Civil Engineering quiz

More questions about Civil Engineering

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   What is the top central stone of an arch called?

   Answer: Keystone

   Why: Until the keystone goes in, an arch cannot stand on its own and rests on a temporary timber frame called centring.

2. 2 Medium

   Which binder holds the stones of most asphalt roads together?

   Answer: Bitumen

   Why: Bitumen is the heavy leftover from refining crude oil, while coal tar is made by heating coal.

3. 3 Hard

   How much did the 1995 Kobe quake lengthen the Akashi Bridge's span?

   Answer: About 1 m

   Why: Only the two towers stood when the quake moved them apart, so the main span grew from the planned 1,990 m to 1,991 m.

4. 4 Easy

   Why does a bridge ice over before the road beside it?

   Answer: Cold air underneath

   Why: Roads gain heat from the ground beneath them, while a bridge deck loses heat through both its top and its underside.

5. 5 Medium

   What did NASA calculate the Three Gorges Dam would slow?

   Answer: Earth's rotation

   Why: A full reservoir holds about 40 cubic km of water, enough to make each day longer by about 0.06 microseconds.

6. 6 Hard

   How much more road damage does an axle twice as heavy do?

   Answer: About 16 times

   Why: By the same rule, spreading one axle's load over two axles cuts the road wear to about an eighth.