First, we decided to relocate the cement tiles to the southwest corner of the building pad. That is the lowest corner and sets the 4" (100mm) drain entry level almost 19" (490mm) deeper into the ground. It also places the entire drainage station closer to the field for more efficient water movement.
After that, I marked out the footer locations and dug those out. The building will be heated and I will also run some PEX around the perimeter to keep the cement from freezing, so the footers will not need to extend below the frost line.
And finally, I dug out the utility trenches before returning the machine. (The yard is now a complete mess again).
Once we got that all taken care of, we ran the water, sewer and electrical lines before back filling some of the trenches to keep those lines in place. We also ran the lines for the ground water drainage system and installed the perforated drain pipe in the footer in case the next set of rain showers proved to be more than forecasted.
I did manage to get the second pump hooked up and running, so now all the water is being diverted to a short section of 3" (75mm) perforated pipe sitting on a thick layer of river rock. That will handle the drainage most of the time, but when it gets flooded during a rain storm, the pipe simply extends out to the field and will exit above ground there.
Next on the list is to back fill the trenches and clear the dirt from around the building perimeter so we can frame up the forms for the cement pad.
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