How many bags of concrete do I need for a 12×12 slab | how much concrete do I need for a 12×12 slab | how many yards of concrete do I need for a 12×12 slab | how many cubic feet of concrete do I need for a 12×12 slab | How many bags of concrete do I need for a 12×12 slab at 4″ thick | How many bags of concrete do I need for a 12×12 slab at 5″ thick | How many bags of concrete do I need for a 12×12 slab at 6″ thick | how many m3 of concrete do I need for a 12×12 slab | how many rmc truck of concrete do I need for a 12×12 slab.
A bag of concrete ready mix made of blended mix of Portland cement, sand gravel and other approved ingredient or admixture, generally, dry ready mix concrete are available in different bag size and weight condition such as 40lb, 60lb bag, 80lb bag, 90lb bag and etc.
Regardless of size you need to calculate the volume of concrete in cubic yard or in cubic feet or in cubic meter or in rmc truck before ordering the mixed concrete. Volume is calculated by multiplying length, width and depth of slab. Here you have given a slab of 12 feet in length and 12 feet in wide, what is thickness of slab?, it’s depend on, is this a slab on the ground or it is elevated, rules differ for both, since failure of ground slab would not kill anyone whereas failure of an elevated slab could.
Thumb rules involves the safety factor that deciding the thickness of slab, 4 inch thick is generally for ground slab, heavy traffic and heavy load, you should take depth 5 or 6 inch thick and for an elevated slab generally thickness should be 5″ to 6″, and 4 inch thick is also made to use in normal conditions.
Generally standard thickness of slab is 4 inch thick in normal conditions, if 12×12 slab have heavy traffic and heavy load, you should take depth 5 or 6 inch thick. In this article we have to calculate required quantity of concrete in cubic yard & in cubic feet and cubic meter for a 12×12 (144 sq ft) slab at 4 inch, 5 inch or 6 inch thick.
Weight of Ready mix concrete in dry condition is about 133 lbs per cubic foot, 3600 lbs per cubic yard, or approximately equal as 2136 kg per cubic meter. The weight of concrete is determined by its density, which can vary based on the amount of aggregate, water, and air in the mix.
In United States, based on Imperial and US customary measurement system, 1 cubic yard is unit of measurement of volume represented by 3 feet long by 3 feet wide by 3 feet depth (3’×3’×3′ = 27 cubic feet), so 1 cubic yard is equal to 27 cubic feet.
How many bags of concrete do i need
To determine how many bags of concrete you will need, divide the total cubic yards needed by the yield. Use the following yields per each bag size: 1) 40 pound bag yields 0.011 cubic yards, 2) 60 pound bag yields 0.017 cubic yards, 3) 80 pound bag yields 0.022 cubic yards, 4) 90 pound bag yields 0.025 cubic yards, and 5) 50 pound bag yields 0.0138 cubic yards.
Bags of concrete calculation formula = Cubic yards of concrete ÷ Yields per bag in yards
For example:- To figure out number of bags of concrete for 1 Yard, you will need, divide the total cubic yards needed by the yield:- 1) No. of 80lb bags = 1÷ 0.022 = 46 bags, 2) No. of 90lb bags = 1÷ 0.025 = 40 bags, 3) No. of 60lb bags = 1÷ 0.017 = 59 bags, 4) No. of 50lb bags = 1÷ 0.0138 = 73 bags, and 5) No. of 40lb bags = 1÷ 0.011 = 91 bags.
How many bags of concrete do I need for a 12×12 slab
To determine the how much concrete do I need for a 12×12 slab & how many bags of concrete do I need for this, you can solve in following steps:-
Step 1 :- calculate the volume in cubic feet:- you have given 12×12 slab (length × width), consider it is 4 inch thick, 4 inch = 0.33 feet, to determine the volume of slab, you need to multiply all dimensions, such that = 12′×12′× 0.33′ = 47.52 cubic foot, at 5 inch thick, volume of slab is 12′×12′× 0.416 = 59.90 cubic foot and at 6 inch thick, volume of slab is 12′×11′× 0.5 = 72 cubic foot.
