Structures and Their Purposes

What is a structure?

• A supporting framework that holds a load and has a shape, size, and purpose.

• A type of animal that lives in the wild.

• A kind of food that people eat.

• A machine that moves by itself.

Which of the following is an example of a structure?

• A desk

• A cloud

• A rainbow

• A sound

Why was the CN Tower built tall?

• So it could send radio waves across the city without being blocked by other tall buildings.

• So it could be seen from space.

• So it could hold more people inside.

• So it could be used as a giant slide.

Why would it be a bad idea to design a pillow using barb wire?

• Because the purpose of a pillow is to be soft and comfortable, not sharp and dangerous.

• Because pillows should be heavy.

• Because pillows should be made of metal.

• Because pillows should be used for cooking.

What is the purpose of Gloria’s chair?

• To let Gloria sit down and be comfortable

• To help Gloria write faster

• To make Gloria run

• To let Gloria read books

What materials are good for structures? (Choose the best answer based on your knowledge.)

• Strong and durable materials like steel and wood

• Soft and weak materials like paper

• Materials that melt easily

• Materials that are invisible

How do structures withstand strong winds? (Choose the best answer based on your knowledge.)

• By being designed with strong materials and shapes

• By being very light and flimsy

• By having no purpose

• By being made of paper

What is a dead load in the context of structures?

• The effect of gravity acting on the structure itself

• A force that moves or changes while acting on a structure

• The force of wind blowing on a building

• The total weight of people inside a building

Why is wind considered a live load?

• Because it is always present

• Because it is a force that moves or changes while acting on a structure

• Because it is part of the structure itself

• Because it is heavier than other loads

Which of the following best describes a live load?

• The weight of the structure itself

• A force that does not change

• A force that moves or changes while acting on a structure

• The weight of the foundation