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How Much Decomposed Granite for a 14x24 Patio?

How much decomposed granite for a 14x24 patio is a quick volume problem. 336 square feet at 3 inches comes to 3.11 cubic yards. Decomposed granite usually weighs about 1.25 to 1.45 tons per cubic yard, so plan on roughly 4.2 tons.

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The math for a 14x24 patio

  1. Area: 14 × 24 = 336 sq ft.
  2. Depth in feet: 3 ÷ 12 = 0.250 ft.
  3. Cubic feet: 336 × 0.250 = 84.0 cu ft.
  4. Cubic yards: ÷ 27 = 3.11 yd³.
  5. Tons: × 1.35 = 4.2 tons.

The volume and tonnage calculator does this for any size.

Decomposed granite needed by depth

DepthCubic yardsTons (approx.)Tons +10%
2 in2.072.83.1
3 in3.114.24.6
4 in4.155.66.2

About decomposed granite

DG should be laid in thin lifts, wetted and compacted. Loose DG at a deep depth stays soft and tracks onto shoes. Weight per yard is a planning number; the scale ticket at the yard is the real one.

Preparing the patio

Remove sod, level the area with a slight slope away from the house, and lay landscape fabric if weeds are a concern. Edging keeps loose material inside the patio footprint. For foot traffic and furniture, the depths in the table above are a reasonable starting range.

Ordering tips

  • Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
  • Delivery size. 4.6 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
  • Bulk vs bags. At this size bulk delivery is usually the practical choice.
  • Where it drops. Have the truck dump as close to the patio as firm ground allows.

When to choose decomposed granite

Best suited to:

  • Garden paths and patios with a natural look
  • Around trees and in xeriscape designs
  • Stabilized DG for accessible paths

Think twice for:

  • Steep grades without a stabilizer
  • Areas right outside doors, since fines track in
  • Driveways with heavy turning traffic

Quick reference numbers

  • Per inch over 100 sq ft: about 0.42 tons of decomposed granite (0.31 cubic yards).
  • Per inch over 1,000 sq ft: about 4.2 tons.
  • Another size for comparison: a 14x28 area at 4 inches takes about 6.5 tons.
  • Weight used here: about 1.35 tons per cubic yard.

Where estimates go wrong

  • Skipping drainage. Water sitting under any surface softens the base and leads to ruts and potholes.
  • Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
  • Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
  • Ordering exactly the math. Uneven ground and spillage nearly always need a little more than the flat calculation.

Questions people ask

How many tons of decomposed granite for a 14x24 patio?

About 4.2 tons at 3 inches deep, or 4.6 tons with 10 percent extra.

How many cubic yards is a 14x24 patio at 3 inches?

About 3.11 cubic yards.

How much does a cubic yard of decomposed granite weigh?

Usually around 1.25 to 1.45 tons, depending on stone size, fines and moisture.

How deep should decomposed granite be for a patio?

The table above shows 2 to 4 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 14x24?

336 square feet.

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