🚰 VGB Act / ANSI 16 (Turnover 6-Hour Cycle, Drain Grate Velocity <1.5 FPS)

Pool Turnover Rate & VGB Drain Calculator

Size main suction drain grates, sump pots, and recirculation pump capacity for public pools under the Virginia Graeme Baker (VGB) Pool & Spa Safety Act & ANSI/APSP-16: calculate required flow rate (achieving mandatory 6-hour turnover period for standard pools / 2-hour for wading pools / 30-min for splash pads), verify drain face velocity (<1.5 FPS preventing body entrapment), and plumbing profits.

1. Project & Operating Inputs

Pool Total Volume (Gallons e.g. 240,000 Gallon Commercial Pool)

Mandated Turnover Period (Hours e.g. 6.0 Hour Turnover Standard)

Customer Bid Price for Supplied & Installed Dual VGB Drain Array ($)

Lawson VGB Suction Grates, Fiberglass Sump Pots, Diver & Plumber Labor ($)

2. Financial Breakdown & Yield

VGB ACT ANTI-ENTRAPMENT DRAINS

Turnkey Pool VGB Compliance Profit

Aquatic Plumbing Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost