General term for the longitudinal timber at the apex of roof (the term Ridge alone is not recommended). The angle at which the ridge piece is set may be indicated by subsidiary terms
Subsidiary terms
f) Cruck stud g) Wall plate h) Packing piece i) Ridge piece j) Collar k*) Spur l) Cruck blade m) Sill beam
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
b*) Ridge purlin d*) Soffit (face) e) Upper side f*) Top (face) g) Lower side h) Inner side i) Outer side j) Upper face of truss