How many bags of concrete do i need for a 10×10 slab | how many 60 lb bags of concrete do i need for a 10×10 slab | how many 80 lb bags of concrete do i need for a 10×10 slab.

Concrete ready mix is made of blended mix of Portland cement, sand gravel and other approved admixture. Generally, dry ready mix concrete are available in different bag size and weight condition like 40-pound, 60-pound bag, 80-pound bag, and 90-pound bag.

Regardless of size you need to calculate the volume of concrete in cubic yards before ordering the concrete bags. Volume is calculated by multiplying length, width and depth of slab. In this article we have to calculate required quantity of concrete in cubic yard, or in cubic feet, or number of concrete bag for a 10×10 (100 sq ft) slab at 2 inches, 3 inches, 4 inches, 5 inches or 6 inches thick.

Generally standard thickness of concrete slab is 4 inches thick in normal conditions, if 10×10 slab have heavy traffic and heavy load, you should take depth 5″ or 6 inches thick. Or at low load you should take depth 2″ or 3 inches thick.

Dry mix of premix concrete weighs about 133 pound per cubic foot, 3,600 pound per cubic yard, or 2,136 kg per cubic metre. This unit weight of concrete is determined by its density, which can vary based on the amount of gravel, sand, water, and air in the mix.

In United States, based on Imperial and US customary measurement system, one cubic yard is unit of measurement of volume represented by 3 feet long by 3 feet wide by 3 feet high (3’×3’×3′ = 27 cubic feet), so one cubic yard is equal to 27 cubic feet.

Ready mix concrete or bag concrete can be used for building or repairing foundation walls, fence post, sidewalks, curbs, steps and ramps and for setting posts and others concrete structure like, footing, slab, beam and columns.

**How many bags of concrete do i need for a 10×10 slab**

To figure the amount of yards of concrete you will need, take all the measurements Length & width in feet and thickness in inches. Convert thickness in feet. Multiply its length, width and thickness to get cubic footage. Multiply the total cubic footage by 0.037 to get total yards of concrete needed.

To determine how many bags of premixed concrete you will need, divide the total cubic yards needed by the bag yields. Use the following yields per each bag size: A 40-pound bag yields 0.011 cubic yards, a 60-pound bag yields 0.017 cubic yards, a 50-pound bag yields 0.0138 cubic yards and an 80-pound bag yields 0.022 cubic yards.

If you measure their yields in cubic feet, then yields per each bag size are following: A 40-pound bag yields 0.30 cubic feet, a 60-pound bag yields 0.45 cubic feet, a 50-pound bag yields 0.375 cubic feet and an 80-pound bag yields 0.60 cubic feet.

**To determine the how many bags of concrete do I need for a 10×10 slab, this solve in following steps:-**

Step 1 :- Calculate the volume in cubic feet:- we have given 10×10 slab (length × width), consider it is 4 inches thick slab, 4 inch = 4″/12 = 0.33 feet, to determine the volume of slab, you need to multiply all dimensions, such that = 10′ × 10′ × 0.33′ = 33 cubic foot.

Step 2 :- Converting cubic feet into cubic yard:- you should divide it by 27, because 1 cubic yard = 27 cubic foot, so volume of concrete you needed for 10 × 10 slab at 4 inches thick in cubic yard = 33/27 = 1.23 cubic yards.

Step 3 :- Add 10% extra :- considering extra 10% wastage during mixing and pouring, so 10% of 1.23 cubic yards = 0.123, add 1.23 + 0.122 = 1.35 cubic yards.

Step 4:- Divide required quantity of concrete in cubic feet by per bag yields, such as No. of 90lb bags = 33/0.68 = 48 bags, No. of 80lb bags = 33/0.60 = 55 bags, No. of 60lb bags = 33/0.45 = 74 bags, No. of 50lb bags = 33/ 0.375 = 88 bags, or No. of 40lb bags = 33/0.30 = 110 bags.

Always you should purchase 5 to 10% more premixed than required. 4″ thick slab of 10×10 is ideal in normal load or standard condition for making sidewalks, curbs, steps, ramp, walkway and patio and 5 inch or 6 inch thick slab is ideal for heavy load and heavy traffic.

**How many bags of concrete do i need for a 10×10 slab?** For a 10×10 Slab with 4” thickness, you need either 55 80-Pound, 74 60-pound, 88 50-pound, 48 90-pound or 110 40-pound bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 33 cubic feet or 1.23 cubic yards of concrete mix will be required.

You can also use concrete calculator online tool to calculate how many bags of concrete do you need for your project.

**How many bags of concrete do i need for a 10×10 slab at 4 inches thick**

For a 10×10 Slab at 4 inches thick, you need either **55 80-Pound, 74 60-pound, 88 50-pound, 48 90-pound or 110 40-pound** bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 33 cubic feet or 1.23 cubic yards of concrete mix will be required.

**Let’s do calculation and proceeds following steps:**

● 4″ thickness in feet = 4/12 = 0.33′

● Volume of concrete in cubic feet = 10 × 10 × 0.33 = 33

● Volume of concrete in yards = 33 × 0.037 = 1.23 yards.

● No. of 80lb bags = 33/0.60 = 55 bags

● No. of 60lb bags = 33/0.45 = 74 bags

● No. of 50lb bags = 33/0.375 = 88 bags

● No. of 40lb bags = 33/0.30 = 110 bags

● No. of 90lb bags = 33/0.68 = 48 bags

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**How many bags of concrete do i need for a 10×10 slab at 5 inches thick**

For a 10×10 Slab at 5 inches thick, you need either **70 80-Pound, 93 60-pound, 112 50-pound, 62 90-pound or 140 40-pound** bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 41.7 cubic feet or 1.54 cubic yards of concrete mix will be required.

