BBA Agrément Certificate
Collapsible void former with integral permanent formwork for use under reinforced concrete ground beams. The product has a number of variables including panel width, depth and loading characteristics.
Designed for use beneath reinforced concrete ground beams to protect against the potential effects of ground heave.
Comprising of a cellular construction of moulded expanded polystyrene combined with a robust polypropylene permanent formwork, which has been designed and tested to tight tolerances to achieve the specified performance characteristics. It is available in a variety of depths and grades to suit the most commonly encountered combinations of soil heave potential and concrete depths.
Features and benefits:
Available in panels.
E20/190 Substructure formwork for ground beams and pile caps
E20/47 Compressible board substructure formwork
NHBC Technical Standards.
Moulded EPS board with integral polypropylene formwork.
Fire retardant class
Third party product certification
Wall width (overall)
Insert requirement, available 300–1200 mm in 25 mm increments.
Installing permanent formwork
Dependent on the total load that will be exerted onto the panels. Consult manufacturer for information.
To suit required dimensions of the ground beam.
Grade depth options
9 / 13.
Safe load/ fail load (kN/m²), 300 mm maximum concrete depth.
13 / 18.
Safe load/ fail load (kN/m²), 460 mm maximum concrete depth.
18 / 24.
Safe load/ fail load (kN/m²), 660 mm maximum concrete depth.
24 / 32.
Safe load/ fail load (kN/m²), 900 mm maximum concrete depth.
Widths and depths to suit specific beam sizes.
Compressible EPS honeycomb with a heavy-duty polypropylene top.
Country of product manufacture
Both expanded polystyrene (EPS) and polypropylene can be recycled.