The weight of a square foot of concrete can vary depending on its thickness and the specific type of concrete mix used. On average, a square foot of standard concrete that is 4 inches thick (which is a common thickness for sidewalks and driveways) weighs about 50 pounds (or 0.087 pounds per cubic inch). However, if the concrete is thicker or has different additives, the weight per square foot may vary. It’s important to note that concrete can be much heavier if it’s used for purposes like structural construction, where it is typically thicker and reinforced with steel.

Concrete is mixture of cement, sand, gravel and water with some admixture in the required proportion, generally used for various concreting structure such as shed base, Patio, sidewalk, concrete road, slab, floor slab, column, beam and heavy structure bridge, dam, pool and also used in residential industrial commercial building.

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**1)what is concrete and its types and properties**

You are preparing a ready mix concrete for casting of slab which shall be at 3″, 4″, 5″, 6″, 8″, 10″ & 12″ thick then what will be their weight per sq ft & how do you calculate concrete quantity.

Cured concrete generally weigh around 4050 pounds per cubic yard or 150 pounds per cubic foot which is approximately equal as 2400kg/m3 in metric system. In United States volume of concrete measured in yard (short form of cubic yard) and their weight measured in pounds (lbs).

When we poured fresh concrete for your slab, it will take 24 hours for initial setting, after this curing of concrete is required, curing practices involves keeping the concrete damp or moist until the hydration of concrete is completed and strength is attained. The curing increases the strength and reducing permeability of concrete.

**How much does a square feet (sq ft) of concrete weigh?**

Weight of concrete is calculated by multiplying volume and their density and volume is multiplication of their square footage and thickness of slab. Weight of concrete per square feet is calculated by dividing by their thickness.

Generally 1 cubic foot of cured concrete weigh around 150 pounds, divide this weight by thickness of concrete in feet to get weight of concrete per square foot such as with a standard thickness of 4 inches, normal weight concrete weighs approximately 50 lbs per square foot (4″ = 0.33 feet, 0.33 × 150 = 50 lb).

A square foot of concrete weighs about 19-pound at 1.5 inches thick, 25-pound per square foot at 2 inches thick, 38-pound per square foot at 3 inches thick, 50-pound per square foot at 4 inches thick, 62-pound per square foot at 5 inches thick, 75-pound per square foot at 6 inches thick, 100-pound per square foot at 8 inches thick, 125-pound per square foot at 10 inches thick, or 150-pound per square foot at 12 inches thick.

**How much does concrete weigh**

A typical concrete mix can weigh 150 pound per cubic foot, or 4,050 pound per cubic yard, or, 20 pound per gallon, or 2.4 pound per liter, or 1.39 oz per cubic inch, or which is approximately equal as 2,400 kg per cubic meter. With a standard thickness of 1.5 inches, normal weight concrete weighs about 18 lbs per square foot while lightweight concrete weighs 14.5 lbs per square foot.

**Concrete weight per square inch**

Typical normal concrete weight is approximately 5.55 ounces per square inch at a depth of 4 inches. A typical square inch of concrete weighs 2.1 ounces at a depth of 1.5 inches, 2.78 ounces at 2″ deep and 4.22 ounces at 3″ deep.

**How do you calculate concrete**

**You can calculate concrete in following steps:-**

● Determine how thick you want the concrete and measure the length and width that you’d like to cover

● Multiply the length by the width to determine square footage of concrete

● Convert the thickness from inches to feet by dividing with 12

● Multiply the thickness in feet by the square footage to figure out cubic feet

● Convert cubic feet to cubic yards by multiplying by .037

For example consider a concrete patio 10 feet by 10 feet of standard 4 inch thick, then calculate concrete quantity in cubic yard by following ways:-

● Multiply the length by the width to determine square footage of concrete such as 10′ × 10′ = 100 sq ft

● Convert the thickness from inches to feet by dividing with 12 such as 4÷12 = 0.33 feet

● Multiply the thickness in feet by the square footage to figure out cubic feet such as = 100 sq ft × 0.33 feet = 33 cubic feet

● Convert cubic feet to cubic yards by multiplying by .037 such as 33 × 0.037 = 1.221 cubic yards.

