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Sky Dive City Drawing Date: 2/17/10 14:30 <br /> Page 3 <br /> FITTING NAME TABLE <br /> ABBREV. NAME <br /> C Coupling <br /> E 90' Standard Elbow <br /> F 45' Elbow <br /> S Straight Flow Thru Tee <br /> T 90' Flow Thru Tee <br /> ✓ Valve <br /> LEGEND <br /> HYD REF Hydraulic reference. Refer to accompanying flow diagram. <br /> K FACTOR Flow factor for open head or path where Flow (gpm) = K x - \/P <br /> Qa Flow added or subtracted <br /> Qt Total flow <br /> DIA Actual internal diameter of pipe <br /> C Hazen Williams pipe roughness factor <br /> Pf /ft Friction loss per foot of pipe <br /> PIPE Length of pipe <br /> FTNG'S Number of fittings. See table above. <br /> TOTAL Total length (PIPE + FTNG'S) <br /> Pt Total pressure (psi) at fitting <br /> Pe Pressure due to change in elevation <br /> where Pe = 0.433 x change in elevation <br /> Pf Friction loss (psi) to fitting <br /> where Pf = 1 x 4.52 x (Q /C) ^1.85 / ID ^4.87 <br /> Pv Velocity pressure (psi) <br /> where Pv = 0.001123 x Q ^2 /ID ^4 <br /> Pn Normal pressure (psi), where Pn = Pt - Pv <br /> NOTES: <br /> - Pressures are balanced to 0.01 psi. Pressures are listed to <br /> 0.1 psi. Addition may vary by 0.1 psi due to accumulation of <br /> round off. <br /> - Calculations conform to NFPA 13. <br /> - Velocity Pressures are not considered in these Calculations <br />