Wrap and Twist in FormplyAS 6669 provides a 30mm flatness limitation for formply sheets. To measure flatness,formply sheets are placed concave down on a flat surface and any bow or twist exceeding30mm above the flat fails the product Standard.In addition, sheets must be able to be pushed flat using “palm pressure”, of approximately15kg.Formwork plywood supplied to the market with flatness …

Stress-grades range from F7 to F34. Stress grades F11, F14, F17, F22 and F27 are the mostcommon.AS 6669 specifies four (4) surface qualities Class 2, Class 3, Class 4 and Class 5. Thesesurface qualities are aligned with AS 3610.The most common surface classes from AS 6669 for formply manufactured in Australasiaare: Class 2Class 3Good 1 side – Class 2 one …

Formply is usually sold on the basis of surface class, stress-grade and bond quality. Forexample “Class 2 F17 A Bond”.This indicates that the formwork plywood is intended to provide a Class 2 surface finish,has a stress-grade of F17 and has a Type A bond.AS 6669 permits three (3) bond types as follows: A Bond – Durable for 50 years weather …