Are you acquiring ready to develop a deck, sidewalk, patio, or BBQ pit? need to number out how many bags of concrete for article holes or sonotube footings? depending upon how large your project and where it’s located, it might be easier and also cheaper come mix your very own than order ready-mix. So, if you trying to figure out how numerous bags the concrete in a yard for your project, this overview is for you.

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

In this guide, we’ll comment on how numerous square feet room in a yard of concrete, different weights of bagged concrete, cubic feet per bag, the variety of bags that consist of a yard, and also how numerous bags ~ above a pallet. We’ll also explain just how to calculate the amount of concrete you’ll need for a slab, fence post, or sonotube, to add what the dry load of a yard runs. This is the ultimate guide for deciding even if it is ready-mix or bagged concrete is best for her project.


Sonotube footings for decks frequently have a deck anchor put into the concrete rather of a section of the post, therefore they are totally filled with concrete. Calculation the volume the the sonotube making use of its radius and length or depth it is sunk into the soil (v = π r²h wherein pi or π = 3.14). The table below indicates the amount of concrete required for various diameters of 4-foot sonotube lengths.

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

(or 3 bags and 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 yard of Concrete Weigh

A yard of concrete is composed of cement, sand, and rock or gravel, otherwise well-known as aggregates. The dry content is bagged and shipped on pallets. Various grades or toughness use various ratios in the blend, leading to varying weights per yard. The load of water added is about fifty percent the load of the cement proportion in the mix.

It bring away sixty 60lb or forty-five 80lb bags of 4000psi concrete mix to make a garden of concrete. Mathematically, 60×60 = 3600lbs and also 45×80 = 3600lbs, so a dried cubic garden of concrete mix would certainly weigh 3600lbs. Adding water to the mix rises the median weight to around 4000lbs.

Depending ~ above the manufacturer, the proportion of actions to make the concrete mix, elevations, and also temperatures, a yard of concrete might need in between 27 and also 35 (or more) US-gallons the water. A us gallon of water weighs 8.34lbs, for this reason the variety of gallons rises the weight accordingly.

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

How countless Yards the Concrete in a Truck

The lot of weight a truck can bring depends on what that is designed to carry. Some components affecting tons are whereby it is traveling and also when. Hills and bridges can restrict fill sizes, and also weight constraints may vary between jurisdictions and even seasonally. Additionally, statutory us weight boundaries of 80,000 pounds ~ above tractor-trailers restrict loads to in between 43,000 and 47,000 pounds, as perform 48,000 pounds top top 3-axle cement trucks.

On typical most ready-mix concrete trucks bring 10.5 yards or 42,000 pounds, return some lug 12.5 yards. A 48’ tractor-trailer frequently carries 14 yards, shipment trucks 2 to 3 yards, and also a half-ton truck around a 3rd of a garden of dried mix.

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