Ground Verification

The Foundation of Accurate Stockpile Measurement

Without a verified Original Ground Level (OGL), every volume calculation carries inherent error. We create and maintain accurate ground baselines - the essential first step for reliable stockpile measurement.

Get OGL Survey Quote Why OGL Matters
OGL APEX HEIGHT VOLUME ACCURACY ±1-2%

Stocks Already Present on Your Site?

Don't worry - ask us how. We have methodologies to establish accurate ground references even when stockpiles are already in place. It's more complex, but achievable with the right approach.

Talk to Our Experts

The Problem We Solve

See how missed base stock leads to measurement errors

Ground Verification Comparison - Without vs With OGL

Why OGL Matters

The ground beneath your stockpile is rarely flat. Ignoring this creates measurement errors.

Without Verified OGL

  • Assumed flat ground that doesn't exist
  • Undulations and slopes ignored
  • Volume calculations off by 5-15%
  • Disputes during audits and handovers
  • No baseline for future measurements
  • Carpet stock accumulates undetected

With Verified OGL

  • Actual ground surface mapped in detail
  • Every contour and variation captured
  • ±1-2% volumetric accuracy achieved
  • Audit-ready documentation
  • Consistent baseline for all future surveys
  • No hidden material surprises

How Ground Verification Works

Creating a reliable OGL baseline for your stockyard

1

Grid Survey

We establish a systematic grid across your stockyard area, capturing elevation data at regular intervals.

2

Surface Modelling

Data points are processed to create a detailed 3D surface model representing the true ground level.

3

Baseline Established

Your verified OGL is documented and stored as the permanent reference for all future volume calculations.

Ground Verification vs Carpet Stock

Two related services with different purposes

Ground Verification
Carpet Stock Verification
Purpose
Create OGL baseline for future measurements
Find hidden material on unknown ground
When to Use
Before stockpiles are placed (proactive)
When stockpiles already exist (reactive)
Outcome
Verified ground reference surface
Volume of accumulated carpet stock
Complexity
Standard survey methodology
More complex - requires clearing or estimation
Best For
New stockyards, yard expansions, handovers
Existing yards with SAP variance issues

Not sure which you need? Contact us - we'll assess your situation and recommend the right approach.

Benefits of Verified OGL

Why leading companies invest in ground verification

Higher Accuracy

±1-2% volumetric accuracy vs 5-15% error with assumed ground

Audit Compliance

Documented baseline that satisfies statutory and internal auditors

Consistent Reference

Same baseline used for all surveys - comparable results over time

No Surprises

Prevent carpet stock accumulation from day one

Dispute Prevention

Clear baseline prevents arguments during handovers and audits

Future-Ready

OGL baseline maintained and updated as your yard evolves

OGL Maintenance

Ground conditions change. Vehicles compact soil. Drainage alters surfaces. We offer ongoing OGL maintenance to keep your baseline accurate.

  • Periodic Re-verification

    Scheduled surveys to detect ground level changes

  • Post-Clearing Updates

    Re-survey after stockpile removal to update OGL

  • Expansion Coverage

    Extend OGL to new areas as your yard grows

  • Version Control

    Historical OGL records maintained for audit trail

Original Ground Level OGL Surface Model

Industries We Serve

Ground verification for material storage facilities

Coal

Pitheads, washeries & power plant coal yards

Iron Ore

Mining stockyards & beneficiation plants

Cement

Limestone & raw material storage areas

Ports & Terminals

Bulk cargo storage yards

Need Ground Verification or OGL Mapping?

Get a verified baseline for accurate stockpile measurement. Free site assessment.