Other chickens walk around the bale browsing around the edges of the bale, and eating the alfalfa flakes that get scratched off onto the ground by the upper chickens. Alfalfa is a very nutritious food crop. Alfalfa sends it's roots deep into the soil.
Soil or Waste Stacks. A soil or waste stack (normally just called a stack) is a drainage pipe that passes through at least one story(floor to ceiling) as a drain pipe, this also includes any horizontal offsets. Every soil or waste stack will terminate in a stack vent that leads to outside air or a vent header.
Waste water systems encompass the system of drainage and pressure relief pipes within a building and terminate 0,5 m outside the external wall. Waste water systems are based on the primary pressure-relief system in which water and air-flow occurs in the same pipe. ground pipe is a horizontal pipe that collects drainage flows from connectors, collectors and down pipes and discharges them into the external sewer. The ground pipe remains inside the 0,5 m boundary of the internal sewer.