How to minimise Distortion (Bow and Twist) inFormply Do not use any new panels showing bow or twist out of the pack. Wheredistortion exceeds 30mm, these panels fail the product standard. They shouldnot be used and returned to the manufacturer.Prevent/Minimise Exposure to MoistureWhere formply panels that have been supplied flat on site distort, there is onlyone cause, this is exposure …

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 …