1. Hydrostatic pressure: The pressure at a certain point in the pipeline when the water in the fire water supply system is stationary.
2. Dynamic water pressure: the difference between the total pressure and the velocity pressure at a certain point in the pipe when water flows through the water supply system network. fire.
3. When the municipal water supply network is equipped with a municipal fire hydrant, its normal operating pressure must not be less than 0.14 MPa. In the event of a fire, the output flow of the municipal fire hydrant. , which is the least hydraulically favorable, should not be less than 15 L/s, and the water supply The soil pressure should not be less than 0.10 MPa.
4. In high-rise buildings, factories, warehouses and civil buildings with an interior clear height greater than 8 m, the dynamic pressureof the fire hydrant should not be less than 0.35 MPa, and the water column of the fire water gun should be calculated at 13 m. In other places, the dynamic pressure at the mouth of the fire hydrant should not be less than 0.25 MPa, and the filling water column of the fire water gun should be calculated as 10 m .