🧰 Field Tools
Preliminary Calculation
Early demand & feasibility estimate — density/area, Hazen-Williams losses, backflow & a water-supply adequacy check.
Storage Hazard Analysis
NFPA storage commodity & protection-criteria analyzer — sprinkler demand, options table, and a one-tap PNG report.
Bid Estimator
Job-walk quick bid: enter the area, system & occupancy and get an estimated sprinkler count and price.
Supply Safety Margin
Supply pressure needed to hit a target margin — no guess-and-check.
Feet / Inch
Add, subtract & convert feet-inch-fraction measurements.
Sprinkler Spacing
Max coverage area & spacing from protection criteria.
Water Supply
Plot & read static/residual supply curves.
Vicinity Map
Address → plan-set vicinity map with Area of Work. Export PNG & DXF.
🚧 Under construction — come check it out!Hanger Detail
Draw pipe hanger details on your phone & export a clean PNG. Free account required — give the beta a try!
📚 Code & Study
Learn Hydraulic Calcs
A 6-level course on how sprinkler hydraulics really work — tree accumulation, discharge, friction, loop balancing, solver behavior & supply.
NFPA 13 References
Common sections across 2016–2025 editions.
NFPA 1142
Rural/suburban water-supply requirement.
Fire Sprinkler Study
Self-paced study questions — learn the standard, no timer.
🎮 Games
Sprinkler Siege
Tower-defense with a real hydraulic model — open K-factor heads, manage a sagging supply, grab special upgrades, and hold the line to the boss. Global leaderboard.
NFPA 13 Speed Round
Trivia game — beat the clock & climb the global leaderboard.
SprinkWord
Daily 5-letter fire sprinkler word puzzle. Keep your streak.
Pipe Dreams
Route sprinkler pipe from the riser to every head — a new procedurally generated plan each time. Least pipe wins.