Example Data Table
| Input |
Example Value |
Purpose |
| Area | 100 ft × 20 ft | Defines the surface needing base material. |
| Depth | 6 inches | Sets compacted base thickness. |
| Waste and compaction | 5% waste, 10% compaction | Raises ordered quantity above finished volume. |
| Recycled concrete | 1.35 tons/cu yd, $22 per ton | Estimates reused aggregate tonnage and cost. |
| Limestone | 1.50 tons/cu yd, $34 per ton | Estimates quarried stone tonnage and cost. |
Formula Used
Area: length × width.
Finished volume: area × compacted depth.
Finished cubic yards: finished cubic feet ÷ 27.
Purchase cubic yards: finished cubic yards × (1 + waste %) × (1 + compaction %).
Tons: purchase cubic yards × material density.
Truck loads: ceiling of tons ÷ truck capacity.
Total cost: material cost + delivery cost + haul cost.
Carbon estimate: tons × material factor + tons × haul miles × haul factor.
How to Use This Calculator
Enter the project length, width, and compacted depth. Pick the correct units before calculating.
Add waste and compaction allowances based on site conditions, grading loss, and expected settlement.
Enter supplier density, price, delivery charge, and distance for both materials.
Use local tickets and quotes when available. Defaults are only starting values for planning.
Press the calculate button. Review volume, tons, loads, cost, and carbon comparison above the form.
Construction Material Comparison Guide
Material Choice
Recycled concrete and limestone can both make strong construction bases. The better choice depends on load, drainage, price, trucking, and local supply. This calculator compares them with the same project geometry, so the result is easier to review.
Recycled concrete is made from crushed concrete rubble. It often contains stone, sand, and old cement paste. Many contractors use it for driveways, temporary roads, parking areas, and utility trench backfill. It can lock together well after compaction. It may also cost less when recycling yards are close.
Aggregate Behavior
Limestone aggregate is quarried and crushed to graded sizes. It is common for road bases, building pads, drainage layers, and finished subbase work. Limestone can offer consistent gradation and predictable density. It may be preferred when specifications demand a virgin aggregate source.
Material volume starts with length, width, and compacted depth. Waste and compaction allowances increase the purchase volume. Density converts cubic yards into tons. Then the calculator applies supplier price, load count, delivery fee, haul distance, and emission factors.
Cost and Hauling
Small differences can matter. A lower ton price may lose value when density is higher. A nearby source may beat a cheaper distant source. More truck loads can raise delivery cost. A better compaction allowance can prevent shortages and delays.
Use supplier density data whenever possible. Moisture, gradation, and fines change real field weight. Also check project specifications before choosing recycled aggregate. Some drainage, concrete, and structural uses may require a listed stone type.
Planning Notes
This tool is a planning guide, not a final bid. Confirm quantities with your supplier and site engineer. Measure the prepared area carefully. Review access, unloading space, and compaction equipment. With those details, the comparison becomes practical and clear.
Read the result from top to bottom. First compare purchase volume. Then compare tons and loads. Next study total cost and cost per square foot. Finally compare carbon output. The lowest price is not always the best value. A material that needs fewer loads can save time. A material with better local availability can reduce risk. For tight projects, keep a small reserve on site. It helps cover soft spots, edge losses, and final grading corrections. Document assumptions so crews, estimators, and suppliers discuss the same quantity before ordering material onsite.
FAQs
Is recycled concrete cheaper than limestone?
It is often cheaper per ton, but final cost depends on density, haul distance, delivery fees, and load count. A nearby limestone supplier may beat a distant recycled concrete yard.
Which material is better for driveway base?
Both can work for driveway base when properly graded and compacted. Check local specifications, drainage needs, and supplier gradation before choosing the final material.
Why does density matter?
Density converts cubic yards into tons. A denser material needs more tons for the same volume, which can raise material cost, hauling cost, and truck load count.
What compaction allowance should I use?
Use a field allowance based on material type and equipment. Many planners start with 5% to 15%, but supplier advice and project specifications should guide the final number.
Does recycled concrete drain well?
Drainage depends on gradation, fines, and compaction. Clean, well-graded recycled concrete can drain better than material with many fines. Ask for sieve data when drainage matters.
Can I use this for road base?
Yes, for planning quantities and cost comparison. For public roads or engineered work, confirm allowed aggregate types, gradation, compaction, and testing standards before ordering.
Why include haul emissions?
Hauling can change the environmental comparison. A low-carbon material from far away may create more total emissions than a higher-impact material from a closer source.
Are the default prices final quotes?
No. Defaults are sample planning values. Replace them with current supplier quotes, delivery fees, truck sizes, and local density data before using results for bidding.