Apprentice Training, structural & framing

Traditional Heavy Timber Under-Squinted Scarf Joint

8x8 solid timber beam, under-squinted butt shoulders, hardwood central key

Time: 4 h 30 min
People: Two
Level

Before you start

Clear 3 × 1.5 m of floor and lay out the parts.
8 parts and 4 fasteners in 5 steps.
You'll want a claw hammer and a spanners and a tape measure and a drill and a spirit level.
Check bolt hole clearances; excessive drift tolerance allows the timber joint to slip under dead load.
Never place a structural timber scarf splice at peak mid-span bending; locate joints near inflection points.

Apprentice Training & Risk NoticeEducational training demonstration only. Risk: Real-world structural lumber sizing, spans, and fastener schedules carry legal liability and must comply with local building codes (IRC/IBC/OSHA) and certified engineering.

Apprentice Training, structural & framing

Traditional Heavy Timber Under-Squinted Scarf Joint

8x8 solid timber beam, under-squinted butt shoulders, hardwood central key

Time: 4 h 30 min
People: Two
Level

Before you start

Clear 3 × 1.5 m of floor and lay out the parts.
8 parts and 4 fasteners in 5 steps.
You'll want a claw hammer and a spanners and a tape measure and a drill and a spirit level.
Check bolt hole clearances; excessive drift tolerance allows the timber joint to slip under dead load.
Never place a structural timber scarf splice at peak mid-span bending; locate joints near inflection points.