Engineering worksheets
Fire protection worksheets built around real job workflows
Worksheets connect calculators, lookup tables, QA gates, and saved records so the site supports complete engineering tasks instead of only isolated formula questions.
Worksheet systems
5
Connected engineering workflows
Linked tools
23
Calculators used inside worksheets
Reference basis
7
Lookup tables feeding inputs
Page role
Use this page for a defined task before moving to the next project record.
- Audience
- Project engineers, contractors, and reviewers working through a complete fire protection task.
- Job
- Connect inputs, calculators, reference data, QA gates, and records in the right order.
- Evidence
- Project criteria, drawings, device data, flow tests, selected reference rows, and AHJ notes.
- Output
- A retained worksheet package with linked calculator results and QA decisions.
- Next
- Open the worksheet matching the job, then follow its phase table before exporting records.
How worksheets differ from single calculators
- 1Start with the job intent: hydraulic design, battery and NAC review, water supply, pump selection, or hazard setup.
- 2Use the input matrix to confirm where each value comes from before opening linked calculators.
- 3Run phases in order and keep the QA gates and saved records with the calculation package.
Choose the worksheet record package
Start with the record package that matches the job evidence you already have and the QA gate you need to preserve.
| Record package | Use when | Evidence to collect | Primary QA gate | Open |
|---|---|---|---|---|
Hydraulic design NFPA 13 | Occupancy hazard or preliminary design criteria has been selected. | Hazard class, Design density, Remote area, K-factor | Hazard, density, area, and hose allowance have a documented source. | Open worksheet |
Battery and NAC NFPA 72 | Device current data, standby duration, alarm duration, circuit length, and conductor size are available. | Standby current, Alarm current, Standby and alarm duration, Appliance count | Current values are taken from current device listings, not generic assumptions. | Open worksheet |
Water supply NFPA 25 | Static pressure, residual pressure, test flow, pitot pressure, and outlet information are available. | Static pressure, Residual pressure, Required residual pressure, Test date and location | Static, residual, and flow values are from one test record. | Open worksheet |
Pump selection Engineering | Sprinkler demand, hose allowance, required pressure, elevation, and water supply data are available. | Sprinkler demand, Hose allowance, Required system pressure, Total head | Pump sizing starts from a documented sprinkler demand and pressure point. | Open worksheet |
Hazard and density NFPA 13 | Occupancy use, fuel load, storage, or process information is available. | Occupancy use, Room or area served, Hazard class, Design density | The hazard class is not presented as final where occupancy or storage is uncertain. | Open worksheet |
Worksheet library
Each worksheet is a professional workpaper route for a fire protection engineering task.
| Worksheet | Engineering task | Workflow coverage | Deliverable | Open |
|---|---|---|---|---|
NFPA 13 Hydraulic Design Worksheet NFPA 13 | NFPA 13 hydraulic calculation, sprinkler hydraulic worksheet, sprinkler system demand calculator | Establish design criteria, Check sprinkler discharge, Check pipe hydraulics, Assemble system demand | Design criteria worksheet | Open |
Fire Alarm Battery and NAC Worksheet NFPA 72 | fire alarm battery calculator NFPA 72, NAC voltage drop calculator, fire alarm voltage drop worksheet | Build load schedule, Size standby battery, Check NAC load and voltage | Battery capacity worksheet | Open |
Hydrant Flow and Water Supply Worksheet NFPA 25 | hydrant flow test calculator, available water supply calculator, NFPA 25 flow test calculation | Record hydrant test, Calculate available water, Prepare demand comparison | Hydrant flow test calculation | Open |
Fire Pump Selection Worksheet Engineering | fire pump sizing calculator, fire pump horsepower calculator, NPSH fire pump calculator | Import demand, Screen pump output, Review suction condition | Pump flow and discharge pressure screen | Open |
Hazard Classification and Density Setup Worksheet NFPA 13 | NFPA 13 hazard classification, sprinkler density area curve, occupancy hazard classification worksheet | Classify occupancy, Select density and area, Prepare sprinkler coverage | Occupancy and hazard basis | Open |