Version: 23.01
As of: 01/2023
Page
40
from
119
5.6 Installation using M12×300, M12×250 and M10×200 hanger bolts on the
timber substructure
Hanger bolts are used on corrugated eternit, trapezoidal sheet metal- and sandwich element
roofs as well as bitumen roofs to attach the support rails. The load bearing roof construction to
which the hanger bolt is secured consists of timber purlins or timber rafters.
Compensate for any difference in height of the purlins/rafters using the thread of the hanger
bolts.
Comply with the valid, generally applicable building surveillance certificate Z-14.4-602 and the
regulations contained therein for the use on trapezoidal roofs.
The roofing must not be damaged by pressure from the installed hanger bolts. If there is a risk of this, suitable measures must be
taken to spread the load. Furthermore, the penetration point of the hanger bolts through the water conducting level should be
sealed in accordance with roofing trade regulations. For this reason, we recommend having hanger bolts fitted by a roofing
company. Please also observe the guidelines and regulations of the manufacturer of the respective roofing.
Proceed as follows during mounting:
•
Do not drill into the water bearing depressions, but into the protruding parts.
•
Use the pre-drilling diameters, screwing depths illustrated in Figure 52 and minimum dimension in Figure 175.
Hanger bolt
pre-drilling diameter [mm]
Screwing depth lef [mm]
Hanger bolt M12x300 A2
Hanger bolt M12x250 A2
8,4
48…100
Hanger bolt M10x200 A2
7,0
40…67
Figure 52 Pre-drilling diameters for plate and substructure; screwing depths for substructure
•
Determine the purlin position (potentially mark using a piece of string). Drill the bores into the outer roofing (e.g. sheet
metal, corrugated eternit) and purlin. Subsequently drill 15mm bores into the outer roofing.
•
Tighten the lower nut on the machine thread to press the rubber seal against the outer roofing, thus sealing the hole.
•
Carefully press down the seal. Risk of cracks and deformation!
•
For stress reasons, the distance to the roofing must be kept as small as possible, see Figure 54 Fixing distance.
•
Cut hanger bolts using an angle grinder if they protrude too far (comply with accident prevention regulations).
Figure 51
Hanger bolt
Summary of Contents for TopFix 200
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