Pipe A'B' ... ... 288 108.0 54 21/2 12.00 0.69 3.3 2.21 section ... ... ... ... (from ... ... 24 38.0 8 2 7.5 0.16 1.4 0.22 diagram) B'C' ... ... 12 28.6 13 11/2 4.0 0.17 3.2 0.54 Diagram ... ... ... ... — ... ... 12 28.6 150 11/2 7.00 1.57 3.2 5.02 Hot water — C'D' ... ... 12 28.6 150 7.00 1.57 3.2 5.02 ... ... ... ... — ... ... — Piping C'F'b ... ... ... ... ... ... — ... .. D'E'b ... ... ... ... ... ... ... Total pipe friction losses K (hot) 7.99 — — — — — — — L Difference 1.37 — — — — — — — (Line J minus Line K) For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 psi = 6.895 kPa, 1 gpm = 3.785 L/m. a. To be considered as pressure gain for fixtures below main (to consider
Pipe section (from diagram) Diagram Hot water Piping A'B' ... ... ... ... ... ... ... ... B'C' ... ... ... ... ... ... ... ... C'D' ... ... ... ... ... ... ... ... C'F'b ... ... ... ... ... ... ... .. D'E'b ... ... ... ... ... ... ... 288 24 12 12 12 108.0 38.0 28.6 28.6 28.6 54 8 13 150 150 21/2 2 11/2 11/2 12.00 7.5 4.0 7.00 7.00 0.69 0.16 0.17 1.57 1.57 3.3 1.4 3.2 3.2 3.2 2.21 0.22 0.54 5.02 5.02 — — — — — K L Total pipe friction losses (hot) Difference (Line J minus Line K) — — — — — — — — — — — — 7.99 — — 1.37 For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 psi = 6.895 kPa, 1 gpm = 3.785 L/m. a. To be considered as pressure gain for fixtures below main (to consider