I have a few sloping areas that I'm looking to convert into vegetable gardens. There was a dry stack wall there that was falling apart, so I tore it down and started prepping to build a stone and mortar wall. This will look consistent with the other parts of the property and I just like the look better overall.
I've been doing a lot of reading on this and, as always, there is a lot of conflicting opinion information out there.
The wall will be about 25 feet in length and between 3-4' in high. I'm using stone from the property to build the wall.
I've read that you should be below the frost line for a mortared wall. For CT this means below 40+". I'm not doing that. This seems excessive to me and (perhaps selfishly) I don't need the wall to stand for 2,000 years. I have dug down 24".
Here are my questions:
1. What are the next steps here? I've read that I should put compacted gravel stone on the base layer. If I have a 24" trench, how much gravel should I put down?
2. What do I do after the gravel layer? Do I need to put a cement layer first? Is the gravel enough?
3. Is it necessary to backfill with gravel before the soil? Seems like a smart step, and I'm fine doing it, but someone I spoke with recommended a foot of backfill before the soil. A foot seems like a lot.
I may have more questions but I think these are the most concerning right now.
Thanks in advance!!