Understanding Man-Made Structures and Aesthetics
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Questions and Answers

What does aesthetics refer to?

  • The pleasing appearance or effect that an object has because of its design (correct)
  • The ability of a structure to maintain its position
  • The classification of structural forms into mass, frame, and shell
  • The force acting on a structure causing it to change its shape

    • What is the role of aesthetics in the structural designs of First Nations people?

  • It is related to the ability of structures to hold themselves up
  • It determines the structural strength of their designs
  • It reflects the environment and personal spiritual beliefs of the owners (correct)
  • It classifies the structures into mass, frame, and shell

    • How is structural strength defined?

  • The force acting on a structure causing it to change its shape
  • The classification of structural forms into mass, frame, and shell
  • The ability of a structure to maintain its position
  • The ability of a structure to hold itself up, even with added weight (correct)

    • What is the main criterion for classifying structures according to the text?

    <p>Materials used in construction</p> Signup and view all the answers

    In what way do homes developed by different cultures demonstrate human adaptation?

    <p>By showcasing varied approaches to a basic form</p> Signup and view all the answers

    How is force defined in the context of structures?

    <p>A push or pull that tends to change an object's movement or shape</p> Signup and view all the answers

    What is the main method of increasing a structure's stability?

    <p>Placing most of the mass of the structure close to the ground</p> Signup and view all the answers

    What does symmetry refer to in structures?

    <p>Equal distribution of mass around the centre</p> Signup and view all the answers

    How does placing a structure's mass close to the ground affect its stability?

    <p>Increases stability</p> Signup and view all the answers

    What is the role of the centre of gravity in determining a structure's stability?

    <p>It determines whether a structure will stay balanced</p> Signup and view all the answers

    What is a load in structures?

    <p>An external force acting on a structure</p> Signup and view all the answers

    Why must the mass of a symmetrical structure be equally distributed around its centre?

    <p>To ensure equal force of gravity around the centre and maintain stability</p> Signup and view all the answers

    What is the shape of a girder (box beam)?

    <p>Rectangular prism</p> Signup and view all the answers

    How is a truss usually designed?

    <p>As interlocking triangles</p> Signup and view all the answers

    What kind of beam is a cantilever?

    <p>Supported only at one end</p> Signup and view all the answers

    What is structural fatigue caused by?

    <p>Repeated abnormal use of the structure</p> Signup and view all the answers

    What happens when a structure undergoes structural failure?

    <p>The structure collapses</p> Signup and view all the answers

    How are materials in structures evaluated?

    <p>According to many properties</p> Signup and view all the answers

    What is an example of a dynamic load?

    <p>Moving students on a school staircase</p> Signup and view all the answers

    Which type of load exerts a force that is not moving relative to the structure?

    <p>Weight of a structure</p> Signup and view all the answers

    What is a key consideration for engineers when deciding what type of bridge is suitable?

    <p>What the bridge is crossing</p> Signup and view all the answers

    Which statement best defines a dynamic load?

    <p>An external force that moves or changes with time</p> Signup and view all the answers

    In terms of performance requirements, what should engineers always express?

    <p>Maximum Weight the structure can support</p> Signup and view all the answers

    What example best represents a static load?

    <p>'Ten people standing in an elevator waiting for the doors to close'</p> Signup and view all the answers

    What is the purpose of testing a structure to the extremes?

    <p>To ensure safety at all stages of construction</p> Signup and view all the answers

    Why do builders need to consider environmental factors like terrain conditions?

    <p>To ensure stability and safety of the structure</p> Signup and view all the answers

    What is the importance of monitoring for structural safety according to the text?

    <p>To determine why structures fail and how often</p> Signup and view all the answers

    Why must builders take climate conditions into account when constructing outdoor structures?

    <p>To ensure structures can withstand weather conditions</p> Signup and view all the answers

    What is the significance of accounting for earthquake risk in construction?

    <p>To ensure structures can resist external and internal forces during earthquakes</p> Signup and view all the answers

    Why are special techniques required when constructing in areas with unstable soils and steep terrain?

    <p>To ensure structural stability and safety</p> Signup and view all the answers

    How does the presence of a very thin film of water on a road affect the slipperiness to a moving car or truck?

