76
fi g. 5.28
fi g. 5.29
fi g. 5.30
fi g. 5.31
fi g. 5.32
5 - M
AST
AND
M
AST
T
IES
Masts and Mast Ties
1-
Install the mast tie attachment assembly as described in steps 1 through 3 of the mast
tie installation procedure on p. 70.
2-
Slide the top part (two angle bars) of the 30-degree mast tie bracket in the mast over
the mast tie attachment assembly and make sure they are inserted in both the front
and back mast rungs (fi g. 5.30).
3-
Slide the bottom part of the 30-degree mast tie bracket in the mast under the mast
tie attachment assembly.
4-
Align the top two angle bars with the bottom part of the 30-degree mast tie bracket
and bolt them together using 5/8" bolt and nut assemblies (4).
5-
Attach the angle bracket (fi g. 5.31) to the front of the mast tie attachment assembly
with 9/16" bolt, washer and nut assemblies (3).
6-
Tighten all the nut and bolt assemblies to 60 lb-ft (81 N-m) of torque.
Installation of the angle bracket
Mast tie attachment assembly
with 30-degree mast tie kit
Angle bracket
Mast tie bracket – type 2
Angled Mast Ties
Some mast tie confi gurations require that the mast ties be attached at an angle (between
5 and 30 degrees from horizontal) through windows or other building openings (fi g. 5.32).
These angled mast tie confi gurations require the use of the optional 30-degree mast tie kit
(fi g. 5.28) and an anchoring system suitable for ties on a fl oor. An angled mast tie installation
must not exceed
a 30-degree angle from horizontal (fi g. 5.33, p. 77). It is
mandatory
to use
three
mast ties for each tie point of an angled mast tie installation.
Only
one
optional mast tie extension is allowed for each mast tie in an angled mast tie
confi guration.
WARNING
An angled mast tie installation
must not exceed
a 30-degree angle from
horizontal. Only
one
optional mast tie extension is allowed for
each
mast tie in
an angled mast tie confi guration.
