Pros
A pro to to building Arch bridges is that they can be built of out many things such as (give 2 examples)
made; stone, brick, concrete, iron, and steel
These 2 types of bridges are not suitable for excessive climate conditions or earthquake-prone areas.
Cable-Stayed Suspension
This type of bridge requires requires architectural and engineering specialists – less use of general laborers and steelworkers.
Truss
True or False:
A live load is the cars and trucks that cross over the bridge; The deadload is the bridge itself
True; True
Give an example of compression
Crushing a marshmallow
What are the two positive points about Beam Bridges?
Simple and quick to build
Multiple types of material can be used.
This type of bridge can only cover short distances
Beam
This type of bridge is very time consuming to make
Arch Bridge
True or False:
Internal forces are forces that act on one part of an object and are exerted by another part of the same object.
True
Give an example of torsion
Twisting a marshmallow
This type of bridge can be constructed quicker than other types of bridges
Cable Stayed Bridge
This type of bridge requires perfect construction to work. They must distribute weight evenly for a load to cross over
Truss
Although boats can travel underneath this bridge, and the bridge is very long, it is very very expensive to maintain
Cantilever
True or False:
External forces are forces that do not act on an object due to some other object.
False - they do!
Give an example of shear
Ripping a marshmallow
This type of bridge is the best design for spanning long distances. It is quite stunning to look at too
Suspension
This type of bridge allows for many boats to easily cross underneath it
Cantilever
This type of bridge is simple and quick to build
Beam
What are the 5 fundamental types of internal forces?
What is a complimentary force?
Give an example of a complimentary force.
Complementary forces happen when different kinds of forces act on a structure at the same time.
What do you think an abutment does for a bridge?
A bridge abutment is a structure which connects the deck of a bridge to the ground, at the ends of a bridge span, helping support its weight both horizontally and vertically
This type of bridge is regarded by many as aesthetically pleasing – creating a landmark for the community
Suspension
This type of bridge creates less force on abutments
Tied-Arch
The external force definition is: an external force is a force that acts from the outside.
What are three main types of external forces?
gravitational force, air resistance, and friction.