All KD F17/F27Glue lam hardwood posts and beamsAll sizes of sawn, sized and dressed unseasoned structural hardwood (all our sawn hardwood is graded to minimum F17 and ACQ treated to H4)Building polesBridge and boardwalk timbersStep treads and stringers

Formply or Film-Face Plywood? – The Facts Explained!Formply is the well-known plywood specifically engineered for the Concrete Formwork Industry. Certified to specific stress-grades, Formply is typically available in various strength ratings from F11 thru to F27. Formply sheets are 17.5mm thick (historically the most popular choice), plus 12mm and 25mm are now also available in 1800 X 1200mm and 2400 …

The strength of Australian timber is described in terms of “stress grades“. Stress Grading is a way of classifying timber, either visually or by mechanical means to indicate the basic properties to be used for structural design purposes. The stress grade is designated in a form such as “F14”, which indicates that the timber’s working stress in bending is approximately 14 MPA (Megapascals). The timber stress …