Sizing

What Size Dumpster Do I Need? An Honest Johnstown Guide

Most sizing guides lead with cubic yards. Around here the more useful question is whether the truck can get to your driveway at all.

Why cubic yards is the wrong question

Every dumpster sizing guide opens the same way: a 10 yard holds ten cubic yards, a 20 yard holds twenty. True, and almost completely useless, because nobody standing in their cellar looking at forty years of accumulated stuff can convert that into cubic yards.

What we actually ask on the phone is three questions. What are you throwing away? How much of it, in terms you can picture — pickup loads, rooms, squares of roof? And where exactly is it going to sit? In most towns that third question is a formality. In Johnstown it is often the one that decides the answer.

The two constraints: volume and weight

Every container has two limits and you will hit one of them first. Volume is the obvious one: the box is only so big and you cannot legally load above the top rail. Weight is the one people forget, and it is the one that costs money.

Each size comes with an included tonnage. A 10 yard typically includes one to two tons, a 30 yard four to five. Go over and you pay a per-ton overage rate, which we quote before you book.

What each size really holds

10 yard — 12 ft × 8 ft × 3.5 ft

Three to four pickup loads. One to two tons included. The small-job container and, more importantly, the heavy material container. A bathroom gut. A porch slab. Broken concrete, brick and stone. Low three-and-a-half-foot sides mean you can throw material over the wall without a ramp — which matters more than usual here, because on a tight lot you may be loading from a narrow side yard.

15 yard — 16 ft × 8 ft × 4 ft

Five to six pickup loads. Two to three tons. The most under-used size in the industry and, in this market, the one we place most often. The valley boroughs — Ferndale, East Conemaugh, Franklin, South Fork, most of Windber — were built on short single-width drives, and a 15 yard is sixteen feet against a 20 yard's twenty-two.

20 yard — 22 ft × 8 ft × 4.5 ft

Seven to eight pickup loads. Three to four tons. The standard container almost everywhere else, and the right answer across Richland, Geistown and the newer development where driveways are generous.

30 yard — 22 ft × 8 ft × 6 ft

Ten to twelve pickup loads. Four to five tons. Same footprint as the 20 with eighteen more inches of height, so it holds half again as much without needing any more driveway. The builder's container, and the right call for a barn coming down out toward Davidsville or Somerset.

Worked examples from real valley jobs

The weight traps in mill-town housing

Plaster and lath

The big one. Pre-1950 housing across the valley boroughs, Westmont, Windber and most of the older city is plaster on wood lath, not drywall, and plaster is dramatically heavier. A room that would be a comfortable half-container of drywall is at its weight allowance in plaster.

Coal-era construction

Company-built housing from the coal and steel years used real dimensional lumber, often stone foundations and frequently a coal cellar underneath. All of it heavier than the modern equivalent.

Concrete, brick and stone

Roughly 4,000 pounds per cubic yard. A single cubic yard of broken slab weighs about as much as a small car.

Anything from a cellar that has taken water

This valley has flooded — 1889, 1936, 1977 — and low-lying cellars still take water in a hard rain. Saturated carpet, panelling, drywall and framing weigh a multiple of their dry equivalent. Say so when you book.

Snow in an open container

A Laurel Highlands winter puts real weight into an open container, and once it compacts and refreezes you pay to haul it. Keep it covered. More on winter rentals here.

The hillside usually decides

This is the part that is genuinely different about working here, and it is why we ask about placement before we ask about volume.

Johnstown sits in a steep valley with boroughs on the hills above it. That produces three constraints that most markets do not have at once:

• Grade. A container has to sit level enough to be loaded and hauled safely. A driveway that drops sharply from the street can rule out a placement that would be fine on the flat.
• Narrow streets and alleys. Much of the valley building predates cars being large. The truck needs room to line up, not just room to park.
• Tree canopy. Westmont's elm-lined streets are beautiful and they are also a twenty-two-foot clearance problem — that is roughly what the truck bed needs to raise and roll a container off.

Which is why we sometimes say a 15 yard with one swap is the right answer even though a 20 would hold the job. A container that cannot be placed is worth nothing. More on hillside access here.

Two smaller containers vs one big one

On larger jobs this is frequently the cheaper route, and almost nobody asks about it.

Disposal is priced by stream. Mixed construction and demolition debris costs the most per ton. Clean inert material — concrete, brick, stone — is cheaper. Scrap metal has positive value, and locally the City keeps a list of businesses that take it.

So on a clearance producing concrete, metal and general debris, splitting the load will often cost less in total than one mixed 30 yard, even after paying for the extra movement.

The test is whether you have enough of a clean stream to justify it. Half a container of clean concrete, yes. A wheelbarrow full, no.

How to describe your job on the phone

• What the material is. "Kitchen cabinets, countertop, appliances and about 200 square feet of tile floor" tells us everything.
• Whether it is plaster or drywall. It genuinely changes the container.
• Roughly when the house was built. Coal and steel era material is much denser.
• Where it will sit, and how steep the drive is. The single most useful thing you can tell us here.
• Whether the cellar has ever taken water. It changes the weight answer.
• Which borough or township. The rules change at every line.

That is a ninety-second conversation and it is the difference between a flat rate that holds and a truck that has to leave again.