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hey yellow, I am seeing some things like this in my error logs, not sure if it is related to this at all

LONG QUERY (1767 characters long generated in /nas/wp/www/cluster-2294/kvr28/wp-content/plugins/simple-press/sp-api/sp-api-wpdb.php:166): SELECT  * FROM rufus_sfposts WHERE forum_id = 5851 AND topic_id=31829 AND post_content='I\'ve been wrestling with the notion of drainage for water that infiltrates the fill within the retaining walls. Hopefully with 80% clay soil, not much will enter, but if it does, I\'m concerned about it expanding the clay and increasing pressure (I will want to build strong), and about water becoming trapped at the bottom by the concrete slab.

xc2xa0

I viewed several digrams of draining water from fill behind a retaining wall. They all used gravity and piped it out the lower portion of the wall. Some had a slope they could drain to, and the rest drained to a sump well with a pump.

xc2xa0

Those won\'t work for this, especially not with water outside both retaining walls. I\'d be letting water in rather than draining it.

xc2xa0

So then I had the idea, what if I laid the slab over gravel bedding and the slab had lots of drain holes for the water to escape to the gravel bedding below? The only problem I can think of is that with clay soil under the gravel bedding, that over time the soil will break down and become increasingly resistant to seepage over time. (The very process that happens to the bottom of a mature clay bottom pond that helps it retain water better due to a lessening of losses to seepage.)

xc2xa0

I figured I could approach it one of two ways. Pour the slab and drill the holes once dry, or get something like bamboo tubes (biodegradable) and pour the concrete around them. Drilling risks hitting or exposing rebar/remesh, and with bamboo tubes sticking out, I don\'t know how to finish the surface with them in the way. (The bamboo tubes could be cut down and centers drilled once dry.)

xc2xa0

Thoughts?
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