A standard ready mix truck holds about 8 to 11 cubic yards, and most run 9 or 10 because axle weight limits bite before the drum is full. Ready mix comes from a concrete supplier rather than a rental yard, so the useful answer here is the second half of the question: how much hired kit you need on the ground to move and finish that much concrete before it goes off.
The drum is bigger than the legal load
Mixer drums are typically rated near 10 or 11 cubic yards, but the truck has to be road legal when loaded, so the delivered figure usually lands at 8 to 10. On tight sites, and in states with lower axle limits, a supplier may split one pour across two smaller loads, which changes both the sequence and the kit.
Small pours are priced differently
Anything under about 3 cubic yards is normally a short load with a surcharge, because the truck is tied up either way. That is the point where a hired towable mixer and bagged material starts to compete for a footing, a shed base or a run of posts, though all the labour then belongs to you.
Getting the load to where it goes
A truck chute reaches perhaps 10 to 15 feet past the drum, so anything further needs help. Powered concrete buggies carry a fraction of a yard a trip and hire by the day. Beyond that, or over an obstacle, a line pump or a boom pump arrives with an operator and is priced hourly with a setup charge.
The clock the driver is counting
Suppliers allow a set unloading time per load and bill waiting time after it, and the mix begins to stiffen within a couple of hours of batching. Have the screed, the vibrator, the float and the crew standing before the truck arrives, because hired kit is cheap next to a load going hard in the drum.
Questions people ask about how much concrete does a truck hold
How many cubic yards is a full concrete truck?
About 8 to 11, with 9 or 10 the normal delivered figure. Calculate your volume, add a little for spillage and uneven subgrade, and give the supplier the total. Adding a short load is easier and cheaper than sending concrete back in the drum.
What can I hire to move concrete on site?
Powered buggies for short runs, a line pump and hose to reach a back garden or a basement, and a boom pump when the concrete has to go up or over. Buggies come from the rental counter; pumps almost always arrive with their own operator.
Can I mix that much myself?
Not sensibly. A hired towable mixer turns out a few cubic feet at a time and suits footings, posts and small pads. A single cubic yard is roughly forty to fifty bags of mix, so a full truck load is far beyond what a crew mixes by hand in a day.