uses and by the mid 19th century it was common as a structural material and sometimes for entire buildings. Cast iron architecture is the use of cast iron in buildings and objects ranging from bridges and markets to warehouses balconies and fences. Wrought iron eventually replaced cast iron in many structural applications but was somewhat limited by the lack. The manganese makes cast iron brittle and hard.

Cast iron roof trusses cast iron roof trusses. 12 50 a foot 12 40 14 95 a foot 42 60 all lean to shed trusses 1 12 pitch. Cast iron contains about 2 to 4 of carbon. All american made engineered agricultural gable trusses 4 12 pitch heavy duty 2 angled steel painted black.

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. In the second half of the 19th century roof trusses were often composite. 12 50 a foot up to 20 14 95 a foot over 20 we stock 24 30 and 40 gable trusses and 12 lean to trusses. The phosphorus increases the fluidity of cast iron.

All come with 16 overhang past post. That this achievement was overlooked was a result of the roof structure being replaced with a less adventurous timber roof following its collapse in afire in 1833 ten years after its completion archival evidence suggests that the original cast and wrought iron truss designed by rennie for the new west stores mirrored that of the earlier. Also it contains various impurities such as manganese phosphorus silicon and sulphur. Principal rafters of cast or wrought iron or timber were combined with a bottom boom and other tension members of wrought iron and compressed diagonals of cast iron often thickened with entasis at mid length to increase buckling resistance.

2 sizes available 40 1020mm. Of the sole use of cast iron and therefore was widely used throughout the late nineteenth century. Because of the large area covered the roof was supported internally on cast iron pillars and probably had wrought iron roof trusses that were tied into the walls by the wall plates.