**Let’s do calculation and proceeds following steps:**

● 5″ thickness in feet = 5/12 = 0.417′

● Volume of concrete in cubic feet = 10 × 10 × 0.417 = 41.7 cubic feet

● Volume of concrete in yards = 41.7 × 0.037 = 1.54 yards.

● No. of 80lb bags = 41.7/0.60 = 70 bags

● No. of 60lb bags = 41.7/0.45 = 93 bags

● No. of 50lb bags = 41.7/0.375 = 112 bags

● No. of 40lb bags = 41.7/0.30 = 140 bags

● No. of 90lb bags = 41.7/0.68 = 62 bags.

**How many bags of concrete do i need for a 10×10 slab at 6 inches thick**

For a 10×10 Slab at 6 inches thick, you need either **84 80-Pound, 112 60-pound, 134 50-pound, 74 90-pound or 167 40-pound** bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 50 cubic feet or 1.85 cubic yards of concrete mix will be required.

**Let’s do calculation and proceeds following steps:**

● 6″ thickness in feet = 6/12 = 0.50′

● Volume of concrete in cubic feet = 10 × 10 × 0.5 = 50 cubic feet

● Volume of concrete in yards = 50 × 0.037 = 1.85 yards.

● No. of 80lb bags = 50/0.60 = 84 bags

● No. of 60lb bags = 50/0.45 = 112 bags

● No. of 50lb bags = 50/ 0.375 = 134 bags

● No. of 40lb bags = 50/0.30 = 167 bags

● No. of 90lb bags = 50/0.68 = 74 bags.

**How many bags of concrete do i need for a 10×10 slab at 2 inches thick**

For a 10×10 Slab at 2 inches thick, you need either **28 80-Pound, 37 60-pound, 45 50-pound, 25 90-pound or 56 40-pound** bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 16.6 cubic feet or 0.614 cubic yards of concrete mix will be required.

**Let’s do calculation and proceeds following steps:**

● 2″ thickness in feet = 2/12 = 0.166′

● Volume of concrete in cubic feet = 10 × 10 × 0.166 = 16.6 cubic feet

● Volume of concrete in yards = 16.6 × 0.037 = 0.614 yards.

● No. of 80lb bags = 16.6/0.60 = 28 bags

● No. of 60lb bags = 16.6/0.45 = 37 bags

● No. of 50lb bags = 16.6/0.375 = 45 bags

● No. of 40lb bags = 16.6/0.30 = 56 bags

● No. of 90lb bags = 16.6/0.68 = 25 bags.

**How many bags of concrete do i need for a 10×10 slab at 3 inches thick**

For a 10×10 Slab at 3 inches thick, you need either **42 80-Pound, 56 60-pound, 67 50-pound, 37 90-pound or 84 40-pound** bags (or sacks) of premixed (Quikrete or Sakrete) bag concrete. If you measured in cubic feet or in cubic yards, then 25 cubic feet or 0.925 cubic yards of concrete mix will be required.

**Let’s do calculation and proceeds following steps:**

● 3″ thickness in feet = 3/12 = 0.25′

● Volume of concrete in cubic feet = 10 × 10 × 0.25 = 25 cubic feet

● Volume of concrete in yards = 25 × 0.037 = 0.925 yards.

● No. of 80lb bags = 25/0.60 = 42 bags

● No. of 60lb bags = 25/0.45 = 56 bags

● No. of 50lb bags = 25/0.375 = 67 bags

● No. of 40lb bags = 25/0.30 = 84 bags

● No. of 90lb bags = 25/0.68 = 37 bags.

**How many yards of concrete do i need for a 10×10 slab**

For a 10×10 Slab, you need either 1.23 cubic yards of concrete at 4″ thick, 0.925 yards of concrete at 3″ thick, 0.614 yards of concrete at 2″ thick, 1.54 yards of concrete at 5″ thick, or 1.85 yards of concrete at 6″ thick.

**How many cubic feet of concrete do i need for a 10×10 slab**

For a 10×10 Slab, you need either 33 cubic feet of concrete at 4″ thick, 25 cubic feet of concrete at 3″ thick, 16.6 cubic feet of concrete at 2″ thick, 41.7 cubic feet of concrete at 5″ thick, or 50 cubic feet of concrete at 6″ thick.

**How many 80 lb bag of concrete do i need for a 10×10 slab**

For a 10×10 Slab, you need 55 bags of 80-Pound concrete at 4″ thick, 42 bags of 80lb concrete at 3″ thick, 28 bags of 80lb concrete at 2″ thick, 70 bags of 80lb concrete at 5″ thick, or 80 bags of 80lb concrete at 6″ thick.

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**How many 60 lb bag of concrete do i need for a 10×10 slab**

For a 10×10 Slab, you need 74 bags of 80-Pound concrete at 4″ thick, 56 bags of 80lb concrete at 3″ thick, 37 bags of 80lb concrete at 2″ thick, 93 bags of 80lb concrete at 5″ thick, or 112 bags of 80lb concrete at 6″ thick.

**How much concrete do i need for a 10×10 slab**

If you have a 10×10 slab with 4 inches thick, you would need either **55 80-Pound, 74 60-pound, 88 50-pound, or 110 40-pound** bags of premixed concrete. If you measured in cubic feet or in cubic yards, then 33 cubic feet or 1.23 cubic yards of concrete mix will be required.

**Conclusions:**

For a 10×10 Slab, you need either 55 bags of 80-Pound concrete at 4″ thick, 42 bags of 80lb concrete at 3″ thick, 28 bags of 80lb concrete at 2″ thick, 70 bags of 80lb concrete at 5″ thick, or 80 bags of 80lb concrete at 6″ thick.