Contents

- 1 How do I figure out how many yards of concrete I need?
- 2 How many square feet is a yard of concrete 3 inches thick?
- 3 How much does it cost to pour a 30×50 slab?
- 4 How many 80 lb bags of concrete are in a yard?
- 5 How many bags of cement do I need for 1 yard?
- 6 How many bags of cement do I need for 100 square feet?
- 7 How many bags of concrete do I need for a 10×20 slab?
- 8 How many yards of concrete do I need for a 10×10 slab?
- 9 How much is 4 yards of concrete cost?
- 10 Can you pour concrete directly on dirt?
- 11 Is it cheaper to pour concrete yourself?
- 12 Should you put plastic under concrete?
- 13 How much area does a 50 lb bag of quikrete cover?
- 14 How much area does a yard of concrete cover?
- 15 How many bags of concrete do I need for a post hole?

## How do I figure out how many yards of concrete I need?

**How do I calculate how much concrete I need for a slab?**

- Measure the area in feet.
- Multiply length by width, and then by thickness.
- Divide the resulting number by 27 to
**find**cubic**yards**.

## How many square feet is a yard of concrete 3 inches thick?

One Cubic Yard = 27 Cubic Feet Length x Width = Square Feet

1 YD | 3 YD | |
---|---|---|

Depth | ||

3 Inches | 108 sq.ft. | 324 sq.ft. |

4 Inches | 81 sq.ft. |
243 sq.ft. |

5 Inches | 65 sq.ft. | 195 sq.ft. |

## How much does it cost to pour a 30×50 slab?

Concrete Slab Cost Calculator

Size (in feet) | Approximate Cost |
---|---|

30×40 | $7,200 |

30×50 | $9,000 |

40×40 | $9,600 |

40×60 | $14,400 |

## How many 80 lb bags of concrete are in 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**.

## How many bags of cement do I need for 1 yard?

# It takes approximately 5 **Bags** of Portland **cement**, 8 cubic ft of sand, and 20 cubic ft of gravel to make approximately **1** cubic **yard** (27 cubic feet) of concrete.

## 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 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 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 much is 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 |

## Can you pour concrete directly on dirt?

Long story short, yes **you can pour concrete** over **dirt**.

## Is it cheaper to pour concrete yourself?

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.

## Should you put plastic under concrete?

Recently, though, research has shown that the old traditional layer of 6-mil Visqueen (polyethylene **plastic**) **under** the **slab** is seldom effective for two main reasons: Although it may seem water-tight, this grade of material allows a lot of water vapor to pass through.

## How much area does a 50 lb bag of quikrete cover?

One **50-pound bag of Quikrete** Fast Setting **Concrete** Mix yields about. 375 cubic feet. For example, if you need to **cover** 33.333 cubic feet, using 60-**pound** bags of **concrete**, divide 33.333 cubic feet by. 45 cubic feet to get 74.07 total bags of **concrete**.

## How much area does a yard of concrete cover?

One Cubic Yard of Concrete: 4-inches thick – covers 81 **square feet**.

## How many bags of concrete do I need for a post hole?

Mix two 50lb **bags of concrete** with water in a mixing tub or 5-gallon bucket. Add **concrete** into the **hole** and around the 4” x 4”. Depending on your climate, let **concrete** set up for 24 – 48 hours.