Stability of Structures
the point around which the object's mass is equally balanced in all directions
What is the centre of gravity?
A horizontal structure designed to support a load.
What is a beam?
Can be used in bridges and are arranged in triangles.
What is a truss?
Poor installation like using rusty nails to put in shingles is an example of:
What is faulty construction?
steel rod used to reinforce concrete
What is rebar?
the ability of a structure to maintain, or regain, a stable balanced position.
What is stability?
Multiple folds in a material that provides additional strength.
What is corrugation?
Triangles help the structure support what?
What is more weight?
The Leaning tower of Pisa is a good example of this.
What is foundational failure?
The reason why trusses are useful in structures.
The centre of gravity is the point at which the entire _________ of an object seems to be concentrated.
What is mass?
A beam that is supported at only one end.
What is a cantilever?
A curved structure where compression forces are directed downwards in many planes of application.
What is a dome?
A building collapsing under the weight of massive amounts of snow is an example of this.
What is extraordinary loads?
True or False:
Concrete can withstand a great deal of tension, but it cannot withstand a lot of compression.
False
Objects with a low centre of gravity and a wide support base tend to be what?
What is stable?
It has a letter in it and is stronger than a regular beam.
What is an I-beam?
Transfers compression downward in one plane of application.
What is an arch?
Approximately 40 - 60 percent of all failures are a result of this.
What is bad design.
The beam can be strengthened by changing its shape or composition by using:
Rebar, corrugation, I-Beam
The centre of gravity does what when a structure is moved or bent?
What is change or shifts?
This is placed below the beam to provide resistance to compression.
What is a strut?
The stone in the middle of the arch that keeps it together
What is the keystone?
What is it called when someone is sloppy or careless when building a structure?
Human error (Faulty Construction)
These three factors affect how much force a structure can support.
What are mass, shape, and form?