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WorksheetsBridge Unit Test
Total questions: 28
Worksheet time: 28mins
Match the common bridge building material with the strength it is used for.
Tensile strength relates to (a)
Compressive strength relates to (b)
When the span of a bridge is doubled, the bridge gets how much weaker?
0%
25%
50%
80%
100%
Who designs bridges?
civil engineers
designers
architects
mechanics
Which bridge type would have the most problems (such as twisting or bending) if you did not build it carefully?
Truss
Suspension
Beam
Arch
Who invented stone arch bridges and concrete?
Greeks
Romans
Americans
Germans
Refer to the diagram of the beam. Label where the beam experiences compressive and tensile forces.
Compression
Tension
Put the steps of the engineering design process in the correct order.
1) (a) 2) (b) 3) (c) 4) (d) 5) (e)
Triangles are unique because of their ability to evenly distribute loads and forces.
True
False
Bridges are not necessary in our society.
True
False
In math, lbs/in² is the units used for the same thing that psi units are used for in science. What is it?
pressure strength inside
pounds per square inch
pounds divided by inches
parts squared individually
What is the most cost effective building material?
stone
steel
reinforced concrete
concrete
none of the other choices
Americans invented concrete.
True
False
Use the formula:
SWR = Load ÷ Mass
What is object 1's Breaking Load?
Use the formula:
SWR = Load ÷ Mass
What is object 2's Strength-to-Weight ratio?
Use the formula:
SWR = Load ÷ Mass
What is object 3's Mass?
The bridges are labeled A-D.
Match them with their correct descriptions.
Hard to design and build because they are affected by the wind and other dynamic forces.
C
Fast and cheap to build with little environmental impact.
D
Easily movable due to the open geometric pattern and even load distribution.
B
The curve affects tension, but it needs firm abutments to hold it in place.
A
The bridges are labeled A-D.
Match them with their correct descriptions.
The strongest and simplest bridge, but for short spans.
D
Longer and lighter than a beam bridge.
B
Very strong and good-looking, especially when made of stone.
A
Longest spans of up to 7,000 ft.
C
Match the bridge part with its correct description.
A horizontal (side-to-side) structural member
beam
The roadway on a bridge
deck
A vertical (up and down) structural member
pier
The structural members that support a bridge at each end
abutments
Label the forces that act on bridges.
Buckling
Snapping
Elastic
Compression
Shear
Bending
Tension
Torsion
Which bridge type has a hanging roadway?
Suspension
Truss
Beam
Arch
Truss systems on bridges are primarily composed of which shape?
cylinders
rectangles (or squares)
triangles
circles
Bending is caused by the combination of two forces occurring at the same time: tension and compression.
True
False
Reinforced concrete is concrete that is reinforced with __________.
brick
stone
cable
steel
The length of a bridge, the distance between piers, or the land to land measurement of a bridge is called what?
width
road
deck
span
What is load? Select all that apply.
People walking across the bridge
The weight of vehicles traveling over the bridge
The weight of the bridge
Wind, snow, and other environmental loads
This is an image of the three roadway classifications for truss bridges. Put their names in the correct order from top to bottom, so the name of the top bridge will be on the left.
Deck truss
Through truss
Pony truss
Truss parts can move at the connection points, or joints.
True
False
Match each truss type with its correct name.
Warren
K-truss
Bowstring
Howe
Pratt
Brown
