The video is about building a model house and explaining the plumbing system. The hosts are using a 3D printer to create miniature objects such as a water tank, kitchen sink, and toilet. They explain how the water supply works, including the water tank, pipes, and valves. They also demonstrate how the sewage system works, including the use of a siphon to prevent sewer smells from entering the house.
The hosts then test their plumbing system by simulating water flow from the water tank to the faucets and toilets. They encounter some leaks and use various methods to fix them. They also test the sewage system by sending "poop" (made of paper and then replaced with a solid object) through the pipes to see if it reaches the sewage box.
The video is part of a series, and the hosts mention that they will be covering the electrical system in the next video. They also mention that they built the masonry for the house in a previous video, which is worth watching.
Here are the key facts extracted from the text:
1. The project is building a little house from scratch using cement and concrete blocks.
2. The house was made with foundations, reinforced concrete, pillars, and beams.
3. The project is being continued after a year due to popular demand.
4. There will be four episodes to explain the details of completing the house.
5. The first episode covers the hydraulics of the house.
6. The water supply to the house is divided into two circuits: one for incoming water and one for outgoing water.
7. The incoming water is stored in a water tank, which serves as a reservoir in case of a shortage.
8. The water tank is usually placed in a high location to maintain water pressure.
9. The plumbing system uses PVC pipes, which come in different sizes and colors.
10. The thinner pipes are used for incoming water, while the thicker pipes are used for outgoing water.
11. The plumbing system has a siphon that prevents sewer smells from entering the house.
12. The siphon is a curved pipe under the sink that traps a small amount of water, preventing sewer gases from rising.
13. The house has two water lines: one for cold water and one for hot water (not used in this project).
14. The plumbing system has a grease trap to filter out fat and other debris from the wastewater.
15. The wastewater is divided into two types: gray water (from sinks and washing machines) and black water (from toilets).
16. The project uses 3D-printed objects to simulate plumbing fixtures, such as sinks and toilets.
17. The plumbing system is tested using a simulated water supply and a leak is detected.
18. The leak is fixed using modeling clay, caulk, and super glue with baking soda.
19. The plumbing system is complete, and the water flows through the faucets, toilet, and shower.
20. The wastewater is collected in a box and flows to the street sewer.
21. The project uses a 3D printer to create furniture, which is temporarily placed in the house for testing purposes.
22. The floor of the house is not yet complete, and the furniture is floating on the floor.
23. The project will continue with the electrical part in the next video.