tie beam

noun

1. 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.

tie beam

noun

1. 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

Word History and Origins

Origin of tie beam¹

First recorded in 1815–25