The ceiling-mounted bracket 2LP/M16 or M20 is bolted to a dowel plate, which in turn is dowelled with anchor rods to a concrete ceiling.

On every dowel plate:

The specified dimensions, positions and clearances must be followed exactly.

First, only one of the holes is drilled, the anchor rod is fixed within it and, after the injection mortar hardens, the dowel plate is bolted on. The other drilled holes are only drilled afterwards through the hole in the tightly bolted-on dowel plate. Otherwise the drilled holes could go astray during the drilling and no longer align.

  Position the dowel plate as specified in the planning documents.

  Align the dowel plate so that it is lengthwise exactly perpendicular to the later-installed HB profile rail.

  Position the dowel plate so that it is exactly centred in relation to the later-installed HB profile rail.

This is necessary so that the HB profile rail can later be aligned.

  Thoroughly sweep and clean the entire assembly area.

  Mark a hole of the dowel plate on the supporting structure.

Depending on the load capacity, the dowel plate as two or four holes.

On a hole of the dowel plate:

  Clamp the carbide masonry drill bit with the correct diameter in the hammer drill.

Only use drill bits that bear the inspection mark of the appropriate testing authority (in Germany: Remscheid).

At the drilled hole:

  Blow out the drilled holes from the base of the hole at least twice with a blow-out pump or with oil-free compressed air and vacuum up the drill dust.

  Brush out the drilled holes twice with the drilled hole brush.

  Blow out the drilled holes and suction out the drill dust twice more.

  By way of a trial, insert the anchor rods completely into the drilled holes. The shaft with the cones must be completely in the drilled hole exactly up to the start of the thread.

If a drilled hole is not deep enough:

  Re-drill and clean the hole as previously described.

  Unscrew the capsule seal.

  Screw on the static mixer.

  Place the capsule in the pressure gun.

  Press injection mortar out of the capsule until the injection mortar emerging has been uniformly mixed and is clearly grey in colour. Do not use injection mortar that is not grey in colour.

─     In the event of interruptions (e.g. between two dowel fittings), do not unscrew the static mixer from the capsule.

─     After each interruption, squeeze out two gun strokes of unused injection mortar and do not use.

─     After longer breaks, screw on a new static mixer and again squeeze out the injection mortar for as long as is needed until the discharged injection mortar is a clearly grey colour.

─     Injection mortar which is not grey is not mixed correctly and will not set. Do not use any injection mortar which is not grey coloured!

─     Setting time of the injection mortar:

  Read off the necessary quantity of injection mortar from the table. From the base of the drilled hole, fill the drilled hole with injection mortar without any bubbles. Read off the quantity used to fill the hole from the scale on the capsule.

  Continue immediately with the next work step (see Inserting the anchor rod in the drilled hole). Otherwise the injection mortar will harden and become unusable.

  Rotate the anchor rod slightly (without spherical washer and hexagonal nuts) and while doing so, press it into the drilled hole. Press the anchor rod in so far that the shaft with the cones is completely in the drilled hole exactly up to the start of the thread.

●   In the process, some injection mortar will emerge from the drilled hole.

●   Only with composite decks: since the anchor rod is only anchored in the in-situ concrete, but the semi-precast element still lies beneath the in-situ concrete, no injection mortar will emerge from the hole.

If no injection mortar comes out of the drilled hole:

  Pull the anchor rod immediately out of the drilled hole.

  Fill up the drilled hole with additional injection mortar.

  Insert the anchor rod again as described.

  Continue immediately with the next work step (see Wiping off injection mortar). Otherwise the injection mortar will harden and the dowel plate can no longer be fitted flat.

  Wipe off the injection mortar that has come out of the hole.

Otherwise the dowel plate cannot be bolted flat under the concrete ceiling later.

A wedge is now inserted to make sure the anchor rod is held safely in the drilled hole (e.g. while the first anchor rod is being installed on other dowel plates).

  Turn the wedge with the concave side towards the anchor rod and push it into the drilled hole.

  Push the wedge until the anchor rod is safely in the drilled hole and does not slip out.

●   The anchor rod is pushed slightly to the side by this. This is not of any significance for further installation work.

  Allow the injection mortar to harden.

Table: Hardening times for a dry concrete ceiling. Double the times for damp or wet concrete.

Tip:

The time during which the injection mortar is hardening can be used to install the first anchor rod on other dowel plates.

After the injection mortar has hardened around the first anchor rod:

  Remove the projecting part of the wedge.

  Push the dowel plate with the hole without thread onto the installed anchor rod.

Do not use the holes with thread. The ceiling-mounted bracket is installed using these later.

  Align the dowel plate as described at the beginning.

  Place the clamping bush on the anchor rod.

  Push the assembly aid on the anchor rod.

  Knock in the clamping bush using a hammer and the assembly aid until the lower end of the clamping bush is flush with the lower edge of the dowel plate.

  Insert the ball socket on the anchor rod.

  Insert the spherical washer.

  Screw the M12 or M16 hexagonal nut to the anchor rod and tighten it carefully so that the dowel plate can no longer be twisted.

●   The dowel plate is located firmly under the concrete ceiling and serves as a template for the other drilled holes.

Then set all the other holes:

  Drill through the dowel plate into the concrete ceiling at all additional holes in the dowel plate (one or three additional holes).

The dowel plate serves here as a template.

  Clean the drilled holes, check the drilled holes, prepare the capsule, fill the drilled hole with injection mortar, screw the anchor rod into the drilled hole, wipe the injection mortar off, allow the injection mortar to harden and screw the dowel plate on as described above.

The wedge is only used for the first anchor rod.

As soon as the injection mortar has hardened:

  Tighten all hexagonal nuts with the correct torque.

If the hexagonal nuts cannot be tightened with the necessary tightening torque (e.g. because the anchor rod turns with them), the anchor rod is not fitted correctly.

In this case:

─     Do not continue installing the HB crane installation.

─     Call ABUS for further instructions.

On all anchor rods:

  Screw the lock nuts to the anchor rods. Screw until hand-tight.

  Seal the hexagonal nuts, lock nuts and anchor rods with sealing wax.

Do not cut off protruding anchor rods:

Technical data is stamped on the heads of the anchor rods. This enables later identification of the anchor rods. For this reason, the protruding parts of the anchor rods should not be cut off.

  Glue or attach the labels with approval number, conformity symbol, batch number and EAN code of the anchor rods in the dowel protocol.

  Complete the dowel protocol and add it to the crane test log book.

On every ceiling-mounted bracket 2LP/M16 or M20:

  Insert the M16x70 rib screws (2x) through the clamping plates (2x), ceiling-mounted bracket (1x) and retaining plates (2x).

  Hold the ceiling-mounted bracket under the dowel plate and loosely screw in the rib screws.

  First, screw in M16x70 rib screws (2x) until hand-tight.

The rib screws will later be tightened to the correct torque (after aligning the HB profile rail).

If final alignment of the ceiling-mounted bracket 2LP/M16 or M20 can now be done:

  Screw in the rib screws. 200 Nm.