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When building a clear span pole barn is there an appreciable strength difference between a 3 in 12 pitch and a 4 in 12 pitch roof?
Wiki User
∙ 18y ago
The steeper the pitch of any roof, the more resistance it has to developed live loads, such as snow or ice. The difference between a 3/12 and a 4/12 is not great, but the 4/12 is stronger. Another issue to consider is the roof's ability to shed water...3/12 is typically the shallowest pitch recommended for both metal and ashaltic type shingles. A 4/12 is a step better and is more likely to prevent failures during the life of the roof and will serve the roofing warrantee better.
Wiki User
∙ 18y ago
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