Contents
- 1 What is the formula for calculating concrete?
- 2 How many square feet will 3 yards of concrete cover?
- 3 How many bags of concrete do I need for a 10×20 slab?
- 4 How much does 4 yards of concrete cost?
- 5 How many bags of cement do I need for 100 square feet?
- 6 How much does 2 yards of concrete cost?
- 7 How many yards of concrete do I need for a 10×10 slab?
- 8 How many bags of concrete makes a yard?
- 9 How many 80lb bags of concrete make a yard?
- 10 Do you need rebar for 4 inch slab?
- 11 How much does 30 yards of concrete cost?
- 12 How thick should a concrete slab be?
- 13 Can I pour a 2 inch concrete slab?
- 14 Is mixing your own concrete cheaper?
- 15 How much does it cost to pour a 12×12 concrete slab?
What is the formula for calculating concrete?
Calculating the volume for concrete requires using three dimensions: length times width (which is area) times the height (thickness) or L x W x H. If you are using feet as your standard unit of measurement, this formula will give you the volume of concrete in cubic feet.
How many square feet will 3 yards of concrete cover?
One Cubic Yard of Concrete: 4-inches thick – covers 81 square feet. 5-inches thick – covers 65 square feet. 6-inches thick – covers 54 square feet.
How many bags of concrete do I need for a 10×20 slab?
A 60-pound bag yields. 017 cubic yards, and an 80-pound bag yields. 022 cubic yards. For a 10 x 10 slab, you would need 77 60-pound bags or 60 80-pound bags.
How much does 4 yards of concrete cost?
Each cubic yard of concrete costs $119 to $147 per cubic yard delivered.
Short-Load Concrete Prices.
| Cubic Yards | Mixing On-site Fees |
|---|---|
| 4 – 4.75 | $80 |
| 3 – 3.75 | $90 |
| 2 – 2.75 | $100 |
| 1 – 1.75 | $110 |
How many bags of cement do I need for 100 square feet?
Ans.:- 7.6 no of cement bags (381.30 kgs) are required for 100 sq ft rcc roof slab 4 inch thick m20 grade concrete. Ans.:- 7.6 bags (381.30 kgs), 9.5 bags (476.10 kgs) & 11.4 bags ( 570.8 kgs) cement are required for 100 sq ft rcc roof slab 4 inch, 5inch & 6 inch thick respectively in m20 grade of concrete.
How much does 2 yards of concrete cost?
According to the NRMCA – Ready Mixed Concrete Industry Data Survey, the average cost of concrete in 2018 was $120 per cubic yard, or $240 for the 2 cubic yards needed for a typical 10-by-10-foot patio.
Bulk Concrete Prices.
| Cubic Yards | Price Range |
|---|---|
| 1* | $140-$200 |
| 2* | $280-$400 |
| 3* | $420-$600 |
| 4* | $560-$800 |
How many yards of concrete do I need for a 10×10 slab?
10 x 10 = 100 square feet. 4 ÷ 12 =.33. 100 x.33 = 33 cubic feet. 33 x.037 = 1.22 cubic yards.
How many bags of concrete makes a yard?
On average, it will take 90 40lb bags, 60 60lb bags, or 45 80lb bags to fill one cubic yard of concrete.
How many 80lb bags of concrete make a yard?
how many 80lb bags of concrete are in a yard? You will need 45 bags of concrete mix to make a cubic yard of concrete. There’s 27 cubic feet of concrete in a cubic yard.
Do you need rebar for 4 inch slab?
No, you do not need rebar for a 4–inch slab of concrete on grade. A 4–inch-thick slab cast on the ground and in permanent contact with it will float and rebar is not required. Rebar is recommended on concrete measuring 5 – 6 inches thick.
How much does 30 yards of concrete cost?
Use $90 per cubic yard as a ballpark figure for concrete prices, but concrete slab cost will vary by region. Also, expect a fee of about $60 per load for delivery from a concrete truck for concrete cost. There could be other fees for such things as Saturday concrete truck delivery and small loads.
How thick should a concrete slab be?
Standard concrete floor slab thickness in residential construction is 4 inches. Five to six inches is recommended if the concrete will receive occasional heavy loads, such as motor homes or garbage trucks. To prepare the base, cut the ground level to the proper depth to allow for the slab thickness.
Can I pour a 2 inch concrete slab?
If done properly, new concrete can often be poured right over an existing slab. For this to be feasible, the contractor needs to pour at least 2 inches thick, use smaller aggregate, and incorporate reinforcement such as welded wire mesh or fiber mixed into the concrete.
Is mixing your own concrete cheaper?
One of the least expensive ways to get concrete is to mix your own. You can buy bags of the mix from a home improvement store. Typically, you only have to add water for it to be ready to pour. Otherwise, you risk getting a weaker concrete once it cures, which could lead to cracks or crumbles within a couple of years.
How much does it cost to pour a 12×12 concrete slab?
How much does a 12×12 concrete slab cost? The average cost to pour a 12×12 concrete slab that is 4” thick is between $888 and $1,584, with professional labor and materials included.