Water
Roof Catchment = 20’×32’ Annual Precip = 32”+ Annual Water = 1,706 ft3 or 12,761 gal Daily Water = 35 gal, 40 gal would be better
40 gpd
- 12 gpd flush + hand wash
- 2.5 gpd dishwasher
- 5.5 gpd laundry
- 20 gpd shower
Let’s do Evapotranspiration for Black water and septic for grey water
2 cubic metres of volume per person for zero discharge from toilet.
- Sizing- By practice, we observed that 2 cubic meters for each resident is enough to make the system work without overflowing. The shape of the basin is sizing: 2m width and depth of 1m. The length is equal to the number of usual residents home. For a house with five residents, the scale looks like this: (WxDxL) 2x1x5 = 10 m3
Don’t irrigate veggies with grey water - so no need to put it in greenhouse. A branched-drain much pit system to fruit trees for the thawed months could make sense.
Just for ref
Purdue Constructed Wetlands Factsheet Constructed Wetland Diagrams
Sewer pipe plan
Bathroom sink goes to toilet goes under 2nd story floor to greenhouse and drops down to evapotranspiration bed. “Overflow” from evt bed goes to septic tank. Shower and washing machine pipe drops down in northeast corner with a heat exchange. Then joins with kitchen sewer and drops down and goes outside to septic. Maybe add a branched drain mulch pits for summer use… or just mulch and plant the septic field lines.