Shovelhead
I used a 35' tape measure along the terrain, so this may not be exactly accurate, but figure 140-145 feet. The tightest corner was right at the exterior wall -- two 45° angles about 3-4' apart formed a right-hand turn. It was a fairly straight, slightly curving run to the septic tank. The line had a 45° angle as it passed through the wall of the tank.
While my GC was able to get the proper drop along the run for a simple gravity feed, I may ultimately end up with a grinder pump. The last 30-40 feet is a close thing.
My research showed there are 2 sizes pump -- prolly more but these would have worked:
A 1/2 HP pump was $700.
A 1 HP pump was $1,300.
Add in a hole for the pump and power for the pump motor / alarm and I was expecting $2000 all in.
The 1 HP pump dimensions: 24" tall cylinder that was 24" in diameter. I didn't get the dimensions for the smaller pump but figure it was about the same.
I can't speak for your neck of the woods, but Colorado Code says a septic line needs a 2% drop. The plastic line I used came in 10' sections. 10 feet = 120 inches. 2% of 120" = 2.4" sooo 2 1/2 inch drop every ten feet was an easy measure check.
Shovelhead - I have been planning this build since 2006/07 timeframe pretty much a full time effort. Please ask any questions -- I likely have wrestled with most issues by now.
Craig
PS - if you have water into/outside your shop, check out
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