What does it mean when a drawing is not to scale?

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True measurements and scale measurements

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Presentation transcript:

What does it mean when a drawing is not to scale?

Where can a scale be used? Scale Drawings Where can a scale be used?

Draw objects, plans or maps! We couldn’t possibly fit the true measurements of a new house or a new design for a playground onto a piece of paper.

What jobs is this skill important for? Architect Construction workers Architects and drafters work together – architects more on buildings and constructions and need to take into consideration aesthetics and economics – drafters have a wider range can wok on circuits and machinery and are more technical Drafters

How do we use scale measurements? It is important that the drawing is measured accurately using the scale. The measurements must make an exact copy of the real object/building but in a smaller size like a replica of a car

The scale of this drawing is 1cm = 25cm 25 x 4 = 100cm 4cm 2cm 25 x 2 = 50cm The scale of this drawing is 1cm = 25cm What is the actual width and height of the TV ?

25m is the true length of the house Imagine this house measures 10 cm in length. The scale used here is 1cm = 2.5m 1cm : 2.5m 10cm : ? 10cm : 25 m 25m is the true length of the house x10 x10

The height of the scale drawing of this boat is 23cm. The scale is 1cm=7m What is the true height of the boat? 161m

If the width of the true/real/actual boat is 70m. The scale is 1cm=7m What is the width of the drawing? 161m

Scale Drawing Scale drawings allow us to draw large objects on a smaller scale while keeping things accurate & in proportion!

The scale may be given in 2 ways WAY 1: Given units  1cm = 400km (units given because they are different) WAY 2: No units given  1 : 50 000 This means that the 1 and 50 000 are of the SAME units On a paper, you will most likely consider cms 1cm corresponds to 50,000 cm (500m) in real-life!

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