Longitudinal timber, set square to the ground, on the top of a wall or in a roof truss
Subsidiary terms
A) Base cruck B) Spere truss C) Secondary truss D) Raised cruck E) Upper cruck
a) Wall plate b) Cusp c) Cusped windbrace d) Ridge piece (ridge purlin) e) Principal rafter f*) Plate g) Purlin h) Cranked tiebeam l) Ceiling beam
A) Base cruck F) Two-tier cruck
f*) Plate i) Upper tiebeam j) Lower tiebeam k) Common rafter m) Joggled halving n) Barefaced dovetail p) Spur