Are you acquiring ready to build a deck, sidewalk, patio, or BBQ pit? require to number out how countless bags that concrete for post holes or sonotube footings? depending on how huge your project and also where the located, it may be easier and cheaper to mix your own than order ready-mix. So, if you’re trying to number out how many bags that concrete in a yard for your project, this overview is for you.

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To mix a yard of 4000psi concrete you’ll need ninety 40lb, seventy-two 50lb, sixty 60lb, forty-five 80lb, or fourty 90lb bags the mix. A dry garden of concrete weighs about 3600lbs and needs 32 come 34 gallons the water. A yard of concrete will certainly make a 4” thick, 81ft² slab.

In this guide, we’ll discuss how countless square feet space in a garden of concrete, different weights the bagged concrete, cubic feet per bag, the number of bags that make up a yard, and also how numerous bags on a pallet. We’ll also explain exactly how to calculation the amount of concrete you’ll need for a slab, fence post, or sonotube, add to what the dry load of a yard runs. This is the ultimate guide for deciding whether ready-mix or bagged concrete is best for your project.


Sonotube footings because that decks often have a deck anchor inserted into the concrete rather of a section of the post, so they are completely filled with concrete. Calculation the volume that the sonotube using its radius and length or depth it is sunk right into the soil (v = π r²h whereby pi or π = 3.14). The table listed below indicates the quantity of concrete necessary for various diameters that 4-foot sonotube lengths.

Concrete because that Sonotube Deck Footings
Sonotube DiameterVolume60lb Bag (0.45ft³)80lb Bag (0.6ft³)
8” x 4ft1.393ft³3.1 or 4 bags

(or 3 bags and also a rock or two)

2.32 or 3 bags
10” x 4ft2.181ft³4.84 or 5 bags3.635 or 4 bags
12” x 4ft3.14ft³6.98 or 7 bags5.23 or 6 bags

How much Does a garden of Concrete Weigh

A yard of concrete is created of cement, sand, and stone or gravel, otherwise recognized as aggregates. The dry contents is bagged and shipped on pallets. Different grades or strengths use different ratios in the blend, bring about varying weights every yard. The weight of water added is about half the load of the cement ratio in the mix.

It take away sixty 60lb or forty-five 80lb bags of 4000psi concrete mix to make a yard of concrete. Mathematically, 60×60 = 3600lbs and also 45×80 = 3600lbs, therefore a dried cubic garden of concrete mix would certainly weigh 3600lbs. Including water come the mix increases the median weight to about 4000lbs.

Depending on the manufacturer, the proportion of steps to do the concrete mix, elevations, and temperatures, a garden of concrete may need between 27 and also 35 (or more) US-gallons that water. A us gallon that water weighs 8.34lbs, therefore the number of gallons boosts the weight accordingly.

Water is required for the chemistry reaction to harden the flour mix. However, although that doesn’t readjust the as whole finished volume much, the does adjust the early stage weight. As the concrete cures, lot of the water evaporates, reducing the weight to roughly 3700lbs.

How numerous Yards the Concrete in a Truck

The quantity of load a van can lug depends ~ above what that is designed to carry. Some factors affecting tons are where it is traveling and also when. Hills and also bridges deserve to restrict load sizes, and weight restrictions may vary in between jurisdictions and even seasonally. Additionally, statutory united state weight boundaries of 80,000 pounds on tractor-trailers restrict lots to between 43,000 and 47,000 pounds, as do 48,000 pounds top top 3-axle cement trucks.

On median most ready-mix concrete trucks bring 10.5 yards or 42,000 pounds, back some carry 12.5 yards. A 48’ tractor-trailer frequently carries 14 yards, distribution trucks 2 come 3 yards, and also a half-ton truck about a third of a garden of dry mix.

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To recognize your vehicle’s transporting capacity, identify the GVWR and subtract that is curb weight. A 1/2-ton truck through a 6600lb GVWR and a curb weight of 5100lbs, has actually a pack capacity the 1500lbs, including the driver, passengers, and cargo. It no recommended to exceed the pack capacity.