best heavy duty fixings into concrete?

[markharro]

I need to bolt down a post and also 2 rollers being running gear for a cantilevered gate. what are the best bolts/fixings to use? thanks

[Iceverge]

Chemical anchor and threaded rod. 

 

 

[Mr Punter]

25 minutes ago, Iceverge said:

Chemical anchor and threaded rod. 

+1

Ensure stud, washers and nuts are corrosion resistant (stainless or galv).  Clean the drilled holes thoroughly.

 

[Onoff]

I'd cast in J bolts for that as a "holding down unit". Hooked round mesh going down into the concrete.

 

Don't get me wrong I love chemical anchors.

[Conor]

Your gate kit should have them included or at least the spec. Mine required 12mm SS rods cast into the concrete. Think they had to be 250mm long, 50mm proud, 200mm set in. A rather large sliding gate tho.

[SteamyTea]

1 hour ago, Onoff said:

I love chemical anchors

 

 

[Andeh]

I also really like chemical anchors! 🥰

 

I'm almost disappointed I don't have more stuff to bolt down with it.  It's a hard life post-build... When you run out of fun stuff to sink your teeth into...  

[Onoff]

Again, J bolts hooked under reinforcing mesh or some similar design of holding down unit with plates and long studs. Windage against a gate and offset loads will just worry chemical anchors out over time. With something locked into the concrete you're trying to "worry" the whole, large concrete footing.