🪨 IEEE 80 Surface Rock (4" to 6" Layer [3,000 Ω-m Wet], Reflection Factor C_s)

Substation Surface Crushed Rock Calculator

Size high-resistivity surface insulating gravel layers inside high-voltage electrical substation yards under IEEE 80 Section 12.5: calculate foot resistance reduction factor (C_s based on 4" to 6" of clean washed crushed granite/basalt possessing >3,000 ohm-meters wet resistivity), reduce dangerous touch/step voltages, and civil substation contracting profits.

1. Project & Operating Inputs

Substation Yard Surface Area (Square Feet e.g. 45,000 Sq Ft Substation)

Crushed Rock Layer Thickness (Inches e.g. 6.0" Washed Granite Layer)

Customer Bid Price for Supplied, Spread & Compacted Rock ($ / Sq Ft)

ASTM No. 57 Washed Granite, Non-Woven Geotextile Fabric & Equipment ($)

2. Financial Breakdown & Yield

IEEE 80 CRUSHED ROCK INSULATION

Turnkey Substation Yard Surface Profit

Civil Substation Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost