Enter flow, length, fittings and prices to see velocity, head loss, pumping energy and total yearly cost for each commercial size, and the payback of upsizing.
Pre-sizing and estimating tool: results do not replace design, calculations or reports signed by a licensed professional, nor verification against the applicable codes and standards.
Investment annualized at the MARR and service life plus pumping energy. The shortest bar is the economic size.
Usual range for water in discharge lines: 3 to 10 ft/s (1 to 3 m/s).
Cash flow of the improvement: investment in year 0 and annual savings escalated at the rate entered, discounted at the MARR.
The report gathers this page's inputs, results, equations, assumptions and references, with fields for project, engineer and revision. In the print dialog, choose Save as PDF.
The size with the lowest total cost over the line’s life: bigger pipe costs more to buy and install but uses less pumping energy. The calculator adds both costs per year for each commercial size.
Discharge lines are usually sized for 3 to 10 ft/s (1 to 3 m/s). Below that the line tends to be oversized; above it, head loss, noise, erosion and water-hammer risk grow.
Add each fitting’s coefficient: long-radius 90° elbows about 0.3, open gate valves 0.15, check valves 2, tank entrance 0.5 and exit 1. Crane TP-410 lists values by type and size.
Important notice: Indus Metrics tools produce estimates and pre-sizing results from the data you enter and from published engineering methods. They do not replace design, calculations or reports signed by a licensed professional engineer (PE), nor verification against the applicable codes, standards and regulations, such as OSHA rules and the ASME codes. Material and fuel properties vary: check manufacturer data or your own process analyses before deciding. By using this site you agree to the Terms of Use.
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