NFPA in USA

Workflows

Technical calculation workflows

Guides here support calculator use, formula setup, and field verification.

Page role

Use this page for a defined task before moving to the next project record.

Audience
Users who know the task but need the calculation sequence before opening tools.
Job
Turn a field or design question into ordered calculator steps.
Evidence
Project condition, required inputs, linked worksheet, and related calculator outputs.
Output
A workflow checklist that routes the user into calculators and worksheets.
Next
Open the guide, then start the linked worksheet or calculator named in the guide handoff.

Choose the work procedure

Start with the procedure that matches the project question, then open the worksheet and first calculator listed in that row.

ProcedureStart whenStart worksheetFirst calculatorOpen

NFPA 13 Hydraulic Calculation Workflow

NFPA 13

Occupancy hazard, design density, design area, remote area, and hose allowance basis.NFPA 13 Hydraulic Design WorksheetNFPA 13 Density and Area Demand CalculatorOpen procedure

NFPA 72 Battery Sizing Workflow

NFPA 72

Listed standby current and alarm current source for each panel, device group, or power supply.Fire Alarm Battery and NAC WorksheetFire Alarm Battery Capacity CalculatorOpen procedure

Fire Pump Sizing Workflow

Engineering

Sprinkler demand, hose allowance, required system pressure, and elevation basis imported from hydraulic review.Fire Pump Selection WorksheetFire Pump Rated Flow and Pressure CalculatorOpen procedure

Water Supply Analysis Workflow

NFPA 25

Hydrant test date, location, static pressure, residual pressure, outlet diameter, and pitot reading.Hydrant Flow and Water Supply WorksheetHydrant Flow Test CalculatorOpen procedure

Sprinkler System Type Selection Workflow

NFPA 13

Ambient temperature, freeze exposure, occupancy, hazard, and operational risk basis.Hazard Classification and Density Setup WorksheetOccupancy Hazard Classifier CalculatorOpen procedure

Workflow guides

WorkflowCalculation purposeTool linksOpen

NFPA 13 Hydraulic Calculation Workflow

NFPA 13

A tool-first workflow for setting up sprinkler density, remote area, K-factor, friction loss, elevation, and system demand checks.2 worksheets / 3 calculatorsOpen

NFPA 72 Battery Sizing Workflow

NFPA 72

A practical calculation sequence for standby load, alarm load, aging margin, and standard battery size selection.1 worksheets / 2 calculatorsOpen

Fire Pump Sizing Workflow

Engineering

Screen fire pump flow, pressure, elevation, and horsepower before detailed pump selection and curve review.2 worksheets / 3 calculatorsOpen

Water Supply Analysis Workflow

NFPA 25

Use hydrant test readings to estimate available flow, compare demand, and document preliminary water supply margins.1 worksheets / 2 calculatorsOpen

Sprinkler System Type Selection Workflow

NFPA 13

Compare wet, dry, preaction, and deluge system considerations before setting up preliminary calculations.2 worksheets / 2 calculatorsOpen