Types of Structures
Any object that provides support is called a ......?
Structure
Strongest shape?
Triangle
A Force is what....
A force is a push or pull that tends to make an object change its movement or shape.
Mass is what?
Is the amount of matter in an object.
A load is what?
A load is the amount of mass an object must carry. An elevator needs to carry the mass of all the people inside.
A (blank) is a flat structure supported at either end.
Beam
The (Blank) of a structure is its's use or purpose...
Function
Difference between a cantilever and a crossbeam.
A crossbeam is a beam that is attached to a column at both ends.
A cantilever is a beam extending from a column. It is only supported on one end.
Gravity... what is it?
Gravity acts on every structure there is. To stand upright, all structures need to withstand gravity!
The top stone of an arch is called a ?
Keystone
Solid structure... is what?
-Formed from a solid piece or combination of pieces.
-Made with strong materials
-Has little space between components (or none!)
-Relies on its mass for support
When building a bridge, what do engineers need to consider???
Water or land bridge?
What sort of load will the bridge carry?
The effect of a force depends on 3 things.. what are they?
The magnitude, or size of the force.
The direction of the force.
The location where the force is applied.
An external force is a what?
A force applied to a structure by something else.
The weight of a structure and any weight that is not moving is called a....
Static load
Shell structure...explain.
-Solid outer surface and a hollow inner area.
-Generally round outer area to distribute load evenly.
-Lighter than solid structures
Aesthetics... what is it?
Refers to how visually appealing something is.
This is the unit of measurement used to measure force.
Newton
Symmetry refers to what?
Symmetry is the balanced arrangement of mass along a dividing line or central axis.
(Blank) is a type of external force that changes over time or moves.
Dynamic load
Frame Structure... what is it?
-Made of a series of components fastened together
-Strength comes from the way the components are joined.
-Stronger than any one part of the structure. Lighter than solid structures.
Do all structures need to be aesthetically pleasing? Why or why not?
Depends on the function or purpose of the structure.
1 Newton (N) = ?????
Amount of force needed to hold up 100 grams.
The more mass an object has, the greater the (Blank) force it has!
Gravitational Force
This is a framework of beams arranged together. Trusses are usually made with a bunch of small triangles.
A Truss