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BEWI GHP - Ground Heave Protection

Verified by manufacturer 2 months ago

Slab

BEWI UK Insulation

Third party certifications:

BBA Agrément Certificate
Certificate type

A range of EPS cellular void formers used to limit the pressure exerted on in-situ reinforced concrete floors or piled ground beams by the expansion of clay soils, (clay heave), or ground recovery.

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+44 (0)870 600 3666 Website

Application

BEWI Ground Heave Protection provides a stable platform to support a specified depth of wet concrete during construction.
Suitable for use beneath beams and slabs.

Description

The BEWI Ground Heave Protection boards are a cellular-structured void formers cut from expanded polystyrene (EPS). The boards are manufactured in a range of thicknesses to meet the application – Beam, Slab or Insulated Slab - requirement and the soil plasticity and predicted ground movement on the site. All BEWI Ground Heave Protection boards are supplied with a bonded polypropylene top and bottom sheet.

Features and benefits:

Protects a buildings ground beams and or in-situ suspended reinforced piled floor slabs against the upward pressure caused by ground heave.
BBA-certified.
Meets NHBC Technical Standards.
Board sizes aid a fast, easy installation.
Bonded bottom sheet removes need for sand/ cement blinding layer.
Available with bonded EPS insulation board.
Lightweight boards limit H&S risk on site.

General information

Color	White Black Grey
Material	Expanded polystyrene (EPS) Polypropylene
Shape	Square Rectangle
Length	1200 mm
Width	1200 mm 300 mm 450 mm 600 mm
Height	82 mm 85 mm 90 mm 152 mm 155 mm 160 mm 217 mm 220 mm 225 mm Show more Manufacturer guidance Depth of cellular EPS structure.

Uniclass	Pr_25_71_29_16 Compressible board substructure formworkPrimary
CAWS	E20/45 Collapsible board substructure formwork E20/182 Collapsible board substructure formwork

Specification data - Compressible board substructure formwork

Third-party certification	BBA Agrément certificate.
Material	Expanded polystyrene (EPS) and polypropylene.
Thickness	90 mm. 160 mm. 225 mm. Manufacturer guidance Depth of cellular EPS structure. The boards are manufactured in a range of thicknesses to meet the application requirement and the soil plasticity and predicted ground movement on the site. See Ground Heave Protection Technical Data Sheet, table 1.

Dimensions	1200 x 1200 mm.
Grade depth options	Product grade 1. Guidance for specification option: Safe-load 7 kN/m², fail-load 10 kN/m². 100–220 mm concrete thickness. Product grade 2. Guidance for specification option: Safe-load 9 kN/m², fail-load 13 kN/m². 221–300 mm concrete thickness. prodcut grade 3. Guidance for specification option: Safe-load 10 kN/m², fail-load 15 kN/m². 301–340 mm concrete thickness. Product grade 4. Guidance for specification option: Safe-load 13 kN/m², fail-load 18 kN/m². 341–460 mm concrete thickness. Product grade 5. Guidance for specification option: Safe-load 18 kN/m², fail-load 24 kN/m². 461–660 mm concrete thickness. Product grade 6. Guidance for specification option: Safe-load 24 kN/m², fail-load 32 kN/m². 661–900 mm concrete thickness. Product grade 7. Guidance for specification option: Safe-load 30 kN/m², fail-load 40 kN/m². 901–1140 mm concrete thickness. Product grade 8. Guidance for specification option: Safe-load 40 kN/m², fail-load 50 kN/m². 1141–1540 mm concrete thickness. Product grade 9. Guidance for specification option: Safe-load 50 kN/m², fail-load 65 kN/m². 1541–1940 mm concrete thickness. Show more

Sustainability data

Material	Expanded polystyrene (EPS) Polypropylene

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

BBA Certificate - Heave Protection