Project Details
Boots leave 1-inch impressions — soft but not soupy
45,000 sq ft
Includes material + delivery + placement. Typical: $20–$40/ton
Includes material + installation. Contact us for pricing
Cost Comparison
Without Geogrid
Over-excavation required
36" of aggregate
Total aggregate cost:
$269,325
With InterAx NX850 (Best Performance)
Stabilized section
12" of aggregate
Estimated Savings with Geogrid
$164,550
61% less cost • 24" less aggregate • Fewer trucks • Faster completion
Want Exact Numbers? Use Tensar+ Software
This calculator uses the pocket card for quick estimates. For engineered designs with exact thickness requirements, Tensar+ software uses your actual DCP test data to model site-specific solutions. We run Tensar+ for our customers at no charge — or you can download it from Tensar and run it yourself.
Important Disclaimer
This calculator provides rough estimates based on the Tensar 2025 Subgrade Pocket Card for general comparison purposes only. Actual aggregate thickness requirements depend on site-specific conditions including soil type, moisture content, traffic loading, and other factors that can only be determined through proper field testing. CBR values shown are estimated from visual subgrade conditions and may not reflect your actual soil strength.
For accurate project design, we recommend free DCP testing and Tensar+ software analysis — both of which we provide at no cost to our customers in Ohio.
Get Exact Numbers for Your Project
We offer free DCP testing throughout Ohio. We'll test your subgrade, run the data through Tensar+ design software, and give you an engineered recommendation — no cost, no obligation.
Tensar 2025 Subgrade Pocket Card — Full Reference
Estimated aggregate thickness (inches) to pass a proof roll with 1" deformation. Source: Tensar, a Division of CMC. © 2025.
| Subgrade Condition | Est. CBR | Over-Excavation | BX Geogrid | HX145 | HX165 | NX850 |
|---|---|---|---|---|---|---|
| 3" Deep Footprint | 0.5% | 48" | 36" | 32" | 28" | 24" |
| 1" Deep Footprint | 1% | 36" | 24" | 20" | 16" | 12" |
| 1" Tire Rut (Pickup) | 2% | 24" | 16" | 14" | 10" | 4–6" |
Well graded, angular crushed stone with 5%–15% fines recommended. Special considerations may be needed for highly moisture-sensitive soils (silts, organics) or saturated conditions. Contact Tensar (800-TENSAR-1) or your local distributor for site-specific recommendations.