Types of structures Topic 1

Types of structures Topic 1

1. Definition: Has a definite shape , size , and purpose

2. To function it must resist forces/stresses that could change it

3. Load: weight carried by structure

4. CLASSIFYING STRUCTURES

   • Grouped by common features there are 2 kinds of structures
     • natural structures: not made by people ex: birds, trees, plants, and mountain
     • Manufactured structures: things build by people ex: fences, buildings,parks

5. MASS

   • Definition: a structure made up of a piling of materials
   • cause of large weight and size it must be carefully arranged
   • (could not be heavy enough to stay in place) (if too heavy could push ground down unevenly) (may not be fastened enough and move out of place) (may not be pushed firmly to the ground could tip over)

6. FRAME

   • Most of the inside is hollow, and has frame work called load bearing
   • Frame structures can be exposed or hidden

7. SHELL

   • Definition: gets it's strength from a very thin care fully shaped outer layer, no internal frame needed
   • Features:( good containers) (the shell spreads forces through out the whole thing there for does not have to be extremely strong)
   • Downfalls: single scratch can damage it, if made from wet material could dry unevenly, flat materials are hard to make round ,flexible materials go through a lot to be sewn

8. some buildings are made up of mixed and matched structured