I think I've set a record. It was just under 1 1/2 hours. That's calc'd and drawn.
Now, to be fair, it's a replat of two lots into three and I did the original subdivision and first replat, so I really had all I needed.
Still in all, not bad for having draw a plat, suitable for recording, that has to go before a city and also the county (for the Texas boys, Chapter 242 is in force but the ETJ line splits the subdivision).
Sleep on it and look at it again tomorrow with fresh eyes. The easy ones tend to be that way for a reason.
A half hour review before you put it out the door sometimes is time well spent.
I caught a 5' dimensional error on a set of civils just as I was headed into the field to stake out piles, would've cost tens of thousands to correct and would've been on MY head had I not checked them against the structural details.
That was a quickie calc as well. The easy ones scare me more than the hard ones.