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20
PARTS REQUIRED:
x66
2" (5,1 cm)
x2
1-5/8" (4,1 cm)
DORMER TRUSS ASSEMBLY (CENTER 2 GUSSET)
x6
4-13/16 x 24" (12,2 x 61 cm)
OSB OR WOOD GRAIN
x3
2 x 4 x 75-1/4" (5,1 x 10,2 x 191,1 cm)
ECN
1/4" (1,9 cm)
GAP
1/4" (1,9 cm)
GAP
1/4" (1,9 cm)
GAP
1/4" (1,9 cm)
GAP
KGA
ECN
Fig. A
Fig. B
Fig. C
Glue where
gusset installs
Keep rafters firmly against
PVA
at both ends when securing gusset.
Repeat steps 1 through 3 to assemble two more double gusset dormer rafters.
Remove
PVA
's from floor.
Continue to build two more trusses with only one gusset
Flip rafters over and attach a second gusset using glue and (12) 2" nails. No need to use jig for this gusset.
4
5
6
3
2
Keep
KGA
and
ECN
firm against outside
PVA
's as shown
(Fig.A)
and push rafters tight to the middle
PVA
.
Rafters should touch at tips
(Fig. A)
.
Apply glue to rafters where gusset will attach
(Fig. B)
.
Place gusset onto
KGA
and
ECN
holding a 1/4" gap from edge
(Fig. C)
and keeping rafters firm as instructed.
Secure gusset using one 1-5/8" screw into each rafter.
HINT:
These screws will help hold the measurements
when you nail on gussets.
Use ten 2" nails to finish securing the gusset to the rafters to pattern shown in
Fig. C
.
BEGIN
¸
1
Place rafters
KGA
and
ECN
into the jig as shown.
1-5/8" (4,1 cm)
Screw
120-3/8"
(305,8 cm)
x3
KGA
2 x 4 x 61-13/16" (5,1 x 10,2 x 157 cm)
KGA
ECN
Flush
Содержание Yardline 16549
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