Post Size, Strength & Footings
Choosing the right size post will ensure your fence and gates perform well for years to come.
Typically, flanged (bolt down) posts will be 50mm longer than the chosen fence height (e.g. 1250mm long post on a 1200mm high panel).
On the other hand, inground posts should be at least 600mm longer than the correlated panel (e.g. by using a 1800mm long post for an 1200mm high panel). Consider the below footing sizes in non-cyclonic regions:
Post Type | Suggested Footing | Approx Post Mix |
Intermediate fence post | 200mm diameter x 600mm deep | 2 x 20kg bags |
End & corner posts | 250mm diameter x 600mm deep | 2-3 x 20kg bags |
Gate Posts (gate leaf up to 1200mm wide) | 250mm diameter x 700mm deep | 4-5 x 20kg bags |
Gate Posts (gate leaf up to 1500mm wide) | 300mm diameter x 800mm deep | 5-6 x 20kgs bags |
Footing sizes are provided as a general guide for standard residential installations in non-cyclonic areas. Site conditions and wind loads vary, and larger footings may be required in some circumstances. Independent engineering advice should be sought where appropriate.
