structures

structures

1. external forces

   • Gravity
   • wind
   • pressure

2. internal forces

3. loads

   • Fixed or permanent
   • variable

4. mechanichal stresses

   • tension
   • compresion
   • bending
   • torsion
   • cutting or shering

5. Types

   • have to be
     • stability
     • Resistance
     • Rigidity
   • more stable
     • make the base wider
     • Bury the bottom part in the ground
     • center the weight
     • fix the structure
   • reinforced
     • concrete
     • Beams
     • Joists
     • Filler
     • colums

6. analysing