Tie"beam` (?), n. (Arch.) A beam
acting as a tie, as at the bottom of a pair of principal rafters, to
prevent them from thrusting out the wall. See Illust. of
Timbers, under Roof. Gwilt.
Tie"beam` (?), n. (Arch.) A beam
acting as a tie, as at the bottom of a pair of principal rafters, to
prevent them from thrusting out the wall. See Illust. of
Timbers, under Roof. Gwilt.