Caleb Mayfield wrote:With the RMH operational I have started the process of massing. The soil we have here seems to be high clay for the top 18"-30" then it turns into mostly clay. Most fence posts are set no more than 32" for a good reason. I did a jar test on the location I plan to collect my dirt from. I dug and discarded the top 4" or so to get past the sod layer. I collected a sample from that soil then used a post hole digger to go down 30" where I hit the clay layer and took a sample there. I tamped some of that in around the manifold as is with no extra water and then added water and sculpted in more around the feed tube basically covering all the perlite. That material has shrunk a lot and cracked.
Would it be fine to let it dry, then patch the cracks, dry, patch, and so on until it stops cracking? (Just the area around the barrel and feed tube) Any specific reason not to? It's not structural and our long term thoughts are to add a decorative tile over it some day.
For the major fill of the bench, I plan to use as much rock as I can. We have two creeks on the property that will provide all the rocks we need. My question here is should I add sand to the clay soil if I'm rock loading the mix? None of it will be seen as it's in a box. The surface will be covered with appropriate blankets and cushioning.
The photos of the jars are taken after they sat for a generous 24+ hours.
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