Do you necessitate to put gravel lower than a concrete wipe?
Answers: I am a concrete worker, and the answer is yes. It helps near the drainage, and also with the settling of the concrete, so the cracks are minimal. You want 4 inches of gravel below 4 inches of concrete . Any less concrete and you will own problems in the effective future. Dig down 8 inches contained by your backyard the size of the pad you are pouring. Put 4 inches of gravel within and smooth. Pour the concrete over the gravel and finish. Good luck, and if you have any more question email me.
well, you obligation to remove any and all black dirt first. Reason for this is because black dirt can compress, and as it does this the concrete will own a void underneath it, and eventually crack-either from water that get under and freezes, or a short time ago because there's nothing below it to support it. You need to core the nouns out so that all the black dirt is gone. Then, receive pit run to fill the nouns back surrounded by, save for the end few inches which should be regular gravel. I'll give you a scenario: If you verbs the area out and shutting up digging 12 inches to get the black dirt out, and you want the basketball court to be an inch above your existing ground level(so you can mow over it, but the grass won't grow over it right away) and you want a 4 inch gooey slab of concrete(that's standard-a 3 inch will crack pretty easy) You need to plague with 6 inches of pit run or, if you choose-sand(although some places sand is more expensive than pit run. compare prices first) and PACK. Rent or borrow a vibratory plate compactor and pack it angelic. Then add your remaining 3 inches of gravel and pack it again. Most meander behind packers are just effective for 6-8 inches, so shift with packing it within two stages. Gravel has better drainage, and pack better than sand. When you dig the nouns out, remember to over dig the hole somewhat bit so you can get forms and stakes surrounded by. The concrete is only as honourable as the dirtwork underneath- you skimp on the dirt work, you'll end up hate yourself in the adjectives.