2. Great Wall of China
The Great Wall of China
is a man made structure.
It is a solid structure
it is about 6,400km
long.
Purpose to keep
intruders out and away
and maintain peace.
3. Wheel Chair
The Wheel chair
is a man made
structure
It is a frame
structure.
It is for handicap
people that are
paralyzed.
4. Chicken eggs
The chicken
egg is a shell
structure
It can be any
size depending
on the chicken.
The purpose is
to hold baby
chickens inside
so they can
hatch.
5. Bricks
The brick is a solid
structure.
It is man made.
purpose is to build.
6. Helmet
The helmet is
a solid structure.
it is for safety.
The purpose
is to be safe for
construction.
7. Beam bridge
is most
common
bridge used
simple is
supported at 2
ends
longer ones
supported by
additional piers
8. Truss Bridge
light weight but strong
made of trusses along
its side
Shell structure
9. Suspension Bridge
Hangs between two
ends that hold it up.
modern suspension
bridge has tall towers
on either end that
support the main
cables.
main cables are
anchored to concrete
at each end of the
bridge.
10. Arch Bridge
designed to withstand
heavy loads
dynamic load of people
and other traffic causes
each piece of wood or
stone in the arch to push
against the piece next to it.
This push is eventually
transferred to the end
supports, which are
embedded in the ground.
