INTERMEDIATE BEAMS
ATTACHING GUTTERS AND DOWNPIPES
ATTACHING THE DECKING
If intermediate beams are required, they should be attached at
this stage. Generally beams should be evenly spaced for best
appearance. Stratco can advise on maximum beam spacings for
your application. Avoid placing beams over window or door
openings. Also see Figures 8-10. Once the framework is
complete, check that the falls are correct.
Before attaching any of the guttering to the truss attach stop ends and corner mitres
to the side gutters allowing a minimum overlap of 50mm (see Figure 11), rivet and
silicone. Cut a hole and insert and attach the gutter outlet ('pop') at the required
position.
Firstly fix the front gutter to the front truss temporarily with one rivet every 3 metres.
The additional necessary support for the guttering is provided when the decking is
fastened down with a rivet through the decking, truss and gutter. Now attach the side
sections of gutter with mitres attached to the side trusses and the front section of
gutter.
Make sure that the gutters and roof are totally free of swarf. The downpipe is not
attached at this stage because the posts are not yet fixed in their final vertical
position.
Insert the bitumen impregnated polyurethane (B.I.P.) roll into the
back channel. Prior to installation the decking should be turned
up at the back channel end, and turned down at the gutter end,
using a turn up/down tool. (see Figure 12).
Ensure that all the sheets of deck are the right way round so
that all their locking ribs or overlaps are on the same side. For
safety and accuracy this can be done while still at ground level.
The overlap of roof sheets should be away from the prevailing
wind.
Mark the back channel and front truss with pencil lines every
1000mm to ensure that when laying the decks you keep them
parallel (usually at 90
0
to the wall). Ensure that the deck is
pushed firmly into the B.I.P. to guarantee correct
weatherproofing.
FIG. 10: JOINT
CONNECTIONS
FIG. 8: INTERMEDIATE BEAM PLAN
FIG. 9:
INTERMEDIATE
BEAM LAYOUT
FIG. 11:
GUTTER
JOINT
FIG. 12:
WEATHERPROOFING
ROOFING
