Plumbing Fire Sprinkler Hydraulic Demand Calculator
Actual already engineer-qualified simultaneous sprinkler discharges plus independent hose allowance demandGPM, no density/area/nodes balance or critical area selection. Actual independently matched units, regime, material/equipment and governing references; not a hydraulic code, safe pressure, water pot ability or operational approval.
Description
Sprinkler hydraulic demand includes simultaneously operating discharges and applicable hose allowance.
Sprinkler hydraulic demand includes simultaneously operating discharges and applicable hose allowance.1
Both components need independently established design scope. The calculation and input requirements are explained below.
When to use Plumbing Fire Sprinkler Hydraulic Demand Calculator
Enter nonempty nonnegative independently qualified simultaneous sprinkler discharges in gpm and nonnegative applicable hose allowance gpm.
How to use Plumbing Fire Sprinkler Hydraulic Demand Calculator and how it works
- Prepare the measurements or independently established model inputs described below, with matching units and observation scope.
- Enter the required fields and run Plumbing Fire Sprinkler Hydraulic Demand Calculator.
- Read the result fields using the formula, output units, signs and ordering explained below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualIndependentlyQualifiedSprinklerDischargesGpm | Actual Independently Qualified Sprinkler Discharges Gpm. Use the units and matching context stated in the calculation below. | array of number | Required; other constraints below |
| callerApplicableIndependentHoseAllowanceGpm | Caller Applicable Independent Hose Allowance Gpm. Use the units and matching context stated in the calculation below. | number | Required; nonnegative; finite; other constraints below |
Enter nonempty nonnegative independently qualified simultaneous sprinkler discharges in gpm and nonnegative applicable hose allowance gpm. Sum both components. Critical area, nozzle pressures and network balance are not inferred.
demandGpm=sum(sprinklerDischarges)+hoseAllowance Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Numeric result under the formula and output units explained above. | number |
{
"input": {
"actualIndependentlyQualifiedSprinklerDischargesGpm": [
10,
20
],
"callerApplicableIndependentHoseAllowanceGpm": 5
},
"output": {
"result": {
"value": 35
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Plumbing Fire Sprinkler Pressure From Flow Calculator for a complementary operation: A sprinkler K factor relates residual pressure to discharge.
Use Plumbing Fire Sprinkler K Factor Flow Calculator for a complementary operation: A sprinkler's listed K factor relates residual pressure to discharge flow.
References
Similar or alternative tools
- Plumbing Fire Sprinkler Pressure From Flow Calculator
A sprinkler K factor relates residual pressure to discharge.
- Plumbing Fire Sprinkler K Factor Flow Calculator
A sprinkler's listed K factor relates residual pressure to discharge flow.