Guidance needed - fixing 3mtr posts

[HERTS P&D]

This site should help you out:

http://www.shade4less.co.uk/?gclid=CLm74L2WhLkCFXLLtAodHiYAlw

Andy

 

[Nagartath]

As above that post will snap under load before it comes loose of the concrete.

You could use a post foot similiar to this but a bit beefier

http://t1.gstatic.com/images?q=tbn:ANd9GcT2zQWUVHVOSm0Eix77oW8isF_-o1O3vauXL3DQnNkvxQFsaA7EWA

Alternatively having 2 posts with a solid bracing between them will make it much much stronger and mitigate the need for crazy depth holes.

Thanks guys, I was planning on bracing all three posts, kind of pergola with a sail

Duncan