Structures

Structures

1. human-made structures

   • are made by people
   • wooden lintels

2. natural structures

   • aren't made by people

3. forces load and stresses

   • gravity
   • wind
   • pressure
   • forces
     • external forces
     • internal forces

4. loads

   • fixed or permanents
   • variable

5. stress

   • tension
   • forces
   • detonation
   • pulled apart
   • stretched
   • tensile stress
   • elongation
   • pushed together

6. torsion

   • twist
   • turn the object and they act in diferent direction
   • shearing or cutting
     • divide
     • forces next to each other, in oposite directions

7. types of structures

   • stability
   • resistance
   • rigidity