Civil Engineering Reference
In-Depth Information
Fig. 5.22
Roof sarking.
maintained, which will of course assist cutting and fitting of the floor boards at a later
date.
The problem of the lateral stability of the room remains to be solved on a permanent basis.
In Scotland, Scandinavia and the USA where roof sarking is common, this forms a sub-
stantial brace and nothing further is required. The sarking often takes the form of a sheet
material nailed to the top of the rafters over the whole roof area (see Fig. 5.22). BS 5268:
Part 3: 1998, annex A, section A2, gives guidance on suitable sarking materials and fix-
ing.
For information on loft to attic conversion work see Chapters 8 to 11 inclusive.
Trussed Rafter Shapes
Other common trussed rafter shapes are shown in Fig. 5.23.
