# Question: How Much Does A 80lb Bag Of Concrete Cover?

## Do I need gravel under concrete?

Whether you pour concrete for a walkway or patio, a strong gravel base is required to prevent the concrete from cracking and shifting.

Gravel is especially important in clay soil because it doesn’t drain well, which results in water pooling under the concrete slab and slowly eroding the soil as it finally drains..

## How many 60lb bags of concrete make a yard?

40 pound bag yields .011 cubic yards. 60 pound bag yields .017 cubic yards. 80 pound bag yields .022 cubic yards.

## How many square feet does an 80lb bag of concrete cover?

4 sq feet in that amount of cement.

## How many 80lb bags of concrete make a yard?

An 80# bag of pre-mixed cement, sand and gravel (CONCRETE) is 0.6 cubic foot per the bag. There are 27 cubic feet in a cubic yard. So 27 / 0.6 = 45 80# bags.

## How much water is needed for a 80lb bag of concrete?

Measure the recommended water amount (each 80-pound bag of concrete mix will require about 3 quarts of water). Pour approximately 2/3 of the water into the depression.

## How many 80lb bags of quikrete does it take to make a yard?

# It takes approximately 5 Bags of Portlandcement, 8 cubic ft of sand, and 20 cubic ft of gravel tomake approximately 1 cubic yard (27 cubic feet) ofconcrete.

## Is quikrete as strong as concrete?

Simple answer is yes, if you follow the directions. If you are say patching a hole in the driveway, the Quikrete 5000 will reach a compressive strength at 28 days as high or higher than what you are likely to get from a ready mix plant. They are usually delivering 3500 -4000 PSI concrete.

## Can you mix cement in a 5 gallon bucket?

Step 1: Mixing Concrete by Hand. For smaller projects, 30 lbs. or less, mixing the concrete by hand is pretty easy. It can be mixed in a 5 gallon bucket, a wash tub, or on a plastic sheet or a tarp. When you’re getting your hands in the mix like this, be sure to wear thick gloves.

## How many bags of concrete can you put in a mixer?

More than one wheelbarrow load mixed at a time could cause problems if owners work alone. To pour a 24-square-foot section of sidewalk 6 inches thick requires 20 80-pound bags of ready-mix, about five safe mixer loads.

## How much does a yard of concrete cover 4 inches thick?

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

## Should you put plastic under concrete?

Vapor retarders have been used since the 1950s. 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.

## What happens if you pour concrete on dirt?

Unfortunately, if you have clay-heavy soil, then you may run into difficulty when pouring a slab. The clay can compress under the weight of the concrete, causing the slab to shift or sink over time. It also can leach moisture from the concrete itself, resulting in uneven curing and a brittle base.

## How many bags of concrete do I need for a 4×4 post?

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”.

## How thick should a concrete driveway be?

four inchesAs for thickness, non-reinforced pavement four inches thick is standard for passenger car driveways. For heavier vehicles, a thickness of five inches is recommended. To eliminate standing water, the driveway should be sloped towards the street a minimum of one percent, or 1/8 inch per foot, for proper drainage.

## Can I mix quikrete in the hole?

Pour the QUIKRETE® Fast-Setting Concrete Mix dry from the bag into the hole until it reaches 3 to 4″ from the top. Pour water onto the dry mix and allow it to soak in. … This will take about one gallon of water for each 50 pound bag depending on soil conditions.

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

5 Bags# 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.

## Can you pour concrete directly on dirt?

No, Because concrete slabs “float” on the soil, soft ground or voids underneath may cause unsupported areas to crack under heavy weight like vehicles. Pack about 4 in. of sand or gravel over clay and other poorly draining soils to provide even support.