You buy land in the tropics on steep mountain slopes covered by large trees and deep soil. You want to build a house on the land. Which of the following building plans is a very bad idea because of the danger of triggering mass wasting?a. Excavate a flat bench on the slope for the house, pushing the debris to the slope below and leave a cut bank above the flat bench with grass planted on the steep slope.
b.Excavate the soil from the building site, install drainage systems, and backfill with gravel to prevent water accumulation.
c. Terrace the slope, building on the terraces, and constructing a rock retaining wall with voids to allow drainage of water.
d. Sell the land because it will always be prone to mass wasting.

Question

10-03-2020
Geography

contestada

You buy land in the tropics on steep mountain slopes covered by large trees and deep soil. You want to build a house on the land. Which of the following building plans is a very bad idea because of the danger of triggering mass wasting?a. Excavate a flat bench on the slope for the house, pushing the debris to the slope below and leave a cut bank above the flat bench with grass planted on the steep slope.
b.Excavate the soil from the building site, install drainage systems, and backfill with gravel to prevent water accumulation.
c. Terrace the slope, building on the terraces, and constructing a rock retaining wall with voids to allow drainage of water.
d. Sell the land because it will always be prone to mass wasting.

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MrRoyal MrRoyal · Answer 1 · 2020-03-11T04:58:28+01:00

Answer:

A.

Excavate a flat bench on the slope for the house, pushing the debris to the slope below and leave a cut bank above the flat bench with grass planted on the steep slope.

Explanation:

Mass wasting are triggered by mass amounts of rock, soil and debris, water, displacement of rocks etc. It occurs when the mountain slopes are overpowered by pull of gravity. This will definitely lead to erosion of the materials on the slope and the mountain.

In Option (A) selected above, mass wasting is can be easily triggered because excavating a flat bench will definitely create an area for water to gather. This accumulation of water will cause the structure of the slope to weak.