Types of Structures
Things with a definite size and shape which serve a definite purpose.
What is a structure?
The measure of the amount of matter in an object
What is mass?
Concrete containing steel is an example of this.
What is a composite material
A device that can change the amount of force needed to move an object.
What is a lever?
The central stone in the top of the arch that directs the forces down the sides and to the ground
What is an arch?
Structures not made by people.
What are natural structures?
The force of gravity pulling you down to earth is considered your....
What is weight?
This force resists, or works against the movement of two surfaces rubbing together.
What is friction?
List 3 types of fasteners.
What is 1. interlocking shapes 2. adhesives 3. ties 4. welding/soldering 5. fasteners
When balanced on its axle, this keeps pointing in the same direction, even if the structure on which it is spinning moves or turns.
What is a gyroscope?
These structures have a skeleton of very strong materials, which support the weight of the roof and covering materials with load-bearing walls.
What are frame structures?
A simple picture that uses arrows to show the strength and and direction of one or more forces.
What is a force diagram?
If you were to go bungee jumping, what force is most likely acting on the rope?
What is tension?
The shape is often referred to as the strongest shape. What is it?
What is triangle?
Sometimes to support buildings or bridges, these large metal, concrete or wood cylinders are sunk through the loose soil until they rest on bedrock.
What is a piling?
These structures are completely empty and have a thin outside layer.
What are shell structures?
What does the acronym M.A.S.S stand for?
What is Mass Always Stays the Same
If a bent or twisted piece of metal is used repeatedly it can cause ________
What is metal fatigue?
A solid beam is the strongest type of beam to use in construction. What is the drawback of a solid beam?
What is too heavy?
What is a footing?
A brick is an example of this kind of structure.
What is a mass structure?
A process in which pieces of metal or plastic are fused together by the application of heat
What is welding?
This is a changing or non-permanent force acting on a structure.
What is a live load?
These are the four considerations for a stable structure.
What are:
Firm foundation
Balance centre of gravity
Spread the load
Direct forces outward
Fasteners, ties, interlocking shapes, adhesives, and melted joints are five categories of this.
What are rigid joints?