Answer:
The lateral stress ratio of the soil at point A is 0.3
Explanation:
given that; Unit weight = 20 kNm⁻³ at point A 5m below the ground surface,
vertical stress ([tex]V_{stress}[/tex]) = 20 kNm⁻³ × 5m ⇒ 100 kNm⁻²
vertical stress ([tex]V_{stress}[/tex]) = 100kPa
note that; Horizontal Stress ([tex]H_{stress}[/tex]) is given by k([tex]V_{stress}[/tex])
where "k" is the lateral stress ratio
[tex]H_{stress}[/tex] = k([tex]V_{stress}[/tex])
k = [tex]H_{stress}[/tex] ÷ [tex]V_{stress}[/tex]
k = 30 kPa ÷ 100 kPa
k = 0.3
