📐 Bore Entry Angles (8°-15° Pitch) & Overbend Pipe String Support Rollers

HDD Setback Distance & Overbend Calculator

Calculate launch rig setback distances and pipe string tailing layout geometry for HDD projects: calculate surface entry pit setback distance (Feet = Target Depth / tan(Entry Angle)), determine pipe string break-over roller support height and radius preventing plastic overbend buckling during pullback, and trenchless site engineering profits.

1. Project & Operating Inputs

Target Bore Invert Depth (Feet e.g. 35.0 ft Deep Invert)

Drill Rig Entry Angle (Degrees e.g. 12.0° Standard Entry Pitch)

Customer Bid Price for Site Prep, Staging & Excavation ($)

Track Excavator, Entry/Exit Slurry Containment Pits, Pipe Rollers ($)

2. Financial Breakdown & Yield

HDD LAUNCH PIT SETBACK GEOMETRY

Turnkey Site Layout & Staging Profit

Trenchless Civil Engineering Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost