Ecoply® Formrite® Formply
Formrite® is a high quality plywood produced predominantly from graded Pinus radiata. Overlaid with a hard durable resin-impregnated paper, it has a smooth finish, and its hard phenolic surface and outer veneers make it both reusable and durable. Glued with a phenol formaldehyde resin A-Type Marine bond, Formrite can withstand the rigours of construction moisture and with the addition of a cross-laminate construction it is also less likely to expand or contract when exposed to rain and temperature changes, making it an effective formply solution.
Features & Benefits
- Multiple number of re-uses – subject to sheet care and maintenance
- Suitable to modern optimised form systems such as table forms and jump forms
- Applicable to a range of frame spacings, concrete slab thicknesses and surface tolerances
- Provides builders and formworkers with an ideal surface for pouring concrete with a Class 2 concrete finish on the first pour
- Can be used on steel or timber form frame systems
- Lighter in weight than hardwood alternatives
CHH Woodproducts installation guidelines and AS 3610 recommendations must be followed.
Ecoply Formrite formply is manufactured under a third-party audited quality control programme and is certified by the Engineered Wood Products Association of Australasia (EWPAA) as compliant with AS 6669 for Plywood – Formwork.
Framing and Plywood Thickness
For a given thickness of wet concrete, Plywood and Framing centres depend on the F grade, plywood identification code, the design limit and the direction of the face grain.
Allow a 2mm to 3mm expansion gap on all sheet edges. If required, use polystyrene filler on joint sealer in the expansion gaps.
The objective of fixing the elements of a formwork assembly is to provide an appropriately strong rigid form that affords ease of handling, erection and stripping. The form face fixing should be designed to:
- Hold joints tightly together,
- Fix the plywood and framing so that the formwork assembly becomes a cohesive structure for handling and stripping, and
- Enable easy dismantling and maximum material recovery.
Additionally, the following will assist the formwork designer to achieve the required finish:
- When used with proper release agents, edge and face tapes and solid perimeter fixing, Formrite formply can achieve a Class 2 finish. Class 2 finish can only be assured for one pour per face as the subsequent condition of the face depends on the handling of others.
- If a Class 2 finish has been specified, it is a mandatory requirement of AS 3610 to provide test panels.
- Allow for expansion and contraction of the panels to avoid possible buckling as moisture uptake can increase the dimensions of the panel. An expansion gap of approximately 2mm is recommended.
- If forms are used often, use hot dip galvanised stainless steel or alloy nails or screws to avoid staining concrete.
- Reseal all cut edges.
Apply release agents sparingly. Heavy application may cause runs and colour variation in the concrete.