resin or bolts whats the strongest

Mmmm

I would guess both, e.g resin the bolt in.

Trouble is if you wish move ramps in future, maybe a bit of a sod to remove.

So, I'd stick with just decent anchor bolts (assuming concrete sound/solid).

 

if you anchor brackets down onto concrete (dig small holes and bury the bottom of the brackets in concrete) and then attach the ramps too the brackets, you get a solid base PLUS you can move the ramps afterwards if necessary. you only need to go down about 3"-4" to get a strong anchor point.

 

Resin bolts always do the best job. Keep some of the resin, and then if you need to move the equipment fill the holes with the resin.

 

fix your threaded bar into the concrete before it's poured,thats how the pro's do it.

 

base that is Lol

 

Tony,

Firms that supply and fit car ramps for a living, all use high load anchors.

These anchors are the type that have a very heavy tube with a centre bolt or stud leading down to an expansion cone down in the concrete.

Popular brands include the Rawl Safety Plus Anchor, Liebig Safety bolt and Hilti HSL anchor.