Yesterday here was another whiteout with high winds, a good day to spend inside!
I cut out all the bench tops within the tunnel's length & practiced cutting a flat angular grade, this slope is 20 degrees (thanx Cooper for the clinometer app, sure comes in handy
).
From where the hoe sits now, digging down 10 inches will give me 62 inches from ground level to cement header and angle up 12 degrees from there... I have a few doorways in my house at this height, I'm use to ducking anyway. Plus to go down another 12 inches would add another 5 foot or more to the ramp length... more digging yes, but there'll be a big enough hole in that room as it is.
A quick vid of the process... swinging 90 at this slope, the sump ran dry & lost some oil out the vent hole.
https://www.youtube.com/watch?v=ofVNb8XazKU