Origin of tie beam
Examples from the Web for tie beam
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.”
The 'king-post' reached from the centre of the tie-beam to the point of the roof.