tie-beam
The main horizontal beam in a roof, connecting the bases of the rafters, usually just above a wall.
tierceron ...
Tie-beam
the horizontal transverse beam in a roof, tying together the feet of pairs of rafters to counteract thrust.
Transom ...
Tie-beam - The main horizontal roof beam just above the wall that connects the bases of rafters.
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Base crucks have blades rising from ground level to a tie-beam or collar-beam which supports the roof timbers. Full crucks have blades rising from ground level to the apex of the roof, serving as the main members of a roof truss.
Wood was essential in the construction of Ottoman buildings and was used for the centring of vaults and domes, for tie-beams and as scaffolding.
Camber - Of a horizontal timber, usually a tie-beam or a collar-beam, in which the centre is higher than the ends.
Campanile - A bell tower or any tower containing a bell, generally attached to a church.
In Germany they assume larger proportions and constitute small gables with two or three storeys of windows. The term "dormer" arose from the windows being those of sleeping-rooms. In the phrase "dormer beam" or "dormant beam," meaning a tie-beam, ...
 See also: Tie, Timber, Beam, Church, Collar
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