noun
a horizontal beam used to prevent two other structural members from spreading apart or separating
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he nailed the rafters together with a tie beam
• Syn: ↑tie
• Hypernyms: ↑beam
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noun : a beam acting as a tie (as in a roof) — see roof illustration
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a horizontal timber or the like for connecting two structural members to keep them from spreading apart, as a beam connecting the feet of two principal rafters in a roof truss. See diags. under king post, queen post.
[1815-25]
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tie beam noun
A beam connecting the lower ends of rafters to prevent them from moving apart
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Main Entry: ↑tie
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tie beam,
a timber or piece serving as a tie, especially, a horizontal beam connecting the lower ends of two opposite principal rafters, thus forming the base of a roof truss.
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n. a horizontal beam connecting two rafters in a roof or roof truss
Useful english dictionary. 2012.