Legal Terms & Technical Disclaimer

Terms of Service

Please review these terms before using Rock Coverage Calculator. All calculation models provide planning estimates based on nominal loose stockpile densities.

Agreement Type:Terms of Use & Estimation Disclaimer
Effective Date:January 2026
Last Updated:September 2026
Governing Standards:ASTM C29 / AASHTO T 19
Planning Tool
Calculation Purpose
Outputs are theoretical planning estimates, not guaranteed bid commitments
Quarry Scales
Final Billing
Material billing is strictly governed by certified quarry weigh-scale tickets
Field Verification
Contractor Duty
Contractors must verify subgrade depth, moisture, and compaction loss
Important Geotechnical Notice

Material Calculations are Planning Estimates

Aggregates are natural mined geological products. Bulk densities vary between regional quarries, individual rock veins, moisture contents (3% to 12%), and mechanical compaction levels (15% to 20% volume reduction for dense-graded subbases). Always confirm certified weight-to-volume conversion factors with your local aggregate supplier before ordering.

1. Acceptance of Terms

By accessing or using Rock Coverage Calculator (rockcoveragecalculator.com), you agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use this website.

2. Permitted Use & Commercial Project Planning

You are granted a non-exclusive, revocable, royalty-free license to use our calculation engines, visualizers, spec-sheet generators, and exported CSV data for personal, commercial, educational, and contracting purposes. You may use our outputs in client bids, material purchase orders, and project planning sheets.

You may not scrape our tools via automated bots, reverse engineer proprietary visualizer code, or republish our calculation logic without proper attribution.

3. Geotechnical Estimation Disclaimer (Quarry & Scale Variance)

Every mathematical formula on this website is calibrated against recognized industry standards, including ASTM C29/C29M (Bulk Density of Aggregate) and AASHTO M43 / ASTM D448. However, actual jobsite yields will inevitably fluctuate based on real-world field conditions:

  • Regional Geologic Density: Basalt and trap rock naturally weigh more (up to 2,900+ lbs/cu yd) than limestone (2,700 lbs/cu yd) or volcanic scoria/lava rock (1,450 lbs/cu yd).
  • Moisture Content: Uncovered quarry stockpiles absorb rain and groundwater. Damp gravel may register 5% to 10% heavier on commercial weigh-scale tickets without occupying any additional volume.
  • Compaction & Consolidation: Crusher run, quarry process (QP), and 21-A base gravel contain mineral fines that nest into void spaces when compacted with vibratory plates or heavy rollers. A 4-inch loose lift typically compacts down to approximately 3.2 inches (requiring approximately 25% additional loose quarry volume to reach the target finished grade).
  • Subgrade Unevenness & Bed Prep: Natural soil subgrades are never laser-flat. Minor undulations of 0.5 inches across a large area can increase required aggregate volume by 10% or more.

4. Contractor & Estimator Responsibility

Users—including landscape contractors, earthmoving estimators, civil engineers, and property owners—are solely responsible for verifying site measurements and confirming scale weights with the supplying aggregate quarry.

Rock Coverage Calculator is not responsible for under-orders, over-orders, short-load delivery surcharges, standby trucking fees, project delays, or structural settling.

5. Limitation of Liability

To the maximum extent permitted by applicable law, Rock Coverage Calculator, its publishers, operators, and contributors shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising out of the use of, or inability to use, our calculations, formulas, software tools, or published documentation.

6. Intellectual Property Rights

The layout, design, graphics, custom interactive SVG/Three.js visualizers, and original editorial content on rockcoveragecalculator.com are protected by applicable copyright and trademark laws. You may freely print, download, and distribute calculation sheets generated through our platform for your specific construction projects.

7. Changes to Terms

We reserve the right to revise or update these Terms of Service at any time. Changes take effect immediately upon posting to this page.

8. Contact Information

For legal inquiries, terms clarification, or technical questions:

Rock Coverage Calculator — Legal & Technical Support

Email: rockcoveragecalculator@gmail.com

Website: rockcoveragecalculator.com