Use 3/4-Inch Clear Angular Stone for Base and Drainage

here using the wrong drainage and the wrong base material this is freaking huge and where a lot of retaining walls fail if you have a contractor show up at your site using p Rock and that's what they're going to base your wall on or they're going to use it for your drainage Zone Fire them right there it's the worst possible thing you can do because perck as water flows through it pck rolls and moves it doesn't have enough weight to it and it has the wrong shape to lock together what we always use is 3/4 clear so no matter what happens when we use a 3/4 inch Stone and it's angular in nature no matter which way you put it you put it down these rocks lock together just by their very nature no matter what you do they lock together where with pcks when you try to put them together they roll they move and they they go all over that's what happens is you when you get a lot of water running through a retaining wall behind that retaining wall those rocks are rolling they're actually loosening up the soil behind the retaining wall and that's allowing the fines in the soil to then migrate it's actually loosening up the soil behind it so as this the rocks are rolling the silt is then coming out of it because of the the movement of the Rocks you need a 3/4 in or larger stone for both your base and for your drainage zone now some people will say that you can use a concrete base I would not I would not use a concrete base for underneath the retaining wall some people will also say that you can use um class 5 and you can use class 5 the reason I like 3/4 clear for my base is it does allow the water to flow through it and not stay underneath your retaining wall uh one of those miss that I want to dispel I said I was going to dispel some Miss there's contractors that are going out and doing commercial work that don't even get this next point when you butt up to a building building like this with your retaining wall you do not and I repeat this do not