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36 Barry’s Advanced Construction of Buildings
Guard rail
Steel mesh
guard
Intermediate rail
Toe board
Scaffold boards
Working platform
Note: Where the projection of the roof is such that workers may fall between the scaffolding rails,
two or more toe boards may be necessary
Figure 2.11 Scaffolding roofs: working platform below eaves.
Trussed-out and suspended scaffolds
It is sometimes unsafe, uneconomical or simply not practical to construct a scaffold from
the ground. In such situations trussed-out or suspended systems are used.
Trussed-out scaffolding systems
A trussed-out scaffold is one method of scaffolding the higher levels of a building without
transferring the load to the ground (Figure 2.13 and Photograph 2.13). Another method
of high-level scaffolding is to cantilever the loads out of the building using a secured beam
(Figure 2.14 and Photograph 2.14). Truss and cantilever scaffolds are highly dependent