🚰 Block Underdrains (Leopold / Roberts Filter, Headloss <3.0" H2O, Air Scour 3-5 SCFM)

Water Filter Block Underdrain Lateral Calculator

Size high-density polyethylene dual-chamber filter underdrain blocks (Xylem Leopold Type S / Roberts Filter Aries): calculate primary and secondary compensating lateral orifice hydraulic distribution, guarantee uniform concurrent air scour (3 to 5 SCFM/Sq Ft) and water backwash distribution with total lateral headloss $<3.0 ext{" H}_2 ext{O}$, and water filtration yields.

1. Project & Operating Inputs

Filter Basin Area (Sq Feet e.g. 600 Sq Ft Granular Filter Cell)

Water Backwash Loading (GPM / Sq Ft e.g. 18.0 GPM/Sq Ft High-Rate Backwash)

Customer Bid Price for Supplied Underdrain Block Array ($)

Leopold Type S HDPE Blocks, Grout Anchors, Air Header Manifold ($)

2. Financial Breakdown & Yield

LEOPOLD UNDERDRAIN BLOCKS

Turnkey Filter Block Underdrain Package Profit

Municipal Water Filtration Infrastructure Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost