Emseal BG System: Below Grade Expansion Joint

For use at structural expansion joints in foundation and tunnel walls and slabs both in positive and blind side construction.

  • Cast concrete walls where access to the positive side is possible (positive side conditions)
  • Cast concrete walls where access to the positive side is not possible after casting (lagging or single-side forming conditions)
  • Foundation and tunnel under slab conditions (slab is cast onto waterproofing membrane and BG System)

Where access to walls is possible and the joint runs through the floor slab, the BG System would be used on the underside of the floor slab and would transition through a factory-welded outside-90 to BG System installed into the wall joints.

At the top of foundation walls, the BG System would transition to RoofJoint in softscapes (vegetative roofs, soil and turf, etc.), and to one of our FP (For Plaza) systems in hardscapes (pavers, asphalt, concrete).

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