Structures
Forces
Loads and Forces
Bridges
Strengthening Structures
100
this structure is made of solid pieces and strong material
What is a solid?
100
these forces come from the outside of the structure
What is external forces?
100
this is the effect of gravity on a structure
What is a static load?
100
this bridge is good for short distances as there is no centre support
What is a beam bridge?
100
a way to strengthen structures by gluing lots of layers together
What is lamination?
200
The Eiffel Tower in Paris, France is an example of this structure
What is a frame?
200
this external force acts on all structures all the time
What is gravity?
200
this is a force that moves or changes while acting on the structure
What is a dynamic load?
200
this type of bridge uses two tall towers and cables
What is a suspension bridge?
200
the name for the folds and bend or triangular ridges
What is corrugation?
300
This structure is moulded into shape that provides strength and stability.
What is a shell?
300
this force is caused by one part of a structure acting on other parts of a structure
What is an internal force?
300
This is a force that pushes in opposite directions
What is shear?
300
this type of bridge uses a semi-circular structure
What is an arch bridge?
300
concrete beams are often reenforced by steel bars called this
What is rebar?
400
this is any push or pull
What is a force?
400
this is a force that pulls
What is tension?
400
this is the force that twists
What is torsion?
400
this bridge uses one or more towers (pylons), from which cables support the deck
What is a cable-stayed bridge?
400
the elastic-like tissue that connects muscles to bones
What are tendons?
500
an igloo is an example of this type of structure
What is a shell?
500
this is a forces that presses down
What is compression?
500
this force allows scissors to work
What is shear?
500
name two things that can cause bridges to collapse
What is engineering error and damage by passing vehicles, floods
500
engineers must consider these two qualities of any beam
What is the strength and the weight of the beam?