Void Forming Tubes

Economical and easy application
Displacement pipes allow for  the  safe, quick and economical construction of hollow bodies in hollow plate bridges and ceilings. The  dimensional accuracy, tightness and high resistance to deformation of these industrial cavity elements guarantee the  implementation of the  calculated static values in the  structure.

Easy and flexible
Despite their low weight, the  displacement pipes can be installed in the  concrete without stiffening. Additionally, the  corrugated profile provides a certain flexibility, which allows for  the  laying of displacement pipes also in a bent course. Despite these characteristics, the  resistance of the  pipe to longitudinal deformation is so high that the  distances between the  lift prevention locks can principally be adapted to the  stability of the  applied supports.If the  displacement pipes are to be secured against lift, it is recommendable to apply the  specifically developed Hydra single and double anchoring elements. They are tested for their static properties and guarantee utmost avoidance of showings, above all of rust stains at the bottom of the ceiling.

The  different assembling and disassembling methods of the  supports allow for  compliance with  the  individual requirements in the  individual structures. it  is possible to install and to remove the  lift prevention locks exclusively from above, if this should be very difficult or impossible from below, due to the  specific conditions.

Your Advantage:

  • greatest available dia. 1,500
  • Delivered in every transportable length
  • Additional shearing connection with the concrete by means of their corrugated profile
  • The implemented reduction of the Tube end avoid undesired notch tensions

The  connection to the  required assembly lengths is carried out on the  construction site either by connecting individual pipes whose both ends are  sealed with  steel lids against the  intrusion of concrete (finished assemblies) or by connecting the  individual pipes with  plug-in sockets, with  only the  first and the  last pipe of the  line being sealed with  a lid (connected assemblies). Lines which consist of connected assemblies allow for  the  laying of supply lines through the  hollow bodies.

Instead of sealing the pipes with steel lids, equipment with conical seals is possible. The implemented reduction of the pipe end lengths avoid undesired notch tensions.

A ventilation system for the individual pipes, or a joint ventilation of the pipe line can be provided or prepared by the manufacturer for the purpose of ventilation or drainage of the pipe lines.

If the displacement pipes are to be secured against lift, it is recommendable to apply the specifically developed Hydra single and double anchoring elements. They are tested for their static properties and guarantee utmost avoidance of showings, above all of rust stains at the bottom of the ceiling. The  different assembling and disassembling methods of the supports allow for compliance with  the  individual requirements in the individual structures. it is possible to install and to remove the lift prevention locks exclusively from above, if this should be very difficult or impossible from below, due to the specific conditions.

Lids, End cones, Plug-on socket

Instead of sealing the pipes with steel lids, equipment with conical seals is possible. The implemented reduction of the pipe end lengths avoid undesired  notch tensions.
The different assembling and disassembling methods of th supports allow for compliance with the individual requirements in the individual structures.

possible dimensions:

Anchoring

Anchoring generell

If the displacement pipes are to be secured against lift, it is recommendable to apply the specifically developed Hydra single and double anchoring elements. They are tested for their static properties and guarantee utmost avoidance of showings, above all of rust stains at the bottom of the ceiling. The different assembling and disassembling methods of the supports allow for compliance with  the  individual requirements in the individual structures.

Twin Anchoring with Locking Tie Rod

Before being embedded in concrete, displacement pipes must be secured against lifting in the  unhardened concrete. This can be achieved by the  temporary application of load which, however, will cause additional stress to the  sheathing and the  supporting structure and will hinder the  concrete work. The  better solution therefore is the  anchoring of pipes below the  sheathing. The  strength of the  lifting forces is quite often underrated in practice, especially with  pipes of greater diameters. it  is therefore recommendable to use statically tested anchoring systems. Hydra tie rods are  statically tested and have proven their economical application in practice.

permissable Anchoring distances  and assembly instructions as well as more Accessories on demand.

Spacers

Removal of Traces in the  Concrete
The  holes for  the  anchoring rods which remain in the  concrete after the  removal of the  sheathing can be closed quickly and tightly with  plastic plugs.
This allows for  optimum compliance with  all demands on the  visible surface of concrete structures.

Spacers
Hydra spacers come with  fiber-reinforced concrete stones, in which the  spacer has been installed by the  constructor. In this version, the  distance between the  foot and the  free concrete surface is 30 mm (DIN standard 1045). This will avoid corrosion stains at the  bottom of the  ceiling.