# Drawing Drawing why is drawing important communication Drawing

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Drawing

Drawing why is drawing important? communication!

Drawing

Drawing How big is it? ? ? ? Can you think what might help?

Ways to Labelling your design 1. A materials list and key is always important. 2. Dimensions are also important. 3. Direct labels are good, but only with non-complex structures. 4. With complicated designs, scale is better. Drawings done ‘to scale’ are smaller than the real thing, but have the correct proportions. Therefore you can measure straight off the drawing and know a dimension.

Drawing = iron sheet Labels Key Scale = wire mesh 2. 4 m 1. 2 m 1 m 1. 5 m 1: 10 1. 5 m SCALE 2 m

Different Views of the drawing • You must be able to draw different views of your structure. • Allow people to understand what the shape looks like, and also read measurements of surfaces easily. • It is also useful for calculating the amount of materials required.

Drawing what is useful about drawing different views? calculate area – work out how much material required

Drawing Scale It is a good idea to decide scale before you start. As an example, let us say the largest dimension on the design is 10 m. You want the drawing to fill the page, so select an easy number that will fit on the page, for example 20 cm. You can now say that 20 cm on the drawing represents 10 m in real life, or 20 cm represents 1000 cm in real life. You always try and write scale in its simplest, smallest form, so this scale would be 1: 50, or 1 cm on the drawing represents 50 cm in real life.

Drawing Scale For example chicken hut SCALE

How to visualise dimensions 7 -3=4

How to visualise Subtraction 700 bricks 200 bricks 700 - 500 = 200 500 bricks

How to visualise Subtraction 700 bricks 100 bricks 600 bricks 30 bricks 570 bricks 30 + 100 = 130 700 - 570 = 130

How to visualise Subtraction 500 bricks 200 bricks 300 bricks 290 bricks 1 brick 289 bricks 1 + 10 +200 = 211 500 - 289 = 211

Drawing

Drawing

Drawing

Drawing

Drawing 10 cm 8 cm 20 cm 15 cm 20 cm 15 cm

Drawing 1. 6 m 1. 5 m 2. 1 m 2. 5 m 1. 6 m 0. 5 m 1. 6 m 1. 5 m 3 m 1. 5 m 2 m 1. 5 m