Hi, Phil! Well, this holiday weekend (Columbus Day) is when I'm having the stones delivered and spread. Our weather is supposed to be dry and nice. So it's a good time to do this outdoor project.
One clarification I need from you is whether recycled concrete is acceptable as a base. Above you had mentioned only using 'road grade CRUSHED rock'. As of right now (there's still time to change things...lol), for the part of our drive that we're widening, here's what I plan to do:
* I'm having #4 recycled concrete delivered on Saturday morning. It will go over the existing chunks of broken up asphalt to create a base of 6-8".
* After leveling and compacting the #4 down, I'm going to have #304 recycled concrete delivered on Monday and plan to have it 3-4" deep. Again, it will be leveled and compacted.
* Finally, I was going to have #57 limestone top it off at about 2" deep.
If we end up paving this section down the road, I'd put down 411 gravel with fines and pack it down prior to having asphalt or pavers laid down.
For the bottom of the drive, I still plan to have about 2 inches of #57 limestone added to the existing base, which is only about 6" of compacted gravel. Down the road if we end up paving this section, I'm going to need to excavate this lower 100 feet and put in a proper base. The previous asphalt in this section was broken up badly. That's why we removed it and used it as a base for the upper part of drive that we plan to widen. After digging out the old corroded drainage pipe last night (with my neighbors backhoe), I realized how insufficient the base is. But I'd deal with this down the road.
Anyway, I really appreciate your help. I've been reading various things and talking to various so-called "experts" and others, but a lot of their advice conflicts so it get confusing to me sometimes. Any additional help you can provide regarding the wisdom of using recycled concrete (potential runoff issues? stability?) versus asphalt grindings or crushed stone would be helpful. Also, if you have any other tips, I'd be thankful. Thanks for your patience with me. But I guess that's what JustAnswer is for. I'll rate you again you address these other questions. Thanks!