Are you getting ready to develop a deck, sidewalk, patio, or BBQ pit? need to number out how numerous bags of concrete for write-up holes or sonotube footings? depending upon how large your project and also where the located, it may be easier and cheaper come mix your very own than stimulate ready-mix. So, if you trying to number out how countless bags the concrete in a garden for your project, this guide is because that you.

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

In this guide, we’ll discuss how many square feet are in a garden of concrete, different weights the bagged concrete, cubic feet every bag, the number of bags that make up a yard, and how numerous bags ~ above a pallet. We’ll likewise explain just how to calculate the quantity of concrete you’ll need for a slab, fence post, or sonotube, to add what the dry weight of a yard runs. This is the ultimate guide for deciding even if it is ready-mix or bagged concrete is ideal for her project.


Sonotube footings for decks frequently have a deck anchor placed into the concrete rather of a section of the post, therefore they are fully filled through concrete. Calculation the volume that the sonotube making use of its radius and length or depth the is sunk into the floor (v = π r²h wherein pi or π = 3.14). The table below indicates the lot of concrete required for different diameters of 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 garden of concrete is composed of cement, sand, and stone or gravel, otherwise recognized as aggregates. The dry contents is bagged and also shipped top top pallets. Different grades or staminas use different ratios in the blend, causing varying weights every yard. The load of water included is about half the weight of the cement ratio 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 45×80 = 3600lbs, so a dried cubic garden of concrete mix would certainly weigh 3600lbs. Adding water to the mix boosts the average weight to roughly 4000lbs.

Depending ~ above the manufacturer, the ratio of steps to make the concrete mix, elevations, and temperatures, a yard of concrete may need between 27 and 35 (or more) US-gallons that water. A us gallon of water weighs 8.34lbs, so the variety of gallons increases the load accordingly.

Water is required for the chemistry reaction come harden the powder mix. However, although that doesn’t readjust the in its entirety finished volume much, the does change the early weight. Together the concrete cures, lot of the water evaporates, reducing the load to approximately 3700lbs.

How countless Yards of Concrete in a Truck

The lot of weight a van can carry depends ~ above what the is designed come carry. Some factors affecting tons are wherein it is traveling and when. Hills and bridges deserve to restrict fill sizes, and weight restrictions may vary between jurisdictions and even seasonally. Additionally, statutory united state weight limits of 80,000 pounds ~ above tractor-trailers restrict lots to between 43,000 and also 47,000 pounds, as execute 48,000 pounds ~ above 3-axle cement trucks.

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

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To determine your vehicle’s transporting capacity, recognize the GVWR and subtract that curb weight. A 1/2-ton truck through a 6600lb GVWR and also a curb weight of 5100lbs, has a fill capacity of 1500lbs, consisting of the driver, passengers, and cargo. It isn’t recommended to exceed the fill capacity.