Landscaping construction/12

1. 1. Which of the following is the correct definition of drainage in landscaping?

• a) The process of leveling the ground surface

• b) The act of removing excess water from the soil

• c) The installation of plants and hardscape elements

• d) The addition of nutrients to the soil for plant growth

2. When setting out a site for drainage, what should be the ideal slope of the ground to ensure proper water flow?

• a) 20-30%

• b) 5-10%

• c) 45-60%

• d) 0%

3.The rate of water movement through soil is determined by the hydraulic conductivity of the soil and the soil texture.

Which two soil types have the highest rate of water infiltration ?

• Clay loam

• Loam

• Clay

• Sandy loam

4. Which tool is typically used to measure slope or gradient on a site?

• a) Tape measure

• b) Spirit level

• c) Protractor

• d) Dumpy

Answer explanation

4. 5. What does the term "footing" refer to in the context of constructing a retaining wall?

• a) The top surface of the wall

• b) The backfill material behind the wall

• c) The base support for the wall

• d) The decorative stone facing on the wall

5. 6.What does the term "footing" refer to in the context of constructing a retaining wall?

• a) The top surface of the wall

• b) The backfill material behind the wall

• c) The base support for the wall

• d) The decorative stone facing on the wall

7. Which type of retaining wall is commonly used for higher slopes and provides strong structural support?

• a) Gravity walls

• b) Cantilever walls

• c) Sheet pile walls

• d) Anchored walls

8. When constructing a retaining wall, what is the purpose of using a geotextile fabric

• a) To prevent weeds from growing

• b) To enhance the visual appeal of the wall

• c) To promote drainage behind the wall

• d) To provide structural stability to the wall

9. Which of the following are considered common materials for building retaining walls?

• a) Concrete blocks and timber sleepers

• b) Brick and gravel

• c) Pavers and sand

• d) Mulch and rocks

10. Which term describes the process of leveling the ground surface before constructing the retaining wall?

• a) Excavation

• b) Backfilling

• c) Compaction

• d) Grading