Quiz: World Trade Center Slurry Wall Quiz
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World Trade Center Slurry Wall Quiz
By: Staff
Image: refer to hsw

About This Quiz

The World Trade Center slurry wall survived the September 11 attacks to become an iconic reminder of a nation's loss and resolve. Test your knowledge of this unique structure with our quiz.

1.0 of 20
When was the World Trade Center slurry wall built?

The slurry wall was built in 1967.

The slurry wall was designed to keep the World Trade Center's basement from flooding.

3.0 of 20
Where was the slurry trench underground wall-building method developed?

The slurry trench method for building an underground wall was developed in Italy.

4.0 of 20
When was the slurry trench method developed?

The slurry trench method was developed in the late 1940s.

5.0 of 20
Where was the first proposed location of the World Trade Center?

The first proposed location of the World Trade Center was on the Lower East Side.

6.0 of 20
What organization built the World Trade Center?

The Port of New York Authority built the World Trade Center.

7.0 of 20
How thick is the original World Trade Center's slurry wall?

The slurry wall is 3 feet (0.9 meters) thick.

8.0 of 20
What were the ingredients of the slurry used in the slurry trench?

Clay and water were the ingredients in the slurry.

9.0 of 20
The consistency of the slurry is usually compared to what?

The consistency of the slurry usually is compared to buttermilk.

10.0 of 20
The site of the World Trade Center was what sort of land?

The World Trade Center was built on a landfill.

11.0 of 20
What was the name of the neighborhood where the World Trade Center was built?

The neighborhood where the Twin Towers were built previously was known as Radio Row.

12.0 of 20
Where did the clay used in the slurry wall come from?

The clay used in the slurry wall came from Wyoming.

13.0 of 20
What was the purpose of the slurry used in the slurry trench dug by the World Trade Center's builders?

The slurry was used to keep water from seeping into the trench and collapsing its walls.

14.0 of 20
How deep was the slurry trench dug?

At the deepest point, the slurry trench reached down about 80 feet (24 meters) into the bedrock.

15.0 of 20
After the slurry trench was finished, what was pumped into the trench?

After the trench was completed, concrete was pumped into the trench to form the actual wall.

16.0 of 20
How much was budgeted to preserve and restore the slurry wall for the September 11 museum?

The museum construction budget allocated $11 million for preserving and restoring the wall.

17.0 of 20
How much of the original slurry wall was included in the museum project?

Three 20-foot-wide (6-meter-wide) panels of the wall were included.

18.0 of 20
What now supports the slurry wall from the interior?

Steel cables now support the slurry wall from the interior, instead of the Twin Towers' basement.

19.0 of 20
What was applied to the slurry wall's surface to preserve it for museum visitors?

A thin layer of concrete called "shotcrete" was applied to the wall's surface to preserve it.

20.0 of 20
What might have been endangered had the slurry wall given way during the September 11 attacks?

If the slurry wall had collapsed, New York's subways might have flooded.

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