Step 2 :- converting cubic feet into cubic yard:- now converting into cubic yard, you should divide it by 27, so volume of concrete you needed for 12×12 slab at 4 inch thick in cubic yard = 47.52/27 = 1.76 cubic yards, at 5 inch thick = 59.90/27 = 2.22 cubic yards & at at 6 inch thick = 72/27 = 2.66 cubic yards.
Step 3:- add 10% extra which would be wastage during mixing and pouring.
Step 4:- to determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, as you know premixed bag of concrete available in 40lb, 60lb & 80lb. 40lb bag of concrete yields about 0.011 cubic yards, 60lb bag of concrete yields about 0.017 cubic yards and 80lb bag of concrete yields about 0.022 cubic yards.
Number of bags of concrete for a 12×12 slab at 4 inch thick
To determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, at 4 inch thick, for a 12×12 slab you will need 1.76 yards of concrete, so number of 80lb bag of concrete = 1.76 ÷ 0.022 = 80 bags, No. of 60lb bag = 1.76 ÷ 0.017 = 106 bags & No. of 40lb bag = 1.76 ÷ 0.011 = 159 bags.
Number of bags of concrete for a 12×12 slab at 5 inch thick
To determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, at 5 inch thick, for a 12×12 slab you will need 2.22 yards of concrete, so number of 80lb bag of concrete = 2.22 ÷ 0.022 = 100 bags, No. of 60lb bag = 2.22 ÷ 0.017 = 134 bags and No. of 40lb bag = 2.22 ÷ 0.011 = 200 bags.
Number of bags of concrete for a 12×12 slab at 6 inch thick
To determine how many bags of concrete you will need, divide the total cubic yards needed by the yields, at 6 inch thick, for a 12×12 slab you will need 2.66 yards of concrete, so number of 80lb bag of concrete = 2.66 ÷ 0.022 = 120 bags, No. of 60lb bag = 2.66 ÷ 0.017 = 160 bags and No. of 40lb bag = 2.66 ÷ 0.011 = 240 bags.
To determine how many bags of premixed concrete you will need, divide the total cubic yards needed by the yield. Use the following yields per each bag size: A 40 pound bag yields 0.011 cubic yards, 60 pound bag yields 0.017 cubic yards, 50 pound bag yields 0.0138 cubic yards and 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, 60 pound bag yields 0.45 cubic feet, 50 pound bag yields 0.375 cubic feet and 80 pound bag yields 0.60 cubic feet.
To figure the amount of yards of concrete you will need, take the all measurements Length in feet, 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.
For a 12×12 slab, you would need approximately 1.76 yards (47.52 cubic feet, or either 80- 80lb, 106- 60lb bags) of concrete at 4″ thick, 2.22 yards (60 cubic feet, or either 100- 80lb, 134- 60lb bags) of concrete at 5″ thick, 1.332 yards (36 cubic feet, or either 60- 80lb, 80- 60lb bags) of concrete at 3″ thick, or 2.664 yards (72 cubic feet, or either 120- 80lb, 160- 60lb bags) of concrete at 6″ thick.
How many bags concrete do i need for a 12×12 slab at 4 inches thick
At 4 inches thick, for a 12×12 slab you would need 1.76 cubic yards or 47.52 cubic feet of concrete. If you use premix concrete, either 80 80-Pound, 106 60-pound, 127 50-pound, or 159 40-pound bags of premixed concrete 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 = 12 × 12 × 0.33 = 47.52
● Volume of concrete in yards = 47.52 × 0.037 = 1.76 yards.
● No. of 80lb bags = 47.52/0.60 = 80 bags
● No. of 60lb bags = 47.52/0.45 = 106 bags
● No. of 50lb bags = 47.52/0.375 = 127 bags
● No. of 40lb bags = 47.53/0.30 = 159 bags
How many bags concrete do i need for a 12×12 slab at 5 inches thick
At 5 inches thick, for a 12×12 slab you would need 2.22 cubic yards or 60 cubic feet of concrete. If you use premix concrete, either 100 80-Pound, 134 60-pound, 160 50-pound, or 200 40-pound bags of premixed concrete will be required.
Let’s do calculation and proceeds following steps:
● 5″ thickness in feet = 4/12 = 0.417′
● Volume of concrete in cubic feet = 12 × 12 × 0.417 = 60
● Volume of concrete in yards = 60 × 0.037 = 2.22 yards.
