Types of Structures
What is a structure?
Anything made of parts put together for a purpose
What is a force?
A push or a pull
What is a load?
A force acting on a structure
What are the 3 forms of structures?
Solid, Frame, Shell
What is an external force?
A force that acts on a structure from the outside
Is a cardboard box a structure?
Yes!
What are the two components of a force?
Direction and Magnitude
Aside from dynamic loads, what are the other two loads
Dead and live loads
An egg is this kind of structure
Shell
Give 2 examples of external forces
Gravity, Wind, Applied Force, Earthquakes
What is the other property of a structure aside from its function?
Form
What is an applied force?
A contact force; forces that push or pull when two objects come in contact with each other
What is a dynamic load?
Any load caused by forces other than gravity
Give two examples of frame structures
Goalie net, spider web, box, beams of a house, tent
What is an internal force?
A force acting between two different parts of a structure
What is the definition of the function of a structure?
The purpose or task that the structure is designed to perform
How is force measured?
Newtons (N)
What are the definitions of live and dead loads?
Live loads are weight of the objects the structure supports.
Define a solid structure
A structure made of uniform solid materials (not hollow) that can support loads
What is the "point of application"?
The location on the object where an external force is applied onto.
List 3 functions of a house
Provide shelter, Protect from weather, keep warm, sleep in, etc.
What's the difference between mass and weight?
Mass measures the amount of material
Weight measures the force of gravity pulling on the object
Give 3 examples of dynamic loads that could act on a building
Wind, water, impacts (cars, wrecking ball), earthquakes,
Name a combination structure and list the different structures within that combination structure.
Skeleton - skull (shell), femur (solid), ribs (frame)
House - foundation (solid), wood beams (frame)
What are the four internal forces?
Tension, Compression, Shear, Torsion