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EXPAMETCONSTRUCTION
CI/SfB
UniclassL326 : P4131
EPICF63 : X4122
21.9 Xt6 JUNE 2009
S4•P33
SECTION 4HY-RIB® PERMANENTFORMWORK
HY-RIB
Hy-Rib® Introduction S4•P34Permanent Formwork
Hy-Rib® is an expanded metal sheet product, specifically developed
for use as permanent formwork to concrete. The profile of the open
mesh, in combination with the Hy-Rib® tangs, allows the
development of dense concrete nodules and indents on the face of
the Hy-Rib®, forming an enhanced mechanical key for the second
phase pour. In the case of visible elements, the resulting Hy-Rib®
surface is suitable for a rendered or tiled finish.
Hy-Rib® is primarily used in construction joint applications but it is
also used to form wall, beam and column surfaces and slab soffits,
where the formed surface will not be seen. It has also been used
successfully for sprayed concrete applications.
Hy-Rib® has an enviable portfolio of technical data. Independent
bodies have undertaken full scale testing programmes to determine
and verify its effectiveness in forming construction joints. The result
is a product with well defined engineering properties, established
formwork pressure characteristics and measured improvements to
the joint performance.
Hy-Rib® is certified for use as permanent formwork by the British
Board of Agrément (BBA).
For further information see www.hy-rib.com
Slab stopend construction
joints from 150mm thick.
No maximum depth. No upper
limit for depth of pour.
Hy-Rib® Range S4•P35Permanent Formwork
Hy-Rib® is available in 2000, 3000, 4000 and 5000mm lengths.
The edge rib is manufactured to nest tightly with the edge rib of
an adjacent Hy-Rib® sheet. This forms a tight ‘sheet to sheet’
connection throughout its length and maximises the rigidity of
the sheet joint in the temporary works condition.
Hy-Rib® tangs are designed to become embedded in the first phase
concrete pour, anchoring the sheet, preventing any risk of the sheet
de-bonding from the concrete. The inner ribs provide inherent
stiffness in the length of the sheet so that it can span between
supports.
All Hy-Rib® is colour coded to enable the easy identification of the
steel type and gauge of the sheet. An open mesh allows bleed
water to escape providing a dense, impenetrable concrete zone at
the surface and immediately behind the Hy-Rib®.
Wall stopend constructionjoints. Thin wall from 150mmthick. Thick wall no maximum.No upper limit for depth ofpour.
• Hy-Rib® forms an enhanced mechanical key for the second phase pour. Joint surfaces require minimal preparation.
• All Hy-Rib® is colour coded to enable the easy identification of the steel type and gauge of the sheet.
• Formwork pressure is significantly less than that developed with traditional forming materials, reducing the overall support requirement.
• Concrete is easier to see and monitor during pour andthe risk of trapped air and voids within the concrete is reduced.
• Hy-Rib® has been used successfully for sprayed concrete applications.
• The use of Hy-Rib® complies with Construction Designand Management (CDM) requirements to design out the risk of Hand Arm Vibration Syndrome.
• Certified for use as permanent formwork by theBritish Board of Agrément (BBA).
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Hy-Rib® offers important benefits in application. When used as
vertical formwork, the resulting formwork pressure is significantly
less than that developed with traditional forming materials,
reducing the overall support requirement.
Joint surfaces require minimal preparation prior to the next pour,
with the exception of the rebar cover zones. This minimises the
labour, mess and disposal requirements associated with scabbling,
chemical retarders and jet washing. The use of Hy-Rib® complies
with Construction Design and Management requirements to
design out the risk of Hand Arm Vibration Syndrome that is
associated with construction joint preparation.
Hy-Rib® joints are stronger in shear and flexure compared to
traditionally prepared joint surface and produce a high durability
surface layer.
Hy-Rib® provides a good performance with all concrete types.
Concrete is easier to see and monitor during pour and the risk of
trapped air and voids within the concrete is reduced.
The range of narrower sheet widths improves site productivity
and minimises wastage. It is also light weight for manual
handling.
Permanent Slab Soffit.Slab depth range from 75mm to 500mm
Hy-Rib® BenefitsPermanent Formwork
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Hy-Rib® was specifically developed by Expamet during the 1960’s
for use as a permanent formwork for concrete stop-ends, slabs,
retaining walls and columns. Since then Hy-Rib® has been
successfully used in numerous building and infrastructure
projects throughout the world.
Typical applications include:
• Construction joints in thin and thick bases and suspendedslabs.
• Vertical construction joints in thin and thick walls.
• Deep construction joints
• Keyway construction joints in nuclear applications.
• Circular pile or void formers.
• Capping beams.
• Sprayed concrete backgrounds (mine stabilisation).
• Secondary lining in tunnels.
• Render backgrounds.
• Underwater construction applications.
• Permanent wall and column formwork.
• Permanent soffit formwork.
• Industrial floor slabs.
Nuclear keyway
Factory pre-curved
Hy-Rib® ApplicationsPermanent Formwork
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Expamet Hy-Rib® Construction Sectors
Hy-Rib® has become synonymous with the construction of some
of the world’s most prestigious new structures. From airports to
railways, Hy-Rib® provides an engineered solution to the
construction industry’s needs:
• Airports
• Railways
• Water industry
• Highway structures
• Tunnels
• Nuclear installations
• Power stations
• Chemical production works
• Commercial, industrial, office and building complexes
Sprayed concrete background,
mine stabilisation
Render backgrounds
Construction SectorsPermanent Formwork
Expamet operate a continuous development programme and we reserve the right to amend specification without prior notification.
Please note, some products are not manufactured by Expamet and aretherefore excluded from our registration to BS EN 9001: 2008. Pleasecontact the technical department for further information.
All copyright, trade marks and unregistered design rights for the products detailed in this brochure are the property of Expamet BuildingProducts Ltd.
UK SALES AND DISTRIBUTION CENTRE
Expamet Building Products Ltd.Greatham Street, Longhill Industrial Estate (North)Hartlepool TS25 1PR United KingdomTel: Sales: +44 (0)1429 866611 Sales Fax: +44 (0)1429 866622General: +44 (0)1429 866688 Fax: +44 (0)1429 866633E-mail: [email protected]: +44 (0)1429 866655Technical Fax: +44 (0)1429 851873Tech E-mail: [email protected]: www.expamet.co.uk
IRISH SALES OFFICE
Michael Evans. Expamet Building Products Ltd Unit 7, Swords Business Park, Swords, Co. DublinTel: +353 (0) 1890 2392 Fax: +353 (0) 1890 2220E-mail: [email protected]
EXPORT
UK Export Office:Sales Tel: +44 (0)1429 866611 Sales Fax: +44 (0)1429 866622E-mail: [email protected]
FM 36694 EMS 45225
