Tenon with diminished shoulder and housed soffit shoulder (tusk). It became the standard later joist joint; sometimes confused with Through Tenon.
contrast Through 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
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