Are you acquiring ready to build a deck, sidewalk, patio, or BBQ pit? require to number out how countless bags the concrete for post holes or sonotube footings? relying on how big your project and where that located, it may be easier and also cheaper to mix your very own than stimulate ready-mix. So, if you trying to figure out how countless bags of concrete in a yard for her project, this guide is because that you.

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

In this guide, we’ll discuss how numerous square feet space in a garden of concrete, various weights of bagged concrete, cubic feet every bag, the number of bags that comprise a yard, and also how plenty of bags ~ above a pallet. We’ll likewise explain exactly how to calculate the quantity of concrete you’ll require for a slab, fence post, or sonotube, plus what the dry weight of a garden runs. This is the ultimate overview for deciding even if it is ready-mix or bagged concrete is finest for your project.


Sonotube footings for decks frequently have a deck anchor placed into the concrete instead of a section of the post, for this reason they are completely filled through concrete. Calculate the volume the the sonotube utilizing its radius and also length or depth that 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 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 absent 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 garden of Concrete Weigh

A garden of concrete is written of cement, sand, and stone or gravel, otherwise recognized as aggregates. The dry content is bagged and shipped ~ above pallets. Different grades or strengths use various ratios in the blend, bring about varying weights every yard. The load of water included is about fifty percent the weight of the cement ratio in the mix.

It take away 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 yard of concrete mix would weigh 3600lbs. Adding water come the mix boosts the mean weight to about 4000lbs.

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

Water is required for the chemistry reaction come harden the flour mix. However, although the doesn’t adjust the all at once finished volume much, that does change the early weight. Together the concrete cures, lot of the water evaporates, to reduce the load to about 3700lbs.

How countless Yards of Concrete in a Truck

The amount of load a van can bring depends ~ above what that is designed to carry. Some determinants affecting tons are whereby it is traveling and when. Hills and also bridges have the right to restrict fill sizes, and also weight restrictions may vary between jurisdictions and even seasonally. Additionally, statutory united state weight borders of 80,000 pounds top top tractor-trailers restrict lots to in between 43,000 and 47,000 pounds, as perform 48,000 pounds top top 3-axle cement trucks.

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

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