Pegged Socket Joint

This joint is a pegged socket joint.

A hole is drilled through both pieces so that a peg can be inserted to pin the joint together. This joint is often used to make bamboo ladders, using two larger uprights, and smaller cross-poles for the rungs. Maximum strength is obtained by locating the cross-poles just above the nodes on the upright poles. The pegs can be cut off flush, or left protruding to make disassembly easier.

Lashings should be added to these bamboo joints to help prevent splitting under heavy loads.