Question

what are some issues which exacerbate problems associated with mass wasting?
too much water
too steep a slope
to heavy a load for the hill
all of these answers can be correct
question 24
2 pts
determining whether a hill - side has a high probability of failing or not is calculated by looking at such parameters as the hill load, area of the slip plane, material shear strength (cohesion and friction), the slope, and other factors. when these numbers are multiplied and divided you get a unitless number. what is this number called?
safety factor (factor of safety)
resisting forces/driving forces
landslide factor
slip calculation
question 25
2 pts
you buy a house which is at the base of this hillside and after looking at some past landslide maps it appears that \maybe\ the hill has failed in the past. calculating the resisting and driving forces, the former amounts to 700,500,100 and the latter to 495,800,500. is the factor of safety high enough to consider this slope stable?
unable to determine
no
yes

Explanation:

Step1: Calculate the Factor of Safety

The formula for the Factor of Safety (FoS) is \(FoS=\frac{\text{Resisting Forces}}{\text{Driving Forces}}\).
Substitute the given values: \(\text{Resisting Forces} = 700500100\) and \(\text{Driving Forces}=495800500\).
So, \(FoS=\frac{700500100}{495800500}\approx1.41\).

Step2: Determine stability

A Factor of Safety greater than \(1\) (commonly, values above \(1.3 - 1.5\) are considered relatively stable depending on context). Here \(FoS\approx1.41> 1\).

Answer:

Question 24: Safety Factor (Factor of Safety)
Question 25: Yes