CRUCK

UF Full Cruck
SN A pair of timbers, or blades, usually curved, rising from a place at or near ground level to a point at or near the apex of a roof, forming an approximately triangular frame on which the subsidiary structure rests.
CL STRUCTURAL COMPONENT
BT TRUSS
NT BASE CRUCK
BLADE
CRUCK SPUR
END CRUCK
JOINTED CRUCK
RAISED CRUCK
UPPER CRUCK