From the Flout dosing tank.
Into our new d-box
Then into the perfectly balanced raised bed gravel.
Tag Archives: gravel
Installing the curtain drain
This drainage trench will help to keep the gravel dry in the raised bed septic system. It will catch and divert water from the house site so it runs away from the septic field. 
The trench is drained by perforated pipe bedded in stone. The clay soil makes drainage more of a challenge than anyone expected.
Installing the septic gravel
Our soil does not pass the perk test with its very high clay content. We needed to haul in 36 truck loads of gravel that drains adequately and will support our septic distribution.
Each load is distributed by Ted on his dozer.
The almost finished raised bed septic field along the front of our hay field. The slightly darker material towards the back is the imported gravel.
Finished Swale
Tamped stone
Forms with rebar ready to fill
The formular 400 (pink XPS) has a compression strength of 40 PSI. The footing will be insulated from ground contact and thermal bridging to the soil.