Structures Flashcards
1
Q
What is a structure?
A
- simple or complex construction of assembled parts
working together for a specific purpose - purpose of the structures affects the form (shape) it takes
2
Q
What are three questions you ask to classify by purpose?
A
- What the structure is used for
- How people interact with the structure
- Activities that occur using the structure
3
Q
Categories for classifying by function
A
- support things
- contain things
- span a gap
4
Q
Why choose different materials?
A
- STRENGTH
- FLEXIBILITY
- AVAILABILITY
- COST
- AESTHETICS (APPEARANCE)
5
Q
A
6
Q
What are the three differents categories for form?
A
- Solid (mass) structure
- Shell
- Frame
7
Q
What are the three characteristics of a Solid structure?
A
- made from one piece of a solid material
- little or no space inside
- uses it’s mass to act against forces acting on it
8
Q
Four examples of Solid structures are…
A
dams, icebergs, pyramids, statues.
9
Q
What are the five characteristics of a shell?
A
- outside layer holds the structure together
- can be made of one piece
- hollow on the inside
(often make good containers) - Usually strong AND light
- force is spread over the whole structure
10
Q
Three examples of shell structures are…
A
Iglu, helmet, container
11
Q
What are the four characteristics of a frame structure?
A
- parts fastened together (components)
- can exist on its own (bike frame) or have a covering or skin (umbrella)
- frame supports the weight of the structure
- provides shape
12
Q
Three examples of frame structures are…
A
tent, skeleton, house frame
