Question 1

How much does one cubic yard of concrete weigh?

Accepted Answer

A standard cubic yard of solid concrete weighs approximately 4,050 pounds (or about 2 tons). This assumes a standard mix density of roughly 150 lbs per cubic foot.

Question 2

Can I haul a yard of concrete in my pickup truck?

Accepted Answer

Usually, no. A typical half-ton pickup truck (like an F-150, Silverado 1500, or Ram 1500) has a maximum payload capacity of 1,500 to 2,000 pounds. A full yard of wet concrete weighs over 4,000 pounds, which will severely overload the suspension and blow out the tires. You would need a heavy-duty 1-ton truck or a dual-axle equipment trailer to safely legally haul a cubic yard.

Question 3

How many 80lb bags are in a cubic yard of concrete?

Accepted Answer

It takes exactly 45 bags of 80 lb concrete mix to yield one cubic yard of placed concrete. Since there's often spillage and uneven ground, most pros recommend buying 47 or 48 bags to account for a 5% waste factor.

Question 4

What is the difference between standard and lightweight concrete?

Accepted Answer

Standard concrete uses gravel and sand as aggregate, resulting in a density around 150 lbs per cubic foot. Lightweight concrete replaces gravel with expanded shale, clay, or slate, dropping the density to between 90 and 115 lbs per cubic foot. This is often used for suspended floor slabs or roof decks where minimizing dead weight is critical.

Question 5

Why should I add a 5% waste factor when calculating bags?

Accepted Answer

Ground surfaces are rarely perfectly level, forms can bow out slightly under the wet pressure, and some mix is always left behind in the wheelbarrow or mixer. Adding 5% to 10% extra dry material ensures you don't run out halfway through a pour, which can compromise the structural integrity of the slab due to cold joints.

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