1930 Archaic Roof System - timber lattice barrel type roof over a gym
1930 Archaic Roof System - timber lattice barrel type roof over a gym
(OP)
I have come across an archaic building system on a project I am working on. It can be best described as a lattice typ system. The building was built in 1930 and the roof is clear spanning a gymnasium (68 feet). I have removed only a small portion of the finish to discover a network of approximately 9" deep wood timbers that I can only describe as a lattice. The wood members are not orthagonal to the span of the roof - more like a 45 degree angle. Different pieces frame into each other.
About every 16 feet there is a 2" diameter tie rod that spans the gymnasium - I'm thinking its a retro-fit but don't know for sure.
Does anyone have an old book that shows a system similar to this description? Sorry I don't have a photo.
About every 16 feet there is a 2" diameter tie rod that spans the gymnasium - I'm thinking its a retro-fit but don't know for sure.
Does anyone have an old book that shows a system similar to this description? Sorry I don't have a photo.






RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
Mike McCann
MMC Engineering
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
"The Lamella roof is a curved roof framed by a system of intersecting skewed arches made up of relatively short members call lamellas. The lamellas are bolted together at an angle, so that each is intersected by two adjacent lamellas at its midpoint to form a series of interlocking diamond shapes."
You sketch didn't exactly look like this
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
It has a span of 68 feet, but the arch is fairly flat - I figured the radius of the roof arch was around 55 feet. The building is located in Eastern Connecticut.
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
http:/
Unforfunatly i dont have a copy hanging around but someone else might.
If your building was built in 1930 there is every possibility that the structure is of this type, as Lamella roofs were introduced into the US in around 1925...
RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
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RE: 1930 Archaic Roof System - timber lattice barrel type roof over a gym
thanks.