How Much #57 Stone for a 10x12 Greenhouse Floor?
A 10 by 12 foot greenhouse covers 120 square feet. At 3 inches of #57 stone, plan on 1.11 cubic yards, or about 1.5 tons, which answers how much #57 stone for a 10x12 greenhouse floor.
Volume and tonnage calculator →The math
- Area: 120.0 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic yards: 120.0 × 0.250 ÷ 27 = 1.11 yd³.
- Tons: × about 1.35 tons per yard = 1.5 tons.
The crushed stone calculator does this for any size.
Related: How Much Pea Gravel for a 10x12 Greenhouse Floor?
#57 stone needed by depth
| Depth | Cubic yards | Tons of #57 stone | Tons +10% |
|---|---|---|---|
| 2 in | 0.74 | 1.0 | 1.1 |
| 3 in | 1.11 | 1.5 | 1.7 |
| 4 in | 1.48 | 2.0 | 2.2 |
| 6 in | 2.22 | 3.0 | 3.3 |
Stone for a greenhouse
A stone floor drains spilled water, holds some heat and is easy to rake clean. Many growers use about 3 inches of pea gravel or washed stone over fabric, with paver or concrete stepping paths if they roll carts.
Related: How Much #57 Stone for a 12x20 Greenhouse Floor?
Before the stone goes in
Remove sod and roots, level the area and slope it slightly for drainage. Install edging so the stone stays inside the footprint.
Ordering and delivery
Most quarries and landscape yards deliver by the ton; ask whether there is a minimum and a delivery fee, and where the driver can dump without damaging your lawn. #57 is a washed stone of roughly 1/2 to 1 inch with few fines; it drains fast but stays a little loose on its own. Round up by about 10 percent for compaction and uneven ground.
Common mistakes
The most frequent problem is ordering for the finished depth without allowing for compaction, which can shrink a loose layer by 10 to 20 percent. Another is skipping fabric on soft soil and watching the stone vanish into the mud over the first wet season. Spreading everything in one thick layer instead of compacted lifts also leaves a soft, rutted surface.
Measuring the area
Measure length and width in feet at a few points and use the largest figures, since real sites are rarely square. For odd shapes, split the area into rectangles and circles, work out each one and add them together. Depth is the number most people underestimate: drive a stake, run a level string and measure down to the dug-out surface in several spots.
Questions people ask
How many tons of #57 stone for a 10x12 greenhouse floor?
About 1.5 tons at 3 inches deep.
How many yards of #57 stone for a 10x12 greenhouse floor?
About 1.11 cubic yards.
How many tons of #57 stone are in a cubic yard?
Roughly 1.35 tons for planning, but suppliers vary with stone size and moisture.
Should I put landscape fabric under the stone?
On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.
Related guides
- Gravel for a Greenhouse Floor: Best Stone, Depth and Tons
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Gravel for a 10x12 Greenhouse Floor?
- How Much Crushed Stone for a 10x12 Greenhouse Floor?
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