Civil Engineering Reference
In-Depth Information
however only one of these grooves will be
utilised. When the fascia is fitted you will
site along the fascia prior to installation
and fit it with the bow up. Having the
groove on both edges of the fascia allows
you to do this and still have access to a
groove at the bottom edge of the fascia
for the installation of the eaves lining.
When cement-sheet type eaves lining is
used, the edge of the eaves lining is
inserted into this groove.
The ends of the rafters are normally
cut plumb and the fascia is attached to
the plumb cut of the rafters. Any joins in
the fascia are to be supported on timber,
either by joining over the end of a rafter
or by fitting a nogging between the rafters. Cut the ends of the fascia at 45-degrees so that
the joint is overlapped (see Figure 9.4).
Figure 9.4
Joining fascia over a nogging between two
rafters
Framing for eave lining
Additional framing timber is fixed to the rear of the fascia and back to the face of the
wall. When constructing a straw bale house you may need to fit timber down from the
rafters to support the wall end of the eave framing (see Figure 9.5). The horizontal
timbers (soffit bearers) in the frame for the eave lining should be fitted at no greater than
600 mm centres, and should be positioned to suit the lengths of eave lining you have
purchased, so that the ends of the sheets join on timber.
Figure 9.5
Soffit bearer to carry eave lining
