Thread: Chimneys
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Old 06-06-2006, 09:41 PM
Tom Schiffer Tom Schiffer is offline
Join Date: Apr 2006
Location: On Flintlock Farm on Gunpowder Road in Boone County, Kentucky
Posts: 777

Linda: Dunno about the tops of the stacks doing anything for the embers etc. but I think you are absolutely right about the height factor getting the sparks/embers away from the flammable freight and superstructure. I think many if not most boats had tar paper roofs. Steamboats were often raised from sinkings, but it was hard to bring them back from a fire...although it was done. If those stacks were tall enough and skinny enough to give the flue gas some velocity, the gases would loft the embers so that they would burn out before coming in contact with the boat. Those embers could not burn when within the oxygen deficient flue gas, but when they contacted the oxygen in the air, business picked up, but, hopefully, they burned out before alighting. I forgot to mention that the flue gas also contained the 80% of the air that is nitrogen.
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