Construction equipment can place loads on buried infrastructure far greater than normal service conditions. The NCSPA’s Tracked Vehicle Load Calculator helps engineers, DOT professionals, contractors, and drainage designers estimate minimum cover depth requirements and maximum allowable track pressure for corrugated steel pipe (CSP) and Spiral Rib Pipe subjected to tracked construction vehicles.
Use the calculator below to evaluate tracked vehicle loading, track width, pipe diameter range, and minimum soil cover requirements based on The NCSPA published design methodology for temporary construction loading conditions.
Tracked Vehicle Cover & Pressure Calculator
Use this tool to reference maximum allowable track pressure values or enter a vehicle track pressure to estimate the minimum cover depth required for corrugated steel pipe.
Purpose
Construction loads frequently exceed the service loads buried structures were designed to carry. Corrugated steel pipe can generally support heavy construction equipment when loads are distributed through compacted ground until the forces can be safely carried by the pipe.
Design Methodology
This lookup is based on The NCSPA design data sheet methodology, which relates tracked vehicle loading to an equivalent wheel load system and uses the published design tables for quick reference.
Calculator Inputs
How the Tracked Vehicle Load Calculator Works
The calculator uses The NCSPA’s published design methodology to relate tracked vehicle loading to an equivalent wheel load system. Users can select pipe type, diameter range, and tracked vehicle width to determine allowable loading conditions and estimate the minimum cover depth required.
Why Minimum Cover Matters for Corrugated Steel Pipe
During construction, improperly managed heavy equipment loading can overstress buried pipe systems before final embankment conditions are achieved. Adequate soil cover helps distribute loads through compacted backfill so forces are transferred safely to the surrounding soil structure and pipe.
Typical Applications
- Highway and DOT drainage construction
- Temporary construction crossings
- Utility and stormwater installation projects
- Heavy tracked equipment over buried CSP
- Construction staging areas near drainage infrastructure