D.4 Flashcards
1
Q
what is an External
Force/Load
A
A force that acts on a
structure from the outside.
2
Q
what is an Centre of Gravity
A
The imaginary point on an
object where gravity acts.
3
Q
what is Symmetry
A
When you can divide a
shape into two or more
equal parts.
4
Q
Is a structure more stable with a
higher centre of gravity or lower
centre of gravity?
A
Lower. You are more stable standing with your feet
apart
5
Q
what is Static Load
A
A force that stays the
same.
6
Q
What are some examples of static
loads?
A
Self weight of a structure
Handrails on a bridge
A desk in a building
7
Q
what is a Dynamic Load
A
A force that moves or
changes.
8
Q
What are some examples of
dynamic loads?
A
Train going across a bridge
Wind
Person moving in a chair