● No. of 80lb bags = 60/0.60 = 100 bags
● No. of 60lb bags = 60/0.45 = 134 bags
● No. of 50lb bags = 60/0.375 = 160 bags
● No. of 40lb bags = 60/0.30 = 200 bags.
How many bags concrete do i need for a 12×12 slab at 3 inches thick
At 3 inches thick, for a 12×12 slab you would need 1.332 cubic yards or 36 cubic feet of concrete. If you use premix concrete, either 60 80-Pound, 80 60-pound, 96 50-pound, or 120 40-pound bags of premixed concrete will be required.
How much does a 10×10 concrete slab weigh
What is the weight of a 30×30 concrete slab
What is the weight of a 50×50 concrete slab
What is the weight of a 40×40 concrete slab
How many bags of concrete do I need for a 6×6 slab
Let’s do calculation and proceeds following steps:
● 3″ thickness in feet = 3/12 = 0.25′
● Volume of concrete in cubic feet = 12 × 12 × 0.25 = 36
● Volume of concrete in yards = 36 × 0.037 = 1.332 yards.
● No. of 80lb bags = 36/0.60 = 60 bags
● No. of 60lb bags = 36/0.45 = 80 bags
● No. of 50lb bags = 36/0.375 = 96 bags
● No. of 40lb bags = 36/0.30 = 120 bags.
How many bags concrete do i need for a 12×12 slab at 6 inches thick
At 6 inches thick, for a 12×12 slab you would need 2.664 cubic yards or 72 cubic feet of concrete. If you use premix concrete, either 120 80-Pound, 160 60-pound, 192 50-pound, or 240 40-pound bags of premixed concrete will be required.
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Let’s do calculation and proceeds following steps:
● 6″ thickness in feet = 6/12 = 0.5′
● Volume of concrete in cubic feet = 12 × 12 × 0.5 = 72
● Volume of concrete in yards = 72 × 0.037 = 2.664 yards.
● No. of 80lb bags = 72/0.60 = 120 bags
● No. of 60lb bags = 72/0.45 = 160 bags
● No. of 50lb bags = 72/0.375 = 192 bags
● No. of 40lb bags = 72/0.30 = 240 bags.
How many bags concrete do i need for a 12×12 slab at 2 inches thick
At 2 inches thick, for a 12×12 slab you would need 0.884 cubic yards or 23.9 cubic feet of concrete. If you use premix concrete, either 40 80-Pound, 54 60-pound, 64 50-pound, or 80 40-pound bags of premixed concrete 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 = 12 × 12 × 0.166 = 23.9
● Volume of concrete in yards = 23.9 × 0.037 = 0.884 yards.
● No. of 80lb bags = 23.9/0.60 = 40 bags
● No. of 60lb bags = 23.9/0.45 = 54 bags
● No. of 50lb bags = 23.9/0.375 = 64 bags
● No. of 40lb bags = 23.9/0.30 = 80 bags.
Cost estimate for 12’×12’×4″ slab
Pre-mixed concrete bags cost on average $3.50 per 80lb bag. There are 80 bags of 80 pound premix concrete are required for 12×12 slab at 4″ thick. Using pre-mixed bags to cover 12×12 (144 sq ft) at a depth of 4″, the estimated cost is $280 (80× $3.50 = $280).
Cost estimate for 12’×12’×5″ slab
Pre-mixed concrete bags cost on average $3.50 per 80lb bag. There are 100 bags of 80 pound premix concrete are required for 12×12 slab at 5″ thick. Using pre-mixed bags to cover 12×12 (144 sq ft) at a depth of 5″, the estimated cost is $350 (100 × $3.50 = $350).
Cost estimate for 12’×12’×6″ slab
Pre-mixed concrete bags cost on average $3.50 per 80lb bag. There are 120 bags of 80 pound premix concrete are required for 12×12 slab at 6″ thick. Using pre-mixed bags to cover 12×12 (144 sq ft) at a depth of 6″, the estimated cost is $420 (120 × $3.50 = $420).
Conclusion:
If you have a 12×12 slab with 4 inches thick, you would need 1.76 cubic yards or 47.52 cubic feet of concrete. If you use premix concrete, either 80 80-Pound, 106 60-pound, 127 50-pound, or 159 40-pound bags of premixed concrete will be required.
