fireflow

    / fire protection equations

Darcy-Weisbach

Head loss per foot =
  *  2 
2* 32.2 *  

Hazen-Williams

psi per foot =
4.52 *  1.85
 1.85 *  4.87

Fire Hydrant Flow Test

Flow =
29.83 *  *  2 * √

Flow Available at Interested Pressure

Available Flow =
 *   -    0.54
   Static psi - 

Expected Pitot Pressure

Pressure (psi)=

(29.83 *   * )2

Flow Velocity

Velocity =
 * 144
π *  2 * 7.48 * 60

Darcy-Weisbach

Head loss per meter =
  *  2 
2* 32.2 *  

Hazen-Williams

pascal per meter =
10.67 *  1.85
 1.85 *  4.87

Fire Hydrant Flow Test

Flow (L/min)=
.0666 *  *  2 * √

Flow Available at Interested Pressure

Available Flow =
 *   -    0.54
   Static psi - 

Expected Pitot Pressure

Pressure (kPa)=

(0.0666 *   * )2

Flow Velocity (m/s)

Velocity =
21.22 * 
 2