So quite often you load water for ballast.

They ended up swimming through ballast water that had oil in it.

Well, in a balloon it's easy, we have ballast.

And we found it in the concrete.

Lastro is a municipality in the state of Paraíba in the Northeast Region of Brazil.

Because when tankers carry oil they have to have ballast at some point, so when they're empty, they have the ballast water in there.

The crew of U 103 blew her ballast tanks, scuttled and abandoned the submarine.

And when we drop the ballast overboard we climb.

When they come back, they actually dump this oily ballast water into the ocean.

Let's make it concrete.

They wanted concrete answers.

He's building this huge concrete place.

The first human ballast that was established here was composed of nationals, in the year of 1877.

We tried in the water without any skin or ballast just to see how it works.

It's like mushrooms coming through concrete.

He broke up the concrete block with a hammer.

He broke up the concrete block with a hammer.

This type of concrete has never been used in Singapore.

Special mixes of concrete are made to withstand the extreme pressures of the massive building weight as is typical with reinforced concrete construction, each batch of concrete used was tested to ensure it could withstand certain pressures.

It's really a question of the system, how the ship was loaded, the ballast and many other things.

We removed 123,000 tons of concrete only from the riverbanks.

All of these buildings are made out of reinforced concrete and brick.

In total, the tower contains of concrete, all of which was mixed on site in order to ensure batch consistency.

No, the pioneer is the one who allows himself to throw overboard a lot of ballast.

I'll show you something a little more of a concrete example here, as this thing loads.

So I've invented it in concrete, because it doesn't really matter.

The existence of a concrete model proves the consistency of a system.

Completed in 1997, it is the tallest concrete building in the world.

Concrete plants, conveyors, degrees, loaders and shuttle were tested.

So The hut was made of corrugated metal, set on a concrete pad.

The walls are 700 millimeters thick of solid dense concrete.

The hydrostatic effect of variable ballast tanks is not the only way to control the submarine underwater.

The question I leave you with now is which is the ballast you would like to throw overboard?

Often, the actual weight of the car is lower, so ballast is used to bring it up to the minimum.

Concrete Research http www.concreteresearch.org Timeline of concrete

Things sound and tactile sensations a poetry of concrete.

Concreto Armado, Arquitetura Moderna, Escola Carioca levantamentos e notas.

Most of the world's airports are owned by local, regional, or national government bodies.

The services sector, including tourism, contributes almost 80 to GDP and employs more than 70 of the labor force.

Generating station and dam The total length of the dam is 7235 m. The crest elevation is 225 m. Itaipu is actually four dams joined together from the far left, an earth fill dam, a rock fill dam, a concrete buttress main dam, and a concrete wing dam to the right.

Fires are less frightening today than they once were, because more and more houses are built of concrete, and concrete houses do not burn as easily as the old wooden ones.

Then you come up in this glass elevator right near the curtain wall.

Concrete Sand is often a principal component of this critical construction material.

All the furniture was made of concrete and none of it could be moved.

However, all the families were resettled in houses of the same size and in concrete.