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Need Base for small slab

Posted by obrionusa (My Page) on
Wed, Sep 26, 12 at 7:35

I'm going to build a small slab about 10x20'. I was thinking of using #8 stone as a base. I'm trying to avoid renting a compactor. I dont think you have to compact #8. What do you think? The slab is going in my barn for my cattle to get out of the weather. Hopefull it would be easier to clean the manure out.

Follow-Up Postings:

RE: Need Base for small slab

All stone will need to be compacted prior to pouring a slab or you'll have that slab cracking in no time. As far as a slab being an easier way to clean out manure, sure, if you've got a bobcat. If you're still doing it by hand, then no, it won't be any easier at all. Remember you'll also have to provide a continual supply of shavings or straw as a bedding surface on top of the concrete or your animals will get scrapes and sores. That's an additional ongoing expense that you will be adding as well as the one time cost of the slab.

RE: Need Base for small slab

I would think a 4" base of stone over polyethylene would be
fine. You would also need some expansion joints every few feet.

RE: Need Base for small slab

In a slab an expansion/isolation joint separates the slab where it touches another structure.

A contraction/control joint weakens the top fourth of a slab so that a crack would occur there instead of randomly and are placed much farther apart than every few feet depending on the slab reinforcing and how the owner feels about cracks.

The crushed stone should be placed over undisturbed soil.

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