Will the water pressure be greater if the outside vertical pipe is larger?
Not necessarily. The size of the water pressure is not determined by the caliber.The pressure of water. When a container holds water, it has a weight equal to that much because of the gravity of the water. It acts on the wall and underside of the vessel. The water held in the container has pressure on both the side and the bottom, and the pressure is always perpendicular to the contact surface in any direction. And at the same depth, the pressure is the same; the deeper the liquid, the greater the pressure.
The bottom of the tube sheet by the downward pressure in the cylinder is the weight of the water column, the upward pressure for the tube to remove the weight of the water, the two equal and opposite direction, then the cancellation and equal to zero, the flakes falling by gravity. If the glass tube is tilted, the result will be the same. That is, the pressure of the water is upward and the pressure acting on each side.
A thin plastic sheet is placed at one end of the glass tube opening at both ends, and the sheet is not falling when the opening is raised upwards and straight into the water. This is due to the upward force (upward pressure) of the water. The water is then pumped slowly into the glass tube, and the surface of the pipe is not close to the water outside the tube. The plastic sheet will not fall off. This proves that water has upward pressure and gives the sheet a supportive force. Continue to add water to the inside and outside of the pipe, usually, the pressure of the water column downward is equal to the upward pressure of the sheet outside the pipe, and falls because of the weight of the plastic sheet itself.
Because the water pipe is not a pressure pipe, it is very easy to mend.1, according to the size of the gap (hole) to do a hoop, hoop is larger than the gap (hole) 2~3 cm can;2, looking for a thickness of more than 1 millimeters of rubber board (bicycle tube can), cut a piece than crack (hole), the surrounding big 1 centimeters can;3. The hoop is sheathed on the sewer pipe, and the rubber plate is placed in the gap (hole) between the hoop and the pipe gap;4, check the rubber plate position is correct, the hoop with bolts fastening on the OK.This method is applied to the repair of non pressure pipes of various materials. Hey, this is the unique! That's what the emergency management does!
