Pouring a 100" by 100" concrete pad for a 94"by94" hot tub. When filled with water the brochure says it will weigh roughly 4700lbs. I figure call it 6000lbs with people (we won't ever have more than that in it).
I want to ensure it's done right. How thick should I ensure the concrete is below it to avoid cracking? Is there any value in letting the concrete sit for a period of time before putting the tub on it? How long? Thanks!