How many bags of concrete do i need for a 2×4 slab | how much concrete do I need for a 2×4 slab.
Concrete is a blended mix of Portland cement, sand, aggregate, water with approve ingredient. Cement is acts as binder or adhesive materials to bind the components of concrete all together to create workable paste. Sand acts as filler material that fills the voids and gap between components of concrete and remove the air. Aggregate, stone, or gravel used to strengthen the concrete strength.
To determine how many bags of premixed concrete you will need, divide the total cubic feet 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.
How many bags of concrete do i need for a 2×4 slab
If you have a 2×4 slab, you would need 2.66 cubic feet or either 4.44- 80lb, 6- 60lb bags of concrete at 4″ thick, 2 cubic feet or either 3.33- 80lb, 4.44- 60lb bags of concrete at 3″ thick, and 1.33 cubic feet or either 2.22- 80lb, 3- 60lb bags of concrete at 2″ thick.
How many bags of concrete do i need for a 2×4 slab at 4 inches thick
At 4 inches thick, for a 2×4 slab you would need either 4.44 80-pound, 6 60-pound, 7.12 50-pound, or 8.88 40-pound bags of premixed concrete. If you measure in cubic feet, 2.66 cubic feet 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 = 2 × 4 × 0.33 = 2.66
● No. of 80lb bags = 2.66/0.60 = 4.44 bags
● No. of 60lb bags = 2.66/0.45 = 6 bags
● No. of 50lb bags = 2.66/0.375 = 7.12 bags
● No. of 40lb bags = 2.66/0.30 = 8.88 bags
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How many bags of concrete do i need for a 2×4 slab at 3 inches thick
At 3 inches thick, for a 2×4 slab you would need either 3.33 80-pound, 4.44 60-pound, 5.33 50-pound, or 6.66 40-pound bags of premixed concrete. If you measure in cubic feet, 2 cubic feet of premixed concrete 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 = 2 × 4 × 0.25 = 2
● No. of 80lb bags = 2/0.60 = 3.33 bags
● No. of 60lb bags = 2/0.45 = 4.44 bags
● No. of 50lb bags = 2/0.375 = 5.33 bags
● No. of 40lb bags = 2/0.30 = 6.66 bags.
How many bags of concrete do i need for a 2×4 slab at 2 inches thick
At 2 inches thick, for a 2×4 slab you would need either 2.22 80-pound, 3 60-pound, 3.55 50-pound, or 4.44 40-pound bags of premixed concrete. If you measure in cubic feet, 1.33 cubic feet 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 = 2 × 4 × 0.166 = 1.33
● No. of 80lb bags = 1.33/0.60 = 2.22 bags
● No. of 60lb bags = 1.33/0.45 = 4.44 bags
● No. of 50lb bags = 1.33/0.375 = 5.33 bags
● No. of 40lb bags = 1.33/0.30 = 6.66 bags.
Cost estimate for 2’×4′ slab
For the most part, the typical price range of $4 to $8 per square foot includes labor. A 2×4 slab is an 8 square foot. Using pre-mixed bags to cover 2×4 (8 sq ft) at a depth of 2″ to 4″, the estimated cost is range between $32 to $64 (8× $4 = $32 or 8×$8 = $64).
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Conclusions:
If you have a 2×4 slab with 2 inches thick, you would need either 2.22 80-pound, or 3 60-pound, bags of premixed concrete which will cost range between $32 to $64 including labour.
