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Worksheets6th Grade Assessment #3-Structures
Total questions: 11
Worksheet time: 6mins
Static loads are always changing.
True
False
A pier can be used to support a beam bridge to prevent it from bending.
True
False
In an arch bridge, the compressive stress created by the load is spread over the arch
as a whole.
True
False
As a bridge material, concrete is weak under compression, but strong under tension.
True
False
A cable being pulled from both ends is an example of
compression force
tension force
force of friction
force of gravity
Engineers design suspension bridges in order to
make the towers bear the entire weight of the bridge
lessen the cost of the bridge
decrease the tension forces
cross longer spans
The most fundamental rule of bridge design is that
compression force must be zero
the tension force must be zero
the net force must be zero
the force of gravity must be zero
A basic triangle in a truss is strong because
it can collapse onto a parallelogram under a heavy load
it forms right angles
its shape cannot be distorted
its shape can be changed to make different designs
The main purpose of a structure is to
enclose and define a space
connect two points.
hold back natural forces.
any of the above
Which of the following is NOT an example of a dynamic load?
A truck crossing a bridge.
Furniture in a room.
A gust of wind pushing against a building.
A person bouncing on a chair.
The design and construction of structures must:
minimize the effects of bending
maximize the effects of bending
have parts that are shaped and connected so that they will bend
both B and C above.
