Fermented Feed I started thinking about using this idea to supplement the chickens winter feed. I bought a 40 lb. bag of hay cubes, about 2x 2 wide. While I didn't ferment mine, I soaked them in really hot water, for about 30 minutes. The first 2 times the girls just looked at it. After that, all gone! I guess they liked it. Another good reason to read lots of blogs.
Soil stack (in green) is connected to the sewer at the bottom and vented at the top, while each plumbing fixture has its own trap (shown in white) In modern plumbing, a drain-waste-vent (or DWV) is part of a system that removes sewage and greywater from a building, and regulates air pressure in the waste-system pipes to aid free flow. Waste is produced at fixtures such as toilets, sinks, and showers, and exits the fixtures through a trap, a dipped section of pipe that always contains water.
A soil vent pipe (SVP) or soil stack pipe can be just that, a pipe to vent the system however they would normally be utilised to carry foul waste from upper floor toilets, sinks, baths and showers down to the below ground drainage system..any internal soil vent pipes do not actually extend to above the roof line of a property, they finish in the roof space and have an air admittance valve fitted that allows air into the system when required but prevents smells and odours from venting within the property.