Total 6.0 Press. Available = T.E.L. = Total x le 60.15 (7,625-19.6) =  – = 6.0 x 0.7 72.125 kPa = 4.2 m D 0.3 22 4.0 1No. Angle valve bath tap = 5.0 4.0 + 3.5 = 0.625 4,69 kPa 4.69 kPa Static pressure = 22* add T.E.L. = Total  x le 7.5 m pump or 1m x 9.810 = 9.81 = 5.0 x 0.7 raise the = 3.5 m Press. Available = cistern 32.79 ( 4,69 + 9.81)= – 1m 18.29 kPa above or use circular tank with 2m height 0.3 22 3.0 1No. Angle valve bath tap = 5.0 3.0 + 3.5 = 625 4,063 4,063 Static pressure = E 24 T.E.L. = Total x le 6.5 m 6m x 9810 = 58,860  = 5.0 x 0.7 Press. Available = = 3.5 m 58,860 14,683 = – 44,177 Pa 4,063 = – 40,114 Pa Re-calculate pipe ref. C for 15mm pipe C 0.3 15 7.0 1No. 28 x 15 x 22 tee (already 7.0 + 3.47 4000 41,880 41,880 + Static pressure = 15 included) = 10.47 m 14,683 = 9 m x 9810 = 88,290 estimated with 2 No.28 x 15 reducers: 56,563 Press. Available = A2 / A1 = x 0.00752 / x   88,290 56,563 = – 0.0142. 31,727 Pa = 0.287 gives = 0.47  2No. Reducers = 0.94 1No.Bend = 1.0 1No. Angle valve bath tap = 5.0 ----------- Total 6.94 T.E.L. = Total x le  = 6.94 x 0.5 = 3.47 m
Total 6.0 T.E.L. = Total  x le = 6.0 x 0.7 = 4.2 m Press. Available = 60.15 – (7,625-19.6) = 72.125 kPa D 0.3 22 4.0 1No. Angle valve bath tap = 5.0 T.E.L. = Total  x le = 5.0 x 0.7 = 3.5 m 4.0 + 3.5 = 7.5 m 0.625 4,69 kPa 4.69 kPa Static pressure = 1m x 9.810 = 9.81 Press. Available = 32.79 – ( 4,69 + 9.81)= 18.29 kPa 22* add pump or raise the cistern 1m above or use circular tank with 2m height E 0.3 22 3.0 1No. Angle valve bath tap = 5.0 T.E.L. = Total  x le = 5.0 x 0.7 = 3.5 m 3.0 + 3.5 = 6.5 m 625 4,063 4,063 Static pressure = 6m x 9810 = 58,860 Press. Available = 58,860 – 14,683 = 44,177 Pa – 4,063 = 40,114 Pa 24 Re-calculate pipe ref. C for 15mm pipe C 0.3 15 7.0 1No. 28 x 15 x 22 tee (already included) with 2 No.28 x 15 reducers: A2 / A1 =  x 0.00752 /  x 0.0142. = 0.287 gives  = 0.47 2No. Reducers = 0.94 1No.Bend = 1.0 1No. Angle valve bath tap = 5.0 ----------- Total 6.94 T.E.L. = Total  x le = 6.94 x 0.5 = 3.47 m 7.0 + 3.47 = 10.47 m 4000 estimated 41,880 41,880 + 14,683 = 56,563 Static pressure = 9 m x 9810 = 88,290 Press. Available = 88,290 – 56,563 = 31,727 Pa 15
3-pipe-sizing-2013-3.docx