Abutment and support elements

recommendations

B¹ one-gang box
Artikel-No. 1255-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ one-gang junction box
Artikel-No. 1265-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ large conduit one-gang junction box
Artikel-No. 1260-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ wall light connection box
Artikel-No. 1248-01
  • space for 3 terminal blocks and associated cables
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
B¹ universal wall exit
Artikel-No. 1248-03
  • Accessory fitting without drilling or dowelling
  • space for 3 terminal blocks and associated cables
  • Grey front part version for exposed concrete applications
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
B¹ electronics box
Artikel-No. 1268-01
  • with separator wall for separating electrical circuits
  • with 4 screw domes
  • Suitable for all types of formwork
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Standardised combination distance 71 mm
B¹ Two-gang junction box
Artikel-No. 1269-01
  • 6 screw domes
  • Suitable for all types of formwork
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Standardised combination distance 71 mm
Abutment for adhesive foil
Artikel-No. 1205-02
  • for support element Ø 20 mm
  • Fixing to formwork using 1219-00 adhesive foil
Abutment
Artikel-No. 1210-02
  • for support element Ø 20 mm
  • can be combined with itself, with one-gang boxes, one-gang junction boxes, junction casing, universal installation housings and distance pieces 91
  • Fixing to the formwork using expanding dowels, nails or screws

Abutment and support elements

The on-site mixed concrete programme offers special abutments and support elements for the installation of opposing one-gang boxes or the installation of one-gang boxes and junction casings on the opposite side of the formwork. For this purpose, there are holders in the back of the item that provide the support elements with a anti-rotation hold. The curved base of the box facing outwards forms an integrated spring travel, which is used to compensate for component-related tolerances when setting the opposing formwork by compressing it.
  • Two abutments for fixing to the working formwork using expanding dowels, nails, screws or adhesive foil
  • No blocking of conduit entries thanks to the anti-rotation support element attachments in the back of the one-gang boxes and junction casings
  • The integrated spring travel ensures a secure hold between the working and opposing formwork and compensates for construction tolerances
  • Thanks to their star-shaped contour, the support elements ensure that the concrete flows around the entire surface

Calculation for the supporting elements

Calculation for the supporting elements

Installation to the opposing formwork side by means of a support element

To determine the support element length, simply position the desired one-gang boxes opposite each other and stop at the planned wall thickness.
To determine the support element length, simply position the desired one-gang boxes opposite each other and stop at the planned wall thickness.
Afterwards, the required support element length can simply be measured at the markings provided on the B¹ one-gang box and then sawn off.
Afterwards, the required support element length can simply be measured at the markings provided on the B¹ one-gang box and then sawn off.
The prepared B¹ one-gang box protrudes approx. 5 to 10 mm beyond the planned wall thickness, so that the unit is braced between the working formwork and opposing formwork when the formwork is closed.
The prepared B¹ one-gang box protrudes approx. 5 to 10 mm beyond the planned wall thickness, so that the unit is braced between the working formwork and opposing formwork when the formwork is closed.
The integrated spring travel in the rear part of the B¹ one-gang box compensates for construction tolerances, such as the breathing of the formwork during the concreting process, and holds the B¹ one-gang box securely in position.
The integrated spring travel in the rear part of the B¹ one-gang box compensates for construction tolerances, such as the breathing of the formwork during the concreting process, and holds the B¹ one-gang box securely in position.

Note

On request, we can supply support conduits with Ø 20 mm for wiring through the support element.

Dimensions / Form

Product length:
101 mm

Assembly / Installation

Assembly type:
BB (solid construction)

Safety / Properties

Special application:
on-site mixed concrete
Instruction

Concrete construction B¹

Assembly instructions

7.8 MB | 24/07/2023
Electrical installation in on-site mixed concrete and as part of the 3D concrete printing process.
Brochure

Electrical installation in on-site mixed concrete and as part of the 3D concrete printing process.

Boxes, housings and systems.

78.4 MB
B¹ one-gang box
Artikel-No. 1255-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ one-gang junction box
Artikel-No. 1265-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ large conduit one-gang junction box
Artikel-No. 1260-01
  • with 4 screw domes and 2 expanding claw fields
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
  • Standardised combination distance 71 mm
B¹ wall light connection box
Artikel-No. 1248-01
  • space for 3 terminal blocks and associated cables
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
B¹ universal wall exit
Artikel-No. 1248-03
  • Accessory fitting without drilling or dowelling
  • space for 3 terminal blocks and associated cables
  • Grey front part version for exposed concrete applications
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Suitable for all types of formwork
B¹ electronics box
Artikel-No. 1268-01
  • with separator wall for separating electrical circuits
  • with 4 screw domes
  • Suitable for all types of formwork
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Standardised combination distance 71 mm
B¹ Two-gang junction box
Artikel-No. 1269-01
  • 6 screw domes
  • Suitable for all types of formwork
  • 2-piece with moulded rear part
  • Two slots for B¹ Prefix® system wings
  • Rear part of box with slot for support element
  • Standardised combination distance 71 mm
Abutment for adhesive foil
Artikel-No. 1205-02
  • for support element Ø 20 mm
  • Fixing to formwork using 1219-00 adhesive foil
Abutment
Artikel-No. 1210-02
  • for support element Ø 20 mm
  • can be combined with itself, with one-gang boxes, one-gang junction boxes, junction casing, universal installation housings and distance pieces 91
  • Fixing to the formwork using expanding dowels, nails or screws