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|V. Ryan © 2001 - 2017|
|Many structures are based on a frame. Some examples are
shown below. We use frames every day, for example, a stool is a frame on
which we sit.
Buildings are based on frames and this is why they can be built very high. Everywhere we look in towns and cities we see examples of structures based on frames.
|Can you name any frames that you use every day ?|
|Can you name any famous structures, anywhere in the world, that are based on a frame ?|
|Below are two examples of frames that you can make from card or even paper. When you have made then press down lightly with one hand. You will probably find that they can take some pressure from above.|
|The square frame above is strong when pressure is straight down on it. If pressure is from the side it tends to be weak and it can collapse.|
|A triangular frame is very strong. Many structures and buildings are often made up of this type of shape. Man-made structures are often based on this ‘TRIANGULATION ‘.|
|Glue a piece of card on the top and bottom of the frame. This will make the frame even more ‘rigid’. To test the strength of each frame, place a book on the top and if it survives place more books on top.|
|How many books did each of the structures take ? Did any of the frames collapse ?|