    <p>Less slippery</p> Signup and view all the answers

    What is one advantage of using screws, tacks, and staples in structures?

    <p>Easily removed</p> Signup and view all the answers

    How can the amount of friction between two surfaces be increased?

    <p>By increasing the area in contact</p> Signup and view all the answers

    What is the difference between fixed joints and moveable joints in structures?

    <p>Fixed joints are rigid, while moveable joints are flexible or mobile</p> Signup and view all the answers

    How do joints that rely on bonding connect two surfaces in structures?

    <p>By changing the two surfaces so they are connected by a common material</p> Signup and view all the answers

    Structural safety testing occurs only during the final stages of a project.

    <p>False</p> Signup and view all the answers

    Permafrost is a type of soil that remains solid throughout the year without any seasonal changes.

    <p>False</p> Signup and view all the answers

    Unstable soils and steep terrain are ideal choices for constructing structures.

    <p>False</p> Signup and view all the answers

    Monitoring for structural safety is not a continuous process according to the text.

    <p>False</p> Signup and view all the answers

    External and internal forces due to shifting of the earth's plates do not pose a risk to structures built in earthquake-prone areas.

    <p>False</p> Signup and view all the answers

    Structural fatigue is not a concern when evaluating the safety of a structure.

    <p>False</p> Signup and view all the answers

    Terrain conditions do not impact the suitability of a location for constructing a structure.

    <p>False</p> Signup and view all the answers

    Structural safety is not affected by climate-related factors according to the text.

    <p>False</p> Signup and view all the answers

    Builders are not required to consider earthquake risk when constructing structures.

    <p>False</p> Signup and view all the answers

    The margin of safety refers to the absolute limits within which a structure's safety performance is considered acceptable.

    <p>True</p> Signup and view all the answers

    Hinges, pin joints, and flexible rubber tubing are examples of fixed joints.

    <p>False</p> Signup and view all the answers

    Ball and socket joints are examples of pivot joints.

    <p>False</p> Signup and view all the answers

    Ligaments are connective tissues that attach muscles to bones.

    <p>False</p> Signup and view all the answers

    Cartilage reduces friction by providing rough surfaces for movement.

    <p>False</p> Signup and view all the answers

    Skin waterproofs the body, protects it from bacteria, and regulates temperature through sweating and shivering.

    <p>True</p> Signup and view all the answers

    Fixed joints result from welding, cementing, gluing, or nailing parts together firmly.

    <p>True</p> Signup and view all the answers

    Movable joints allow flexibility and movement within a structure when required.

    <p>True</p> Signup and view all the answers

    Fixed joints are designed to allow movement in the structure.

    <p>False</p> Signup and view all the answers

    Movable joints in structures prevent any movement of parts.

    <p>False</p> Signup and view all the answers

    Welding, cementing, and gluing are methods that result in movable joints in structures.

    <p>False</p> Signup and view all the answers

    A camper spreads a rubber tarp on slightly sloping ground, then puts a backpack on top of the tarp. When the camper returns a moment later, the backpack has slid several centimetres up the slope.

    <p>False</p> Signup and view all the answers

    It is easier to open a jar lid if your hands are dry than if they are wet.

    <p>True</p> Signup and view all the answers

    A hockey skater reduces speed by digging in the tip of each skate when striding forward.

    <p>True</p> Signup and view all the answers

    In structures, fixed joints are always rigid and immovable to allow for flexibility in movement.

    <p>False</p> Signup and view all the answers

    Movable joints in structures are designed to allow for flexibility and movement between structural components.

    <p>True</p> Signup and view all the answers

    A fixed joint allows for movement between the connected parts of a structure.

    <p>False</p> Signup and view all the answers

    Movable joints are designed to restrict movement between different parts of a structure.

    <p>False</p> Signup and view all the answers

    Fixed joints are essential in structures that require flexibility and adaptability to external forces.

    <p>False</p> Signup and view all the answers

    Movable joints are commonly used in bridges to absorb and distribute dynamic loads.

    <p>True</p> Signup and view all the answers

    Fixed joints are typically utilized in structures like suspension bridges where controlled movement is necessary.

    <p>False</p> Signup and view all the answers

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