Handbook of Civil Engineering Calculations

GPM

FIGURE 15. Pump characteristic curves for use in series installation.

Calculation Procedure:

1. Plot the characteristic curves for the pumps being
   considered
   Figure 16 shows the characteristic curves for the proposed pumps. Point 1 in Fig. 15 is the
   proposed operating head and flow rate. An alternative pump choice is shown at Point 2 in
   Fig. 15. If two of the smaller pumps requiring only 0.25 hp (0.19 kW) each are placed in
   series, they can generate the required 26-ft (7.9-m) head.

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