The image above represents bulk modulus of elasticity (stress).

To compute for bulk modulus elasticity (stress), two essential parameters are needed and these parameters are **Average Horizontal Stress (h _{av}) **and

**Vertical Stress (σ**

_{v}).The formula for calculating the bulk modulus elasticity (stress):

k = ^{hav} / _{σ}_{v}

Where;

k = Bulk Modulus of Elasticity (Stress)

h_{av} = Average Horizontal Stress

σ_{v} = Vertical Stress

Let’s solve an example;

Given that the average horizontal stress is 15 and the vertical stress is 34. Find the bulk modulus of elasticity (stress)?

This implies that;

h_{av} = Average Horizontal Stress = 15

σ_{v} = Vertical Stress = 34

k = ^{hav} / _{σ}_{v}

k = ^{15} / _{34}

k = 0.44

Therefore, the **bulk modulus of elasticity (stress) **is **0.44.**

**Calculating the Average Horizontal Stress when the Bulk Modulus Elasticity (stress) and the Vertical Stress is Given.**

h_{av} = k x σ_{v}

Where;

h_{av} = Average Horizontal Stress

k = Bulk Modulus of Elasticity (Stress)

σ_{v} = Vertical Stress

Let’s solve an example;

Given that the bulk modulus of elasticity (stress) is 25 and the vertical stress is 8. Find the average horizontal stress?

This implies that;

k = Bulk Modulus of Elasticity (Stress) = 25

σ_{v} = Vertical Stress = 8

h_{av} = k x σ_{v}

h_{av} = 25 x 8

h_{av} = 200

Therefore, the **average horizontal stress **is **200.**

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