Post Hole Concrete Calculator. Calculate how many yards or how many bags of concrete are needed for a set of post holes by entering the post diameter and hole size. ... 0.3826 – 0.1336 = 0.2490 cubic ft. per post. TOTAL volume concrete: 0.2490 cubic ft x 20 posts = 4.9807 cubic ft.

The surface area of a concrete slab or sand base is directly affected by its thickness. In the photo, you see two examples of a measured cubic foot.Since a cubic foot is measured by Length x Width x Thickness, a cube 1-foot long x 1-foot wide x 1 foot thick is therefore 1 cubic foot.

Oct 24, 2008· 5 bags per yard would equal 5.4 cu feet per bag (27/5) Which would be .18 bags of concret per cubic foot (1/5.4) and 17lb per cubic foot (.18*92) I have never been the one doing the measurments for concrete, so my question is is the 3:2:1 ratio by weight or by volume.

QUIKRETE Concrete Mix is designed for pouring concrete 2" (51 mm) thick or more and building or repairing anything out of concrete, ... Combined Materials for Mortar and Concrete Note L) of water per 80 lb ... • Allow at least 1 cu ft (28 L) of mixer capacity for each 80 lb (36.3 kg) ...

Multiply the length (10 ft.) by the width (10 ft.) by the depth (.35 ft., or 4 in.) and divide it by 27 (the number of cubic feet in a cubic yard). You get 1.3 cu. yds. Then add 10 percent to allow for spillage and slab depth variations to help determine the concrete cost per …

Weight of the concrete per volume of concrete. Automatic calculator for the specific unit weight of a volume of concrete in pcf, lb/ft^3, lb/yd^3, kg/m3, fresh wet concrete mix and dry cured hardened concrete. Weighing concrete in tonnes per cubic meter or kilograms kg, lb pounds per cubic foot or yd yards. Online convert and calculate how heavy is any volume of normal concrete 150 lbs/ft^3 ...

Concrete pricing is typically quoted per cubic yard or cubic meter (metre). For an average estimating number, you can use $77 per cubic yard. ... On average, formwork can be priced at $1.10 per square foot of the concrete area. This estimate is for a square or rectangular area. Concrete that is rounded or contoured may require costlier formwork.

Quickly calculate concrete slab and footing pours by entering the depth, width and length to find the number of cubic yards or bags of concrete needed for your project. Give these calculations to your ready-mix supplier or use them to estimate how many 40, 60 or 80 lb. bags of concrete to buy.

By standard practice, when freshly poured, Portland cement has unit volume mass of 94 lbs/cu-ft - 1506 kg/m3 (but it becomes denser as the storage time is prolonged, when it gets compressed or vibrated; in such situations its weight per volume can increase to as high as 104 lbs/cu-ft).

Pre-mixed concrete is usually sold by the cubic yard and this is the volume unit we use by default, but construction elements are usually measured in feet. Therefore our calculator shows the volume in cubic yards - in our example 0,23 cu yd. 4 cubic yards equals 6,28 cubic feet.

All concrete is estimated in cubic yards (one cubic yard = 27 cubic feet). For large concrete jobs - four cubic yards or more - the concrete should be delivered by a ready-mix truck. It's also possible to haul fresh concrete to your site in special two-cubic-yard trailers provided by concrete producers.

An 80-pound bag of concrete makes 0.6 cubic feet. A cubic foot of any material is enough to fill a box that is 1 foot wide, 1 foot tall and 1 foot long. In order to determine the volume of concrete required for a project, a worker must determine the surface area and thickness of the concrete. He ...

Concrete is a material comprised of a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, and slag) bonded with cement. Cement is a substance that is used to bind materials, such as aggregate, by adhering to said materials, then hardening over time. While there ...

Multiply the length (10 ft.) by the width (10 ft.) by the depth (.35 ft., or 4 in.) and divide it by 27 (the number of cubic feet in a cubic yard). You get 1.3 cu. yds. Then add 10 percent to allow for spillage and slab depth variations to help determine the concrete cost per yard.

According to the table above, one cubic yard of concrete placed at a thickness of 5-inches covers 65 square feet. In a perfect universe, our 1,080 square foot driveway will need exactly 16.62 cubic yards of concrete (1,080 square feet / 65 square feet equals 16.62 cubic yards).

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