- 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.
Origin of tie beam
First recorded in 1815–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tie beam
The 'king-post' reached from the centre of the tie-beam to the point of the roof.
The open roof is supported by a mighty 'tie-beam' and two uprights called 'queen-posts'.
A tie-beam of the chancel roof bears a date of ten years later.Nooks and Corners of Shropshire
H. Thornhill Timmins
In the phrase “dormer beam” or “dormant beam,” meaning a tie-beam, we have the same sense as in the modern “sleeper.”
- a horizontal beam that serves to prevent two other structural members from separating, esp one that connects two corresponding rafters in a roof or roof truss
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012