Job Info
GPD = bedrooms × 150 (300 min). Min area = GPD ÷ HLR.
System Sizing
Gallons Per Day—
Septic Tank Size—
Min. Absorption Area—
Deep Wall Take-Off
Conventional Take-Off
30% chamber credit shortens trench length dug; gravel volume is figured on the full run (8" deep + 6" cover).
Include in Output
Loads figured at 17 tons. Tons = yards × 1.5, plus 10% waste. Verify against site conditions.