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Version 17.01, as of: 27-Jun-2017
4.6 Installation using M12×300 hanger bolts and M10x200
hanger bolts on the timber substructure.
Hanger bolts are used on corrugated eternit and trapezoidal sheet metal roofs as well as
bitumen roofs to attach the carrier 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 diamters and screwing depths illustrated in Figure 48.
Figure 48: pre-drilling diameters for plate and substructure; screwing depths for substructure
Determine the rafter position (potentially mark using a piece of string). Drill the bores into the outer
roofing (e.g. sheet metal, corrugated eternit) and rafters. 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.
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