Types of Structures Structures Describing Mass and Forces.

Types of Structures

StructuresDescribing

Mass and Forces

Forces, Loads and Stresses

How Structures Fail

Designing With Forces

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Types ofStructures

A snowflake is an example of this.

What is a structure?

This is whatpushes and pulls are.

What are forces?

This type of structure

is man-made.

What is manufactured?

This is the purposeof a structure.

What is its function?

Mountains are examples of this type of structure.

What is a mass or natural structure?

This term refersto how “good”

something looks.

What isaesthetics?

Extra strengthprovides this.

What is themargin of safety?

Something made frommore than one type

of material.

What are compositematerials?

This is one of two types of joints.

What are mobileor rigid joints?

Nails, staples and boltsare examples of these.

What are fasteners?

Mass.

What is the amountof matter in an

object?

This is the SI unitof force.

What is a newton?

This device isused to measure

weight.

What is aspring scale?

This shows thestrength and direction of

a force.

What is aforce diagram.

Weight is measured

in this.

What is newtons?

Deformation

What is a changeto the shape or size

of a structure?

This is apermanent

load.

What is a dead-load?

This is a crushing

force.

What is compression?

A twisting force is called this.

What is torsion?

Scissors usethis kindof force.

What is shear force?

A fulcrum is neededin order for this

to work.

What isa lever?

Car bumpers aredesigned to do this.

What is buckle?

This is done to fibres to make them stronger.

What is twist?

Metal Fatigue.

What happenswhen metals arebent or twistedover and over

again?

These can causeinternal forces

within a structure.

What areexternal forces?

This shape is used inthe structure of

roofs.

What istriangle?

The load of the roofis shared through

these.

What are vertical supporting posts

or studs?

This has akeystone

in it.

What is an arch?

This supportis found incardboard.

What iscorrugation?

These use less material thansolid beams.

What arebox, I,T, or L

beams?

Describing Structures

Mass AndForces

HowStructures Fail

Forces, Loads, andStresses

Designing With Forces

Stable Structures

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These structuresare not made

by people.

What arenatural structures?

These structures usea thin, carefully shapedouter layer for strength.

What are domes?

A turtle has this type of structure.

What is ashell?

Airplanes arethis type ofstructure.

What is aframe

structure?

This patternmakes brick

walls stronger.

What isa running bond?

TetraPaks areexamples of thistype of material.

What is a layered

material?

Cost, appearance, energy efficiency and

environmental impact.

What to considerwhen choosing

a material?

Dovetail joints arean example of this.

What areinterlocking

shapes?

Dowels are an exampleof this.

What arefasteners?

Sewing machinesdo this with their

thread.

What is tie?

1000 g = this manykilograms.

What is 1?

In Sciencemega means?

What is one million.

10 (9.8) equals this.

What is the amount of gravity

exerted per kg?

This never changes.

What is mass?

Used to measurenewtons.

What is aforce meter?

This is a changingforce acting on

a structure.

What is alive load?

This force allows aski to contact the snowto provide better grip.

What is the forceof bending?

This force createssmall cracks in the outside edge.

What is compression?

A rope undergoes thistype of force.

What is tension?

This is the shape ofthe foundation of

the CN tower.

What isY?

Boat motors havethese to preventdamage to the

engine.

What areShear pins?

Stringers and ribsare used for this.

What is reinforcing

large vessels?

Cables are made bydoing this.

What istwisting wires?

Dry spaghettisuffers from this

when twisted.

What is torsion?

Distance and size

What affectsgravitational force?

Structures startby buildingone of these.

What is a foundation?

In new planned subdivisions, builders need to study this inorder to prevent wall

cracks.

What is the ground?

This is built to spin10 000 times per minute.

What is a gyroscope?

To spread the load, a structuremay rest on this?

What arefootings?

This is found on a craneand is used to keep

the crane stable.

What is acounter-balance?

What is the last name of thearchitect who designed St. Mary’s

Catholic Church?

Who isCardinal?