Replacing deck posts - how to attach bearers?

[BriefObsessions]

Hi,

I would like to replace our deck posts for the purpose of supporting a fly-over roof structure above the deck. How can I attach the bearers to the posts? You'll see in the picture attached that the builders notched the post to accept the double 290x45 bearers (leaving only 20mm of post), but I wouldn't want to do this with a post that continues up to support a roof.

Can you use something like a joist hanger in this situation? Would need to cut the bearers down to length obviously. I come across these brackets in NZ that would do the job, but do they meet Australian standards? https://www.bunnings.co.nz/bowmac-beam-support-hot-dip-galvanised-b109_p0338087

Thanks in advance.

[JacobZ]

Hi @BriefObsessions,

Welcome to the Bunnings Workshop community, it is wonderful to have you with us.

Unfortunately, this is not something we would be able to give you a definitive answer on because structures of this nature need to have engineering plans produced and submitted to your local council for approval.

There will be considerable wind and lateral loads applied to those posts, so each structural connection needs to be designed in a way to exceed the expected loads applied to them.

I'd suggest you speak with a structural engineer for their guidance. They will be able to design a solution that is capable of supporting your deck as well as supporting the flyover roof you are planning to build. 

Let me know if you have any further questions.

Jacob

[BriefObsessions]

Thanks for your replying Jacob. I was looking at using one of the patio roof kits which come with generic engineering plans. I'll reach out to some and see if they can help with my particular situation.