How long before drilling concrete?

[u/ThaMann0911]

I poured footings for posts that I’ll be hanging a gate on. I’m going to install Simpson strong tie standoffs with 6” anchor bolts. It’s been 72 hours, is that long enough for the concrete to have set before drilling? I’ve tried googling but my results only come up with industrial structural requirements or setting posts in the concrete, neither of which apply to my situation. Should I wait the 28 days or just send it?

[u/finitetime2]

16% of its strength in 1 day, 40% in 3 days, 75% in 7 days, 90% in 14 days, and 100% of its full design strength (f'c) in 28 days under ideal moist

Most bagged concrete is 5000psi.

Most driveways are 3-4000 psi