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MECHANICAL ANCHORS > Superplus Undercut Anchor
Self-Undercutting Anchor

Typ ILSTyp BLSSuperplusSuperplus2

BLS & ILS

The undercut fixing system that does not require a special setting tool.

General purpose heavy duty anchor 

Product Description:

The LIEBIG SUPERPLUS“ is available in zinc plated carbon steel and A4 stainless steel. Its design offers the high load capacity and reliability of an undercut anchor, but with the ease of installation of an expansion anchor. In contrast to competing undercut anchor systems, the SUPERPLUS does not require special drill bits or setting tools. You need only apply the torque to create the self-undercut.

Features:

  • High capacity in cracked and non-cracked concrete 
  • High reliability due to undercut technology 
  • Simple installation, no special drill bit or setting tool required 
  • Applying torque creates undercut 
  • Two approved embedment depths per diameter 
  • Lower installed cost than traditional undercut anchors 
  • Reduced edge distances and spacings 
  • Shallow embedment depths 
  • High tension and shear capacity 
  • Economical 

Applications:

  • Power plants 
  • Machines 
  • Strut system 
  • Steel and industrial plants 
  • Facades 
  • Subway cassions 
  • Cable trays 
  • Base plates 

Function:

Automatically self-undercutting. The unique design of the SUPERPLUS causes an undercut to be created when the installation torque is applied. As torque is applied to the anchor the cone is drawn into the anchor sleeve and the sleeve’s outer cutting teeth expand and undercut into the base material. This results in a durable mechanical interlock with base material that functions in both cracked and non-cracked concrete.

Material:

  • Grade 8.8 carbon steel, zinc plated and blue passivated 
  • A4-80 stainless steel 

Base Material:

Cracked and non-cracked concrete: C20/25 to C50/60

Approval:

ETA-01/0011 – Option 1 – Carbon steel, zinc plated
ETA-05/0013 – Option 1 – A4 stainless steel

Load Range:

Tension: Nperm = 4.3 - 56.1 [kN]
Shear: Vperm = 4.3 - 90.7 [kN]

Product Range:

BLS: M8, M12 and M16, carbon steel, zinc plated and blue passivated / A4 stainless steel
ILS: M8, carbon steel, zinc plated and blue passivated

Installation:

Through-fix installation shown

Installation_Superplus 

Carbon steel, zinc plated
SUPERPLUS BLS

Carbon steel, zinc plated 

A4 stainless steel
SUPERPLUS BLS
 

A4 stainless steel 

Internally threaded, Carbon steel, zinc plated
SUPERPLUS ILS

Internally threaded 

Carbon steel, zinc plated

Permissible loads for single anchors with no infl uencing edge distances or spacings. Loads are calculated using partial safety factors from ETAG 001 and the characteristic anchor and installation data.

Design calculations shall follow the requirements of ETA-01/0011.

Carbon steel, zinc plated

Carbon steel, zinc plated

Installed Anchor:

 Installed anchor

  1. The permissible loads have been calculated using the partial safety factors for resistances stated in the ETA-approval and a partial safety factor for actions of gF = 1.4. The permissible loads
    are valid for unreinforced concrete and reinforced concrete with a rebar spacing s ≥ 15 cm and reinforced concrete with a rebar spacing s ≥ 10 cm if the rebar is 10 mm or smaller.
     
  2. The permissible shear loads are based on a single anchor without infl uencing concrete edges. For shear loads applied close to an edge (c ≤ 10 hef or 60 d) concrete edge failure must be checked per ETAG 001, Annex C, design method A. 
  3. Concrete is considered non-cracked when the tensile stress within the concrete is sL + sR ≤ 0. In the absence of detailed verifi cation sR = 3 N/mm² can be assumed (sL equals the tensile stress within the concrete as a result of external loads, forces on anchors included). 
  4. The permissible bending moments are only valid for the threaded stud (e.g. in case of a distance mounting). 
  5. If spacings or edge distances become smaller than the characteristic values (i.e. s ≤ scr,N and/or c ≤ ccr,N) a calculation per ETAG 001, Annex C, design method A must be performed.
    For details, see ETA-01/0011.
     

A4 stainless steel:

Permissible loads for single anchors with no infl uencing edge distances or spacings. Loads are calculated using partial safety factors from ETAG 001 and the characteristic anchor and installation data.

Design calculations shall follow the requirements of ETA-05/0013.

A4 Stainless Steel  

A4 Stainless Steel

Installed Anchor

Installed Anchor

  1. The permissible loads have been calculated using the partial safety factors for resistances stated in the ETA-approval and a partial safety factor for actions of gF = 1.4. The permissible loads are valid for unreinforced concrete and reinforced concrete with a rebar spacing s ≥ 15 cm and reinforced concrete with a rebar spacing s ≥ 10 cm if the rebar is 10 mm or smaller. 
  2. The permissible shear loads are based on a single anchor without infl uencing concrete edges. For shear loads applied close to an edge (c ≤ 10 hef or 60 d) concrete edge failure must be checked per ETAG 001, Annex C, design method A. 
  3. Concrete is considered non-cracked when the tensile stress within the concrete is sL + sR ≤ 0. In the absence of detailed verifi cation sR = 3 N/mm² can be assumed (sL equals the tensile stress within the concrete as a result of external loads, forces on anchors included). 
  4. The permissible bending moments are only valid for the threaded stud (e.g. in case of a distance mounting). 
  5. If spacings or edge distances become smaller than the characteristic values (i.e. s ≤ scr,N and/or c ≤ ccr,N) a calculation per ETAG 001, Annex C, design method A must be performed.
    For details, see ETA-05/0013.
     

Internally threaded anchor, Carbon steel, zinc plated

Permissible loads for single anchors with no influencing edge distances or spacings. Loads are calculated using partial safety factors from ETAG 001 and the characteristic anchor and installation data.

Internally threaded anchor, Carbon steel, zinc plated

Internally threaded anchor, Carbon steel, zinc plated

Installed Anchor:

Installed Anchor 

  1. The permissible loads have been calculated assuming that grade 8.8 fasteners are used and using the partial safety factors for resistances stated in ETA-01/0011 and a partial safety factor for actions of gF = 1.4. The permissible loads are valid for unreinforced concrete and reinforced concrete with a rebar spacing s ≥ 15 cm and reinforced concrete with a rebar spacing s ≥ 10cm if the rebar is 10 mm or smaller. 
  2. The permissible shear loads are based on a single anchor without infl uencing concrete edges. For shear loads applied close to an edge (c ≤ 10 hef or 60 d) concrete edge failure must be checked per ETAG 001, Annex C, design method A. 
  3. Concrete is considered non-cracked when the tensile stress within the concrete is sL + sR ≤ 0. In the absence of detailed verifi cation sR = 3 N/mm² can be assumed (sL equals the tensile stress within the concrete as a result of external loads, forces on anchors included). 
  4. If spacings or edge distances become smaller than the characteristic values (i.e. s ≤ scr,N and/or c ≤ ccr,N) a calculation per ETAG 001, Annex C, design method A must be performed. 

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