Airport Breakaway Signs

[jdale]

My local airport has asked us to quote some signage including mounting posts that break away if struck. At the moment none of their signs are like this and Transport Canada has mandated that they be changed.

Currently they have 4x4 posts in the ground to support the fairly large signs. Some are up to 4'x8' on 5/8 Plywood.

Has anyone had to construct this before??

 

[GaSouthpaw]

I'd use the break-away u-channel posts. You should be able to mount just about any sort of backer to them.

 

[Billct2]

Yep, there are several varieties of breakaway systems. Traffic sign suppliers have them. .

 

[MikePro]

we don't bother with breakaway posts..... we use breakaway bolt systems

you can most likely even use the existing footing, assuming you can put your trust in its original construction, but cut low to the ground and attach matchplates to that and the pole base.