💧 ASHRAE/ASPE Hunter Curve WSFU to GPM, Triplex 70/70 VFD Boosters Total Head Ft

Triplex Commercial Water Booster Pump Calculator

Size multi-stage variable speed vertical booster pump packages for high-rise commercial buildings under ASPE Plumbing Engineering Design Handbook: convert Water Supply Fixture Units (WSFU) into peak design flow (GPM using modified Hunter curves), calculate Total Dynamic Head (TDH ft based on static elevation, residual 35 PSI fixture pressure, and friction loss), and plumbing margins.

1. Project & Operating Inputs

Total Building Water Supply Fixture Units (WSFU e.g. 1,450 WSFU)

Building Vertical Height (Feet e.g. 240 ft Tall / 20 Stories)

Customer Bid Price for Supplied & Piped Triplex VFD Booster Skid ($)

Triplex SS Multi-Stage Pumps, VFD Panels, Pressure Sensors & Labor ($)

2. Financial Breakdown & Yield

ASPE HUNTER CURVE BOOSTER PUMP

Turnkey Booster Skid Profit

Commercial Plumbing Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost