Are you gaining ready to develop a deck, sidewalk, patio, or BBQ pit? need to number out how countless bags that concrete for short article holes or sonotube footings? depending on how huge your project and also where it’s located, it might be easier and cheaper come mix your very own than bespeak ready-mix. So, if you’re trying to number out how numerous bags of concrete in a yard for her project, this guide 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 about 3600lbs and also needs 32 come 34 gallons that water. A garden of concrete will make a 4” thick, 81ft² slab.

In this guide, we’ll talk about how many square feet space in a yard of concrete, different weights the bagged concrete, cubic feet per bag, the variety of bags that comprise a yard, and also how numerous bags on a pallet. We’ll also explain just how to calculate the lot of concrete you’ll need for a slab, fence post, or sonotube, add to what the dry weight of a yard runs. This is the ultimate guide for deciding whether ready-mix or bagged concrete is ideal for your project.


Sonotube footings for decks often have a deck anchor placed into the concrete instead of a portion of the post, so they are fully filled through concrete. Calculate the volume that the sonotube using its radius and also length or depth that is sunk into the soil (v = π r²h wherein pi or π = 3.14). The table listed below indicates the lot of concrete necessary for different diameters the 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 garden of concrete is created of cement, sand, and rock or gravel, otherwise recognized as aggregates. The dry content is bagged and shipped top top pallets. Various grades or strengths use various ratios in the blend, resulting in varying weights every yard. The weight of water added 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 do a yard of concrete. Mathematically, 60×60 = 3600lbs and 45×80 = 3600lbs, therefore a dried cubic garden of concrete mix would weigh 3600lbs. Adding water come the mix rises the mean weight to around 4000lbs.

Depending top top the manufacturer, the proportion of actions to do the concrete mix, elevations, and also temperatures, a yard of concrete might need between 27 and 35 (or more) US-gallons that water. A united state gallon the water weighs 8.34lbs, therefore the number of gallons rises the weight accordingly.

Water is required for the chemical reaction to harden the powder mix. However, although that doesn’t change the overall finished volume much, the does change the early weight. Together 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 weight a truck can carry depends on what it is designed come carry. Some factors affecting tons are wherein it is traveling and when. Hills and also bridges deserve to restrict load sizes, and weight constraints may vary between jurisdictions and even seasonally. Additionally, statutory united state weight boundaries of 80,000 pounds ~ above tractor-trailers restrict lots to between 43,000 and also 47,000 pounds, as perform 48,000 pounds top top 3-axle cement trucks.

On typical most ready-mix concrete trucks carry 10.5 yards or 42,000 pounds, return some lug 12.5 yards. A 48’ tractor-trailer often carries 14 yards, distribution trucks 2 come 3 yards, and also a half-ton truck about a 3rd of a yard of dry mix.

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To identify your vehicle’s delivering 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 pack capacity of 1500lbs, including the driver, passengers, and cargo. It isn’t recommended come exceed the pack capacity.