STRUCTURES

STRUCTURES

1. NATURAL STRUCTURES

   • SHELL STRUCTURES EG: snail shell; honey comb; hornet's nest
   • FRAMEWORK STRUCTURES EG: spider web; animal skeleton; tree

2. MAN MADE STRUCTURES

   • FRAMEWORK STRUCTURES EG: tables and chairs;ladders;gates
   • MAN MADE SHELL STRUCTURES EG : egg containers; milk cartons; cans

3. FUNCTIONS OF STRUCTURES to support and to hold; connect or close gaps or span; cover or protect; for storage

4. GOOD STRUCTURES are rigid-meaning they stay in shape. strong meaning they can withstand forces. stable- meaning they can withstand the force of gravity

5. CAUSE OF STRUCTURE COLLAPSE: Faulty or poor design; incorrect joining overload ; inferior materials; faulty or poor construction;