Are you gaining ready to develop a deck, sidewalk, patio, or BBQ pit? require to figure out how many bags the concrete for write-up holes or sonotube footings? relying on how big your project and also where that located, it may be easier and cheaper to mix your very own than order ready-mix. So, if you trying to figure out how many bags of concrete in a yard for your project, this overview is because that 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 forty 90lb bags of mix. A dry yard of concrete weighs around 3600lbs and also needs 32 to 34 gallons that water. A yard of concrete will make a 4” thick, 81ft² slab.

In this guide, we’ll discuss how many square feet are in a garden of concrete, various weights that bagged concrete, cubic feet per bag, the variety of bags that comprise a yard, and how plenty of bags ~ above a pallet. We’ll likewise explain just how to calculation the quantity 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 even if it is ready-mix or bagged concrete is best for her project.


Sonotube footings because that decks frequently have a deck anchor placed into the concrete instead of a portion of the post, therefore they are completely filled with concrete. Calculate the volume that the sonotube utilizing its radius and also length or depth it is sunk right into the floor (v = π r²h where pi or π = 3.14). The table listed below indicates the lot of concrete needed for different diameters that 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 lot Does a yard of Concrete Weigh

A garden of concrete is created of cement, sand, and rock or gravel, otherwise recognized as aggregates. The dry contents is bagged and shipped top top pallets. Different grades or toughness use various ratios in the blend, causing varying weights per yard. The weight of water included is about fifty percent the weight of the cement ratio in the mix.

It takes sixty 60lb or forty-five 80lb bags the 4000psi concrete mix to make a garden of concrete. Mathematically, 60×60 = 3600lbs and 45×80 = 3600lbs, for this reason a dried cubic yard of concrete mix would certainly weigh 3600lbs. Including water come the mix increases the mean weight to approximately 4000lbs.

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

Water is necessary for the chemical reaction to harden the flour mix. However, although the doesn’t readjust the overall finished volume much, it does adjust the early stage weight. Together the concrete cures, much of the water evaporates, to reduce the load to approximately 3700lbs.

How many Yards of Concrete in a Truck

The lot of load a truck can lug depends on what the is designed to carry. Some components affecting lots are where it is traveling and also when. Hills and also bridges can restrict fill sizes, and weight constraints may vary between jurisdictions and also even seasonally. Additionally, statutory united state weight borders of 80,000 pounds on tractor-trailers restrict loads to between 43,000 and 47,000 pounds, as perform 48,000 pounds on 3-axle cement trucks.

On typical most ready-mix concrete trucks carry 10.5 yards or 42,000 pounds, although some lug 12.5 yards. A 48’ tractor-trailer regularly carries 14 yards, delivery trucks 2 come 3 yards, and a half-ton truck about a 3rd of a garden of dried mix.

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