The typical weight of concrete is range between 24 to 27 Pound per square foot, or on an average of 25 Pound per square foot at 2 inches thick. At same thickness, the weight of typical Dry concrete is range between 24 to 27 pound per square foot while weight of wet concrete is range between 25 to 27 pound per square foot and cured concrete weighs about 25 pound per square foot.

**How much does 4 inches of concrete weigh per square foot?**

The 4 inches thick, normal weight concrete can weigh about **50 Pound** per square foot. Mathematical calculation like this convert 4 inches into feet 4÷12 = 0.33 feet, multiply thickness in feet by 150lb such as = 0.33 × 150 = 50 pounds.

**How much does 3 inches of concrete weigh per square foot?**

With a standard thickness of 3 inches, normal weight concrete can weigh about **38 Pound** per square foot. Mathematical calculation like this convert 3 inches into feet 3÷12 = 0.25 feet, multiply thickness in feet by 150lb such as = 0.25 × 150 = 38 pounds.

**How much does 5 inches of concrete weigh per square foot?**

The 5 inches thick of normal weight concrete can weigh about **62 Pound** per square foot. Mathematical calculation like this convert 5 inches into feet 5÷12 = 0.416 feet, multiply thickness in feet by 150lb such as = 0.416 × 150 = 62 pounds.

**How much does 6 inches of concrete weigh per square foot?**

The 6 inches thick of normal weight concrete can weigh about **75 Pound** per square foot. Mathematical calculation like this convert 6 inches into feet 6÷12 = 0.50 feet, multiply thickness in feet by 150lb such as = 0.5 × 150 = 75 pounds.

**How much does 8 inches of concrete weigh per square foot?**

The 8 inches thick of normal weight concrete can weigh about **100-pound** per square foot. Mathematical calculation like this convert 8 inches into feet 8÷12 = 0.66 feet, multiply thickness in feet by 150lb such as = 0.66 × 150 = 100 pounds.

**How much does 10 inches of concrete weigh per square foot?**

The 10 inches thick of normal weight concrete can weigh about **125-pound** per square foot. Mathematical calculation like this convert 10 inches into feet 10÷12 = 0.833 feet, multiply thickness in feet by 150lb such as = 0.833 × 150 = 125 pounds.

**How much does 12 inches of concrete weigh per square foot?**

Regarding this, “how much does 12 inches of concrete weigh per square foot?”, with a standard thickness of 12 inches, normal weight concrete weighs about 150 lbs per square foot. Mathematical calculation like this convert 12 inches into feet 12÷12 = 1 feet, multiply thickness in feet by 150lb such as = 1 × 150 = 150 pounds.

**How much weight does 4 inches of concrete hold?**

With a standard thickness of 4 inches, concrete can hold weight of about **50 lbs** per square foot (sq ft) or **450 lbs** per square yard (sq yd). Mathematical calculation like this convert 4 inches into feet 4÷12 = 0.33 feet, multiply thickness in feet by 150lb such as = 0.33 × 150 = 50 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 50 × 9 = 450 lbs. Thus 4 inches of concrete can hold weight about 50 lb/ sq ft or 450 lb/ sq yd.

**How much weight does 5 inches of concrete hold?**

With a standard thickness of 5 inches concrete can hold weight of about **62 lbs** per square foot (sq ft) or **558 lbs** per square yard (sq yd). Mathematical calculation like this convert 5 inches into feet 5÷12 = 0.416 feet, multiply thickness in feet by 150lb such as = 0.416 × 150 = 62 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 62 × 9 = 558 lbs. Thus 5 inches of concrete can hold weight about 62 lb/ sq ft or 558 lb/ sq yd.

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**How much weight does 3 inches of concrete hold?**

With a standard thickness of 3 inches concrete can hold weight of about **38-pound** per square foot (sq ft) or **342-pound** per square yard (sq yd). Mathematical calculation 3÷12 = 0.25 feet, 0.25 × 150 = 36lb/ sq ft, 38 × 9 = 342 lb/ sq yd.

**How much does concrete slab weigh?**

With a standard thickness of 4 inches, normal weight concrete slab weighs about 50 lbs per square foot (sq ft) or 450 lbs per square yard (sq yd), for at 3 inches thick it will be weigh 38 lbs or 342 lbs, for at 5 inches thick it will be weigh 62 lbs or 558 lbs and for at 6 inches thick it will be weigh 75 lbs per sq ft or 342 lbs per sq yd.

