TERM1 Flashcards
What is componets
parts
What is vertical
at right angles to the ground,upright
What apex
top
What is a rafters
beams,forming part of internal framework of a roof
What is a tie beam
one horizontal beam which joins two rafters
What is compression forces
pushing forces
Tension forces
pulling forces
Span
cover,go over
What is triangulation
a method, which uses triangles to strengthen and reinforce structures
What is inflexible
rigid,stiff
check page 5
shear and torsion
What is elements
weather,includes rain,wind,heat and cold
what is durabillty
how long something lasts
Horizontally
parrallel to the ground
Decorative
added to improve what something looks like, not necessarily useful
What is the different types of bridges
- suspension
- cable stayed
check page 13
arch
Overhang
a part which sticks out beyond support structures
Facade
the face of a building
What is a scale
relationship between measurements in a drawing and measurements on the real objects
Dimension
Measurement
Name 6 simple machines
- lever
- wheel and axle
- pulley
- inclined plane
- wedge
- screw
what is a gear
wheels with teeth around their circumference that interlock with each other
gear train
a system of two or more gears meshed together
counter rotation
when two meshed gears rotate in opposite directions
driver gear
the main gear in a gear train
driven gear
the gear that is meshed with the driver gear and turns in opposite directions
What is linear movement
movement along straight line
Perpendicular
at a 90 degree angle
check page 42 43
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What type cams do you get
- pear shaped
- eccentric cams
- the snail drop
What type of followers do you get
- knife
- flat
- roller
Check page 48 49 for crank
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check page 50 and 51 for bridges
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