Your dumpster comes with a tonnage allowance: 2 tons on the 15-yard, 3 on either 20, 4 on the 30. Go past it and it is $60 a ton. The part worth understanding is how the number gets decided, because that is where most people have been burned before.
Every DJP load crosses a certified scale on the way into the transfer station. The scale prints a ticket. That ticket comes back to you with the invoice. You are paying the printed weight, not an estimate, not a guess from the driver, not a rounded-up figure from an office. If the ticket says 3.4 tons on a 3-ton allowance, you owe $24 and you can see why.
That sounds like a small thing and it is the single most common reason people call us back. The complaint about the last company is almost never the price on the website. It is the invoice that arrived with a weight nobody could explain.
Now the practical part: what actually gets you over. Household junk, furniture, drywall, cabinets, carpet, brush. A 20-yard packed level with that mix usually lands inside 3 tons. You would have to work at it to go over.
Heavy material is a different arithmetic entirely. Concrete, brick, asphalt, dirt and roofing shingles run several times the weight of the same volume of household debris. A single square of asphalt shingles is roughly 250 pounds, so a 30-square roof is about 3.75 tons of shingles by itself, which puts a 20-yard past its allowance before you throw in the felt, the nails and the rotten decking. That is not a reason to use a bigger dumpster. Volume is not the constraint on a heavy load, the truck's legal hauling weight is, so a bigger dumpster just gives you room to build a load that cannot leave your driveway.
The right move on heavy material is to say so when you book. Devin plans the tonnage with you: sometimes that is a smaller dumpster filled part way, sometimes it is two lighter loads, sometimes it is a 30 with a hard stop on how high you fill it. What it is never is a surprise on the invoice.
Two habits keep you inside the allowance on a normal job. Break down what you can, because a dismantled cabinet takes a third of the space of a one and weighs the same. And keep the load level with the top rail, since anything above the rail cannot ride on the road and the driver will wait while you pull it down.
The full rate card, including what the extra days and item charges cost, is on the pricing page. If the load is going to be concrete or shingles, the construction debris page and the roofing page get more specific.
There is a second reason the printed ticket matters, and it is about trust rather than arithmetic. A hauler who estimates weight has a financial interest in estimating high, and no way for you to check. A hauler who hands you the transfer station's own ticket has removed the argument entirely. That is why DJP publishes both the allowance and the overage rate rather than quoting weight on the phone and settling up later.
For contractors, which is most of our work, the tickets do a second job as documentation. On a project where debris disposal is a line item you have to substantiate, a printed scale ticket per load is exactly the record you need, and it arrives with the invoice without anybody having to request it.
One habit that saves money on mixed loads: put the heavy material in first, spread across the floor of the dumpster, then build the light material on top. Concrete in one corner and furniture piled on the other side gives you a load that is at weight on one end and empty on the other, which wastes both the volume and the allowance. Spread flat, a mixed load uses everything you paid for.
Call 864-881-DUMP with what the job is and you will get the tonnage conversation before the dumpster shows up.