On Sat, 01 Mar 2014 18:32:58 +0000, polygonum wrote:
>> Bit baffled by the Fence post fixing foam though. Can't see the
>> benefit over Postcrete.
> I am not sure of the specific benefits. However, it is light to
> transport.
>
> You can see thousands of motorway crash barriers have been fixed with
> some form of foam - usually a very obvious "ring" of excess where the
> post enters the ground.
I'd guess one of the benefits is that it'll give a bit, then pull out, at
a lower force than it'd take for the barrier to sheer or rip apart.
Useful properties when you're trying to catch something that's heading in
a naughty direction at speed... Especially when you've not got long to
put it all together in the middle of the night after somebody did
something silly.