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smorehouse smorehouse
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6 years ago
What is the procedure for determining fire flow using the graphical analysis method?
 
  What will be an ideal response?
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6 years ago
Determine which gpm (L/min) scale should be used.
Locate and plot static pressure on vertical scale at 0 gpm (0 L/min).
Locate total water flow measured during test on chart.
Locate residual pressure noted during test on chart.
Plot residual pressure above total water flow measured.
Draw straight line from static pressure point through residual pressure point on water-flow scale.
Read gpm (L/min) available at 20 psi (140 kPa) and record the figure; this reading represents total available water.
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