Packing Up a Building: How Many Trucks Is the Duisburg Archive Tower?

A teammate pointed at a photo of the big red brick tower on the Duisburg Innenhafen and asked the kind of question that makes this job fun: if you broke that whole structure down into half-size pack cases, how many trucks would it fill?

It sounds like a joke, but it is the exact question a load-out answers every single day, just at a saner scale. So we ran the real math. And the honest answer is that "how many trucks" has three different answers depending on one assumption: what you think the building is actually made of.

The short answer, up front

• If the tower were hollow, and you only cared about filling space, it fits in about 1,500 trailers.
• If it were a solid block of brick, it blows past that and needs roughly 15,500 trailers.
• What it actually is, a real building that is mostly air wrapped in dense structure, lands near 2,700 trailers, and it still runs out of weight before it runs out of room.

The rest of this is how we got there, because the gap between those three numbers is the whole lesson.

The building

The tower in the photo is the Landesarchiv NRW, the state archive of North Rhine-Westphalia (it sits in Duisburg, not Düsseldorf, about 30 km up the Rhine). Ortner and Ortner wrapped a 76 meter dark-red brick tower around a listed 1930s grain warehouse and finished it in 2014. The complex runs 200 meters long and encloses 165,000 cubic meters across 21 floors, with room for roughly 148 kilometers of shelving inside.

So: 165,000 cubic meters of building. Let us pack it.

The two anchors

To count trucks you need two numbers, the case and the trailer.

Call a half pack case a road trunk with about 0.15 cubic meters of usable interior (roughly 24 by 20 by 20 inches), the kind of half-size case that stacks two-high into a full one.

For the truck, a 53 foot dry van gives you around 3,900 cubic feet, about 110 cubic meters, of usable space and a legal payload near 45,000 pounds before the rig hits the 80,000 pound gross limit. Those are the two ceilings: cube and weight. You always hit one first.

Answer 1: if it were hollow (cube it out)

Ignore weight and just fill space. 165,000 cubic meters divided by 0.15 cubic meters per case is about 1.1 million half pack cases. Stack them perfectly into 110 cubic meter trailers and you get roughly 1,500 trucks. Nose to tail, that convoy is more than 20 miles long. That is the answer if a building were made of air. It is also the floor, the fewest trucks this could ever take.

Answer 2: if it were solid brick (the naive weight answer)

Now go the other way and assume the tower is a solid brick vault, nothing but masonry all the way through. Brick is brutally heavy: a common red brick runs about 120 pounds per cubic foot, roughly 1,920 kilograms per cubic meter.

Pack one of our half cases solid with brick and it weighs about 640 pounds. At 640 pounds a case you cross the 45,000 pound axle limit at 70 cases, not 700. The trailer floor is barely covered and the rig is already illegal. Run that all the way out and 165,000 cubic meters of solid brick weighs about 317,000 metric tons, which is roughly 15,500 weight-bound trailers, ten times the cube answer, every one of them riding nine-tenths empty.

That is the ceiling. But no building is a solid block of brick, which is the part worth predicting.

Answer 3: what it actually is

A real building is mostly air. The rooms, corridors, stairwells, and the gaps between 148 kilometers of shelving are all volume that holds nothing heavy. The mass lives in a shell of reinforced concrete floors, the brick facade, steel, and foundations. That material is dense, but it fills only a fraction of the 165,000 cubic meters.

How much? A useful real-world yardstick is the Empire State Building: about 331,000 metric tons packed into roughly 1,000,000 cubic meters of enclosed volume, which works out to about 0.33 tons per cubic meter of building. Apply that to our 165,000 cubic meter archive and you get roughly 55,000 metric tons. The Empire State is a lean steel-framed tower, and a brick fortress built to protect documents is heavier per cubic meter, so call the honest range 55,000 to 90,000 tons.

Convert that to trucks and it still weighs out: about 120 million pounds at the low end, or roughly 2,700 trailers, climbing toward 4,000 if you trust the heavier end. Notice where that lands. The realistic number is not the airy 1,500, and nowhere near the solid-brick 15,500. It sits in between, about double the cube floor, and it is still weight-bound, because even "mostly air" buildings are made of the two densest things we truck: concrete and masonry.

The angle everyone forgets: the contents

Here is a bonus the pure-building math misses. This is an archive, and the paper is not free freight. Records people size storage by the running meter, and a running meter of shelved documents weighs about 30 kilograms. At 148 kilometers of shelving that is roughly 4,400 metric tons of paper, about 9.8 million pounds, or another 220 trailers just to move what is on the shelves, before you touch the walls.

And paper behaves exactly like gear: a case packed solid with files weighs out long before it cubes out, which is why records movers count boxes by weight, not volume.

Why the "stupid" question is the whole job

Three answers to one question, and the only thing that changed was your assumption about the contents. That is the fork every tour and every freight load hits. A trailer of LED wall and empty road cases cubes out, filling the space and rolling away light. A trailer of cable, motors, or, yes, brick weighs out, hitting the axle limit with the ceiling still far overhead. Load them the same way and you either pay for empty space or you put an illegal truck on the road.

Knowing which ceiling you are about to hit, before the cases are packed, is the difference between the trucks you booked and the trucks you actually need. Brick weighs out at 70 cases a trailer. Truss and LED cube out at 700. Same trailer, same question, opposite failure.

You are (probably) not shipping a German archive. But you are making this exact call on every load-out, and eyeballing it is how a tour ends up one trailer short at 2 a.m. Truck Packer runs the cube-and-weight math on your real gear so you know the truck count before you are standing in the loading dock, not after.

Even for a 76 meter brick tower. Especially for one.