#Hass fire sprinkler calculation code

just run a demand calc back to the point where you are going to place the pump. 20 psi end pressure isn't hard to achieve through large enough underground pipe where friction loss is minimal.Р”В®dit: To be clear, you are trying to size the pump yourself, correct? If so, then don't stick anything in for the Static, Residual, or Flow yet. If your total demand is 3,000 gpm you could cover that with a 2,000 gpm or 2,500 gpm pump depending on the pump curve. Remember that fire pumps must be able to operate at at least 150% of their rated capacity (at at least 65% of their rated pressure). If the well is that far below ground you'll need a vertical turbine pump up top, or you'll need to build the pump house down below grade to take suction from the side of the well (at whatever depth it will take to get your required volume).Р”Р€,000 gpm pump is likely overkill. If it's a municipal water supply or some other supply coming from somewhere else, you'll need to flow test that supply to determine with the static, residual, and flow numbers should be. if you have a 2000 GPM pump it'll be good for up to 3000 GPM, and whatever the pump curve dictates is what you will have pressure wise at any given point on the curve (+ the tank elevation pressure). Residual pressure is going to be whatever your pump provides at a given flow + the elevation pressure from the tank (remember to account for high level for maximum pressure expected, and low level for minimum pressure expected). If it doesn't give you a pressure, I'd personally go with 20 psi the hydrant outlet, which should be sufficient.Р”Р€.) What is the water source? Is it a tank? Is it the municipality? If it's just a gravity tank, then static pressure is just going to be your pump churn pressure (rated pressure * churn percentage + static pressure from tank ). you just need flooded suction at the pumper truck really. sorry), it may just be anything positive like a fire pump.

#Hass fire sprinkler calculation code

I don't even know if you'll see a minimum pressure in the code (I don't do many private hydrant systems. the pumper truck is going to boost whatever water they get from the hydrant. as long as you can get flow to a hydrant at a positive pressure, you're going to be ok. One thing to keep in mind is that for hydrants the flow is going to be more important than the pressure. If you have any 2 pieces of information, you can figure out the third easily.Р”Сћ) You'll need to determine the required fire flow per IFC (or whatever Fire Code is in effect), which will likely also tell you what pressure is required. If you know what your flow and pressure requirements are at that point, you can determine your K-Factor off of them. 1) Remember that k-factor is a function of flow and pressure.