Briges

Question 1

Span

Answer 1

Distance between two bridge supports

Question 2

Supports

Answer 2

Physical braces that connect the bridge to the surface below

Question 3

Tension

Answer 3

Force between 2 pulling sides. Too much tension can cause snapping

Question 4

Compression

Answer 4

The opposite of tension along trees. This is how much the bridge is being pushed together. Too much compression caused buckling

Question 5

Dissipation

Answer 5

Allows force to be spread evenly over a greater area

Question 6

Transferring

Answer 6

Moves stress from an area of weakness to an area of strength. It’s the moving of force to a strong point

Question 7

Beam bridge is the most ____ type of bridge

Answer 7

Simple

Question 8

Truss

Answer 8

“Braces” for the beams. They give more support and can be added to the top and/or bottom of the bridge. Released compression and tension

Question 9

Diverts

Answer 9

Distributes force onto 2 abutments

Question 10

The arch shape reduces ____

Answer 10

Tension in the underside

Question 11

The cables from the towers on a suspension bridge transfers _____

Answer 11

Compression to cables to the towers in the earth

Question 12

Cables receive _________

Answer 12

Most of the bridge’s weight and tension

Question 13

Suspension bridges run to _____ in the ground

Answer 13

Anchorages

Question 14

Cable-stayed bridges have no anchorages. They have only a -

Answer 14

Single tower that alone bears the weight. (Think of the one by our apartment in London)

Question 15

Torsion

Answer 15

Caused by high winds and causes the bridge to twist and rotate.

Question 16

Shearing

Answer 16

Causes snapping of tower/anchorages. The 2 fastened structures are forced in opposite directions

Question 17

Resonance

Answer 17

Vibrations combine causing superposition (constructive interference) and uses dampers to lessen the vibrations

Question 18

Force is measured in _____

Answer 18

Newtons

Question 19

Mass is measured in _____

Answer 19

Kilograms

Question 20

Acceleration is measured in _____

Answer 20

m/s^2

Question 21

Acceleration of gravity =

Answer 21

-9.81 m/s^2

Question 22

Remember: if there is -78.5 units pulling down,

Answer 22

There is +78.5 units pressing up

Question 23

BATS

Answer 23

Beams

Arches

Trusses

Suspensions

Question 24

Deck truss

Answer 24

Trusses below the bridge for support