Structural plywood is an engineered wood panel with defined and codified physical and mechanical
properties. Structural plywood in Australia and New Zealand is manufactured to Australian/New Zealand
Standard AS/NZS 2269 Plywood – Structural. This Standard sets out the minimum performance
requirements for the manufacture of structural plywood acceptable to users, specifiers, manufacturers
and building authorities in Australia and New Zealand.
Plywood manufactured to AS/NZS 2269 is
suitable for use in all permanent structures and is the plywood type intended for use in structural
applications discussed in this manual.
Structural plywood branded with the EWPAA / JAS
ANZ mark certifies the product has been manufactured
fit-for-purpose to the structural plywood Standard
Structural plywood manufactured to AS/NZS 2269 is
available with one bond type and in a range of timber
species, stress grades, veneer qualities, veneer
arrangements (constructions) and thicknesses.
2.2 Bond Type
All structural plywood manufactured to AS/NZS 2269 has a permanent Type A phenolic resin bonding the
individual timber veneers. The Type A bond is produced from phenol or resorcinol formaldehyde and is
readily recognisable by its dark colour. The type A bond is durable and permanent under conditions of
full weather exposure, long term stress, and combinations of exposure and stress.
Even though the structural plywood phenolic bond is durable, the plywood will only be
as durable as the timber species from which it is made. If the plywood is going to be
used in weather exposed applications or under other exposure conditions of severe
hazard, the durability of the timber veneers must be considered and the plywood
preservative treated if required to meet the hazard requirement.
2.3 Timber Species Used
Structural plywood is manufactured from either hardwood or softwood timber veneers or a combination
of both. The dominant timber species used in structural plywood in Australia and New Zealand is
plantation pine (radiata, hoop or slash) however other timber species, including eucalypt hardwoods, are
2.4 Stress Grades
A stress grade defines a codified suite of strength and stiffness properties. There are eight possible
stress grades for structural plywood listed in AS 1720.1 Timber Structures Code. The stress grades are: F7,
F8, F11, F14, F17, F22, F27 and F34. The characteristic strength and stiffness properties for each stress
grade are tabulated in the Timber Structures Code AS1720.1-1997 and reproduced in Table 5.1A, Error!
Reference source not found. of this manual. The most commonly available stress grades are F8, F11
and F14, higher stress grades F17, F22, F27 and F34 are also available. However availability should be
checked before specifying.
2.5 Veneer Quality
There are five veneer qualities permitted for structural plywood in AS/NZS 2269. The standard veneer
qualities are A, S, B, C, and D. The five veneer grades allow structural plywood to be specified with face
and back veneer qualities to suit the intended application. These include decorative structural uses7
through to applications where aesthetics is not a consideration and structural performance alone is the
requirement. Other non-standard face veneer qualities are permitted under AS/NZS 2269.
Panels with A, S, B, and C faces are sanded smooth, D grade faces may be unsanded as
they are typically used in structural, non-aesthetic applications. Hence, there will be
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