Graphical Construction Glossary >> Woodwork. >> Joints >> Framing Scarf Joints

Framing Scarf Joints

End joints for heavy framing members

Joint in a tie beam inside the main roof of Salisbury Cathedral UK.

The angled and wedged scarf joint above has had a couple of attempts at reinforcing the original joint. In actual fact many of these joints were bolted or otherwise strengthened from the beginning. One method was sandwiching the timber joint between two flat iron plates with bolts tying them together. These were known as Fish Plates.

Above is a sketch of the joint in the photo above.

Above is a modern reconstruction of an early medieval halving type of scarf joint showing the position of the timber pegs or Trenails. These are also known as treenails or trunnels

There are many variations on this theme of scarf joints, but for the most part heavy structural timber and it's joints have been superseded by other materials in modern construction.

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"When we build, let us think that we build for ever."John Ruskin 1819-1900