The coverage area of 20 tons of gravel can vary depending on several factors, including the depth of the gravel layer and the size or type of gravel used. To calculate the coverage area in square feet or square yards, you’ll need to know the depth of the gravel layer you want to spread. Gravel is one of the most important building material collected from river basin, mountains, rocks, small rocks, pebbles, loose and dry sand, aggregate and pea gravel. Pea gravel is chosen best for walkway because it is round in shape of small size which make it most comfortable to work on.

How much area does 20 tons of gravel cover? It will depends on the size of the stone, the amount of dust content and the thickness of the layer and the how level the surface is to be covered.

Gravel is made of rock is to build roads, path, driveway, Patio, pedestrian, pavement, pathways, roadways, landscaping, and etc.

Gravel is categorized according to their size, size more than 5mm put in the category of gravel, it is formed of igneous rocks. It is categorized as fine gravel (4 – 8 mm), medium gravel (8 – 16 mm), coarse gravel (16 – 32 mm), pebbles (32 – 64 mm), cobbles (64 – 256 mm) and Boulder more than 256mm.

You are looking to buying gravel and crushed stone for your construction work, if you want to apply them in normal depth 50 mm for your driveway and 35 mm depth normally in pedestrian pathway, you need to know how much area will cover by 20 tons of gravel and you should purchase and you can load in your vehicle.

Weight of gravel depends on the rocks type, loose and dense condition, compact, moisture content, dry and wet condition, others inorganic mixed in the gravel. For estimating purpose, contractor’s and Builder’s would take weight of gravel as 3000 lb per yard or 1.5 short tons per yard and 110 lb per cubic feet.

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**How much will 20 tons of gravel cover**

A ton of gravel can cover from 20 square feet to 240 square feet. It depends on the size of the gravel and the depth of coverage. Using 2 inches for the depth, 1/4 to 1/2 inch size of gravel will cover 100 square feet per ton; 1/2 to 1 inch gravel, 90 square feet per ton; and 1 1/2 to 2 inches gravel, 80 square feet per ton.

20 tons of 1/4 to 1/2 inch size of gravel will cover approximately 2000 square feet (225 square yards, or 185 square meters) at 2 inches deep on average. The 1/2 to 1 inch size of gravel will cover 1800 square feet for 20 tons, and 1 1/2 to 2 inches size of gravel will cover 1600 square feet for 20 tons at 2 inches deep.

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**How much will 20 tons of gravel cover at 3 inches and 4 inches**

To calculate how much area 20 tons of gravel will cover at different depths (3 inches and 4 inches), you can use the formula:

Coverage Area (in square feet) = (Total Weight in pounds) / (Weight per square foot at the desired depth)

First, let’s calculate the coverage area for 3 inches of gravel:

Convert the weight of the gravel from tons to pounds: 20 tons x 2,000 pounds/ton = 40,000 pounds.

Determine the desired depth in feet. 3 inches is 3/12 feet (0.25 feet).

Use the formula:

Coverage Area (at 3 inches) = 40,000 pounds / (Weight per square foot at 0.25 feet depth)

Now, calculate the coverage area for 4 inches of gravel:

Convert the weight of the gravel from tons to pounds: 20 tons x 2,000 pounds/ton = 40,000 pounds.

Determine the desired depth in feet. 4 inches is 4/12 feet (0.333 feet).

Use the formula:

Coverage Area (at 4 inches) = 40,000 pounds / (Weight per square foot at 0.333 feet depth)

The “Weight per square foot at the desired depth” will depend on the type and compaction of the gravel. Let’s assume that the gravel weighs around 100 pounds per cubic foot (pcf) when compacted.

**For 3 inches of gravel:**

Coverage Area (at 3 inches) = 40,000 pounds / (100 pcf x 0.25 feet) = 40,000 pounds / 25 pounds/square foot = 1,600 square feet

**For 4 inches of gravel:**

Coverage Area (at 4 inches) = 40,000 pounds / (100 pcf x 0.333 feet) = 40,000 pounds / 33.33 pounds/square foot ≈ 1,200 square feet

So, 20 tons of gravel will cover approximately 1,600 square feet at a depth of 3 inches and approximately 1,200 square feet at a depth of 4 inches, assuming a gravel density of 100 pounds per cubic foot. Keep in mind that the actual coverage may vary based on factors like compaction and the type of gravel.

**Conclusions:-**

20 tons of 1/4 to 1/2 inch size of gravel will cover approximately 2000 square feet for the depth of 2 inches, on average.