Reference data for fire-protection design

Hand-curated reference tables for sprinkler design: K-factors, EN 12845 and NFPA 13 density/area, ESFR pressures, Hazen-Williams C-factors and more.

• K-factor reference table (metric & imperial)
  EN 12845 / NFPA 13
• EN 12845 density / area-of-operation matrix
  EN 12845
• NFPA 13 density / area curves
  NFPA 13
• ESFR minimum design pressures by storage height
  NFPA 13
• Hose stream allowances — EN 12845 vs NFPA 13
  EN 12845 / NFPA 13
• Hazen-Williams C-factors for fire protection piping
  NFPA 13 / EN 12845
• Sprinkler temperature ratings & frame colors
  EN 12845 / NFPA 13
• Typical fire pump duty points by hazard class
  EN 12845
• Required water-supply duration by hazard
  EN 12845 / NFPA 13
• Storage height limits by sprinkler system type
  EN 12845 / NFPA 13
• Sprinkler clearance from obstructions (NFPA 13)
  NFPA 13
• Maximum sprinkler spacing & coverage area
  EN 12845 / NFPA 13
• Antifreeze concentration limits (NFPA 13)
  NFPA 13
• Backflow preventer pressure losses
  NFPA 13 / AWWA
• Fire pump test curve (churn / rated / 150%)
  NFPA 20
• Gaseous suppression — design concentrations
  NFPA 2001 / ISO 14520
• Detector spacing (heat, smoke, beam)
  NFPA 72 / EN 54
• Hydrant flow test interpretation
  NFPA 291