**How much does a 4 inch concrete slab weigh?**

With a standard thickness of 4 inches, normal weight concrete slab weighs about 50 lbs per square foot (sq ft) or 450 lbs per square yard (sq yd). Mathematical calculation like this convert 4 inches into feet 4÷12 = 0.33 feet, multiply thickness in feet by 150lb such as = 0.33 × 150 = 50 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 50 × 9 = 450 lbs.

The typical weight of a 4-inch concrete solid slab is about **50- Pound** per square foot, or approximately **450- Pound** per square yard. This is weight of 4-inch thick concrete slab per sq ft and per square yard used for estimate purpose.

**How much does a 5 inch concrete slab weigh?**

With a standard thickness of 5 inches, normal weight concrete slab weighs about 62 lbs per square foot (sq ft) or 558 lbs per square yard (sq yd) Mathematical calculation like this convert 5 inches into feet 5÷12 = 0.416 feet, multiply thickness in feet by 150lb such as = 0.416 × 150 = 62 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 62 × 9 = 558 lbs.

The typical weight of a 5-inch concrete solid slab is about **62- Pound** per square foot, or approximately **558- Pound** per square yard. This is weight of 5-inch thick concrete slab per sq ft and per square yard used for estimate purpose.

**How much does a 6 inch concrete slab weigh?**

With a standard thickness of 6 inches, normal weight concrete slab weighs about 75 lbs per square foot (sq ft) or 675 lbs per square yard (sq yd) Mathematical calculation like this convert 6 inches into feet 6÷12 = 0.5 feet, multiply thickness in feet by 150lb such as = 0.5 × 150 = 75 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 75 × 9 = 675 lbs.

The typical weight of a 6-inch concrete solid slab is about **75- Pound** per square foot, or approximately **675- Pound** per square yard. This is weight of 6-inch thick concrete slab per sq ft and per square yard used for estimate purpose.

**How much does a 3 inch concrete slab weigh?**

Regarding this, “how much does a 3 inch of concrete slab weigh?”, with a standard thickness of 3 inches, normal weight concrete slab weighs about 38 lbs per square foot (sq ft) or 342 lbs per square yard (sq yd) Mathematical calculation like this convert 3 inches into feet 3÷12 = 0.25 feet, multiply thickness in feet by 150lb such as = 0.25 × 150 = 38 pounds, as 1 sq yd = 9 sq ft, so concrete weight per sq yd = 38 × 9 = 342 lbs.

The typical weight of a 3-inch concrete solid slab is about **38- Pound** per square foot, or approximately **342- Pound** per square yard. This is weight of 3-inch thick concrete slab per sq ft and per square yard used for estimate purpose.

**Concrete weight per square foot**

A normal concrete weighs about 12.5 pounds per square foot at 1 inch thick while light weight concrete weighs about 10 pounds per square foot at 1 inch thick. At 2 inches thick, a typical concrete mix weighs 25 Pound per square foot. At 3 inches thick, a typical concrete mix weighs 37.5 Pound per square foot. At 4 inches thick, a typical concrete mix weighs 50 Pound per square foot.

**Concrete weight per square yard**

A normal concrete weighs about 112.5 pounds per square yard at 1 inch thick while light weight concrete weighs about 90 pounds per square yard at 1 inch deep. At 2 inches thick, a typical concrete mix weighs 225 Pound per square yard. At 3 inches thick, a typical concrete mix weighs 337.5 Pound per square yard. At 4 inches thick, a typical concrete mix weighs 450 Pound per square yard.

**Concrete weight per square metre**

A normal concrete weighs about 60 kilogram per square metre at 25 mm thick while light weight concrete weighs about 50 kilogram per square metre at 25 mm deep. At 50 mm thick, a typical concrete mix weighs 120 kilogram per square meter. At 80 mm thick, a typical concrete mix weighs 180 kilogram per square meter. At 100 mm thick, a typical concrete mix weighs 240 kilogram per square meter.

**Conclusion:-**

A square foot of normal weight concrete can weigh about 12.5 pound at 1 inch thick while light weight concrete weighs about 10 pounds per square foot at 1 inch thick. At 2 inches thick, a typical concrete mix weighs 25 Pound per square foot. At 3 inches thick, a typical concrete mix weighs 37.5 Pound per square foot. At 4 inches thick, a typical concrete mix weighs 50 Pound per square foot.