0## Strength of Materials – Introduction Notes
Strength of Materials (SOM) is a core subject in Civil Engineering. It deals with how structures behave under different forces.
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### 🧱 Types of Stresses:
1. **Tensile Stress** = Force / Area
2. **Compressive Stress**
3. **Shear Stress**
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### 📏 Strain:
- **Strain** = Change in Length / Original Length
- Unitless quantity
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### 📐 Hooke’s Law:
- Stress ∝ Strain (within elastic limit)
- Stress = E × Strain (E = Modulus of Elasticity)
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### 📊 Types of Load:
1. Point Load
2. UDL (Uniformly Distributed Load)
3. Varying Load
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🎓 These basics are helpful for understanding beam bending, trusses, and structural analysis in higher semesters.
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