Joint bridging

Joint bridging

Bridging building and dilatation joints is crucial, especially if a foundation with a foundation earth electrode has building or dilatation joints. These must be effectively bridged to ensure good conductivity.


Inside the foundation, bridging can be achieved using an expandable connection. A foamed plastic block, which is embedded in the concrete, contains a loop of Banderder. This adapts to the foreseeable displacements of the concrete elements. Please note that such bridging can no longer be controlled after concreting.


Alternatively, there is the option of a visible connection. Connection points are created on both sides of the joints and connected with a flexible cable. This type of visible bridging can be checked and verified at any time. In addition, the connection points can be used for earth conductors and equipotential bonding conductors with little effort.


This solution is independent of the construction of the individual building sections. Minimum requirements are:
  • The earth conductors of individual concrete segments must be continuously connected
  • Cast-in dilatation bridges must be corrosion-resistant.
  • Minimum cross-section: 50 mm² Cu or 75 mm² stainless steel (V4A).
System overview
  • Bridging
Made of galvanized strip steel 30 × 3 mm for setting in concrete, complete with mounted universal clamping plates, embedded in foamed plastic, which creates the recess. Total length: 44 cm
Article number 48025
Eldas number 156940307
Base Unit Piece
availability Delivery according to agreement
Weight (g) 980
Price on demand
of insulated copper conductor 50mm 2 with pressed-on cable lugs for M10
Article number 48022
Eldas number 156940917
Base Unit Piece
availability Delivery according to agreement
Weight (g) 278
Price on demand

This system can be found in the following categories and applications: