Roller gate track

[jd6110]

So I’m bolting down some 75mm x 6.5mm flat wit 18mm round welded to it to run gate wheels on. It’s in to farmyard wit no major traffic maybe 6 trucks per year. Question is 700mm spacin either side of round adequate Boltin down wit 12mm diameter anchor bolts?

 

[How much]

I would assume so if its on to some decent concrete , you could always add some extra bolts later if its causing an issue , but if its getting little use and is a straight drive over with out vehicles turning over it I would not think its likely to cause you any problems at all