🛡️ IMS Porous Caps (Porous HDPE 20-40 Micron Pores, Eliminating 12" Gravel Support)

Porous HDPE Underdrain Cap vs Gravel Calculator

Size factory-bonded porous high-density polyethylene underdrain bead caps (Leopold IMS / Roberts EnDisc): replace traditional 12-inch graded silica gravel support layers with a 1-inch thick 20-40 micron porous membrane cap, prevent gravel mounding upsets during air scour, increase usable media depth by 11 inches, and retrofitting yields.

1. Project & Operating Inputs

Filter Cells Upgraded (Cell Count e.g. 8 Municipal Sand Filter Cells)

Cell Floor Area (Sq Feet / Cell e.g. 450 Sq Ft per Filter Basin)

Customer Bid Price for Supplied IMS Porous Cap Retrofit ($)

Leopold IMS II Integral Media Support Caps, Precision Fasteners ($)

2. Financial Breakdown & Yield

GRAVEL-LESS POROUS CAPS

Turnkey Gravel Elimination & Media Expansion Profit

Water Treatment Plant Value Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost