26.10.1. Soft vs. Hard Soils

Try these first

1. 1.

   What type of soil tends to amplify seismic waves?

   Hint

   Think about soil types that are usually marshy or retain water.

2. 2.

   How do hard soils affect seismic wave travel?

   Hint

   Consider the properties of solid rock.

3. 3.

   Which type of soil amplifies seismic waves more during an earthquake?

   • Soft Soils
   • Hard Soils
   • Both
   • Neither

   Hint

   Think about which soils are less compact.

4. 4.

   True or False: Hard soils transmit seismic waves more slowly than soft soils.

   • True
   • False

   Hint

   Consider the density and compression of the soil.

5. 5.

   Consider a city built on both soft and hard soils. Discuss how the differences in soil types would affect building collapse rates during an earthquake.

   Hint

   Analyze examples from real-world cases.

6. 6.

   If an earthquake generates waves that are harmful to structures, how would an engineer decide on the materials and design if the site has both soft and hard soils?

   Hint

   Consider balancing the structural integrity with wave dynamics.