A Spurred shoulder makes an acute angle with the top face of the tenon.
a) Half beam b) Cross joisting c) Scribed joist d) Cogged joist e) Cogged joist with diminished shoulder (squinted butt)
f) Bracket g) Applied beam h) Lodged joist i) Trimmer j) Barefaced soffit tenon with diminished shoulder (diminished haunch)
k) Central tenon l) Bare-faced soffit tenon with housed shoulder m) Bare-faced soffit tenon with spurred shoulder n) Double soffit tenons with diminished shoulders
p) Tusk tenon q) Tusk r) Central tenon with spurred soffit (soffit spur) s) Central tenon with housed soffit shoulder