Spacer Block: A Unique Timber Component in Canopy Walkway Structure

This paper has shown the importance of the choice of timber species as well as the configuration during installation of spacer blocks on tree branches. The correct placement of appropriate timber species at the tying knot, i.e. between the cables and tree bark, will ensure that minimal stress is being imparted onto the tree branch. The strongest timber species is configured to receive the highest stress while the weaker timber species acts as a mechanical damper, thus keeping the knot taut around the holding branch. The spacer blocks of weaker species are bound to be deteriorated earlier, and they are planned to be replaced during the maintenance exercise of the walkways.