HAEMMERLIN MAXIAL PREMIUM, Instructions For Use Manual

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The knee joint can be supported directly on the roof or on trestles. It must always be supported, either
directly on the building or by using a trestle. The trestle can be supported directly on the roof or on a board
for a better distribution of the effort.
Assemble the required number of ladders and the headboard and lock them in place.
The headboard cannot be installed directly after the knee joint. A ladder of at least 0.5m (or 1m or 2m) must
be inserted between the knee joint and the headboard.
Ladders can supported directly on the roof or on trestles. The trestles can be supported directly on the roof
or on a board for a better distribution of the effort. The minimum distance between two supports depends
on the payload carried in the roofer platform. Follow the instructions on the shoring chart attached to the
base ladder.
The headboard can be supported directly on the roof or on trestles. In case of flat roofs or inside buildings,
use the headboard props. (See paragraph entitled “Shoring").