Questions and Answers for Redi Base 8 in. x 24 in. Disposable Plastic Footing for In-Ground Concrete Column

A:  Thank you, Pedro, for your recent inquiry with The Home Depot. We apologize, we currently only offer the Redi Base 8 in. x 24 in. Disposable Plastic Footing for In-Ground Concrete Column (204622716). We appreciate your business and look forward to serving you in the future.

A:  I'll answer my own question. ID at the base is 22.5". Attached is a sketch of the dimensions I measured.

A:  I think they mean disposable in the sense that you use them once and leave them in the ground. They are not "reusable", they are "disposable".

A:  Disposable would not be how I would describe it. I would call it a consumable. It goes at the bottom of a large hole. A sonotube pokes thru it up to the footing hieght. It can then be backfilled with dirt, rebarred, inspected and poured. It allows for a very large footprint without having to fill a massive hole with concrete. 

A:  No, leave it underground. Look at this comparable system; https://www.youtube.com/watch?v=lOKmjUz1Jj4

A:  In the description of the product, "One size Redi Base fits 8 in., 10 in. and 12 in. Dia tubes"

A:  Hi Cementhead, we do not offer any other sizes of the 8 in. x 24 in. Disposable Plastic Footing for In-Ground Concrete Column on Homedepot.com. Thanks for shopping Home Depot!

A:  The 24" base I used which is the smallest will take a 8",10" or 12" tube.

A:  This works for 12” tube. Also, burying the post in the concrete isn’t the preferred method for posts these days.

A:  This is supposed to work with a 12" tube but you need to trim off half of the tabs and it does not give good results.

A:  Yes but at least you can use a 12" tube and keep your posts out of the ground.

A:  It will work, but remember they are 24" in diameter - that's a lot of digging, because YES you need to go down below frost line (otherwise they will heave). Also that is a lot of concrete! This base itself takes 2 cubic feet of concrete!

A:  Yes the ideal distance would be for these to be 6- 8" below the 48" frost line on undisturbed soil. For drainage it can be on 3-4" of compacted undisturbed soil but below the frost line.

A:  Kind of overkill, just dig a post hole sixe whole and pour in concrete. Make a bigger whole for corner posts and gates.

A:  These need to be set below the frost line.

A:  Yes, these need to be set as deep as straight columns.

A:  Need to be set on undisturbed soil like any other structural concrete, and, below the frost line. These factors are different depending where you live obviously. Where I am frost line is 12", in some Eastern states it's 48"! Hope that helps!

A:  Yes, they need to go below the frost line in your area.

A:  It takes 2 cubic feet of concrete to fill one of these, plus the height of the tube form. There is a concrete calculator on their website: https://www.redibase-form.com/technical.html

A:  Per the description, the base requires 2 cubic feet of concrete. A 60lb bag of Quickrete Mix makes approximately .45 cu feet of concrete. So, just under 4.5 bags.

A:  Around 3 bags

A:  You can also use the 80 lbs. bag which yields about .6 cubic feet of concrete which will cut down the amount of bags