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You are here: Home | Service | FAQ | Overloading the tree screw – what should I do?

Reasons for overloading a tree bolt are as follows:

  • Weight of tree house too big
  • Tree house subsequently extended
  • Short-term extreme loads (crowds of people, wet snow, storm)
  • Bearing / beam is mounted very far out on tree bolt
  • Beam slipped outwards in wind – lever arm too large
  • Tree trunk / wood too soft, see “Which tree is suitable – Every tree is an individual”.

In all cases, failure is indicated by the screw sagging in the wood; the screw itself is dimensioned so that it remains intact. Our load tests have shown that the screw holds its position up to the load limit of the wood (can vary greatly). At this point, the wood fibres give way and the screw sinks. Force and deformation are proportional, i.e. the screw will not continue to sag unless the load is increased. If the screw is already hanging down crookedly – take care and live longer! Solutions to relieve the screw:

  • Fix the support close to the tree and prevent slipping outwards with distance rings
  • Reinforce tree bolt with rope safety device “Cable Suspension”
  • Support platform from below with strut
  • Hang the platform additionally with rope and tree loop from the branch fork
  • Mounting the support with concrete foundation

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