3/4″ Minus Base Gravel: Uses, Coverage & Calculator
The contractor favorite for a solid base: 3/4″ stone mixed with fines that compacts into a hard, stable layer.
What is 3/4″ Minus Base Gravel?
"Minus" means the gravel contains every size from 3/4″ down to fine dust. When it is wetted and compacted, the small particles fill the gaps between larger stones and the whole layer locks into a dense, firm base.
That is exactly what you want under driveways, patios, walkways, sheds and concrete slabs. It sheds water across its surface rather than draining through, so grade it to slope away from structures.
| Specification | Details |
|---|---|
| Gradation | 3/4″ minus (3/4″ to fines) |
| Shape | Angular, crushed |
| Fines | Yes, binds when compacted |
| Also known as | Base course, ABC, dense-graded aggregate |
| Approx. weight | 1.45 tons (~2,900 lbs) per cubic yard |
Best uses
- Driveway and parking area base
- Base under pavers and patios
- Sub-base for concrete slabs
- Shed and garage pads
- Walkways that need a firm surface
Not ideal for
- Drainage trenches (fines slow water)
- Decorative top layers
- Areas that must stay permeable
How much 3/4″ Minus Base Gravel do I need?
Enter your area and depth to get cubic yards and tons. Results update as you type.
You'll need about
Based on about 1.45 tons (~2,900 lbs) per cubic yard. Actual weight varies with moisture and source, so treat results as an estimate.
Recommended depth by project
Typical installed depths for 3/4″ Minus Base Gravel. Check local codes or your contractor for structural work.
| Project | Depth | Notes |
|---|---|---|
| Patio or walkway base | 4″ | Compact in one or two lifts |
| Driveway base | 6″ | Compact in 3″ lifts |
| Shed pad | 4″ | Extend 6–12″ past the shed footprint |
| Slab sub-base | 4″ | Follow your contractor or local code |
How to install 3/4″ Minus Base Gravel
A few steps make a big difference to how long it lasts.
- Excavate and levelRemove topsoil and grade the subgrade with a slight slope.
- Spread in liftsSpread 2–3″ at a time; thick single layers do not compact well.
- Wet and compactLightly wet each lift and run a plate compactor until firm.
3/4″ Minus Base Gravel questions
Quick answers to what customers ask most.
What does "minus" mean in 3/4″ minus?
It includes all sizes from 3/4″ down to dust. The fines are what let it compact into a solid base.
Is 3/4″ minus the same as crushed run or road base?
They are similar dense-graded base materials. Names and exact gradations vary by region, but all compact hard and are used under driveways and slabs.
How much area does a ton cover?
At 4″ deep, about 56 sq ft per ton.
Does it need to be compacted?
Yes. Compaction is what turns it into a firm base; uncompacted, it will settle and rut.
Related materials
Not sure this is the right one? Compare similar options.
Drainage & BaseCrushed Run Base MaterialDense stone-and-fines blend for driveways and foundations.
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Drainage & BaseRoad Base GravelCompactable base gravel for roads, driveways and pads.
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Drainage & Base1/4″ Minus Base GravelFine compactable gravel for paths, patios and leveling.
Read guide & calculator →Ready to order 3/4″ Minus Base Gravel?
Delivered by the ton or cubic yard to your driveway or job site.