1 / 15

Scale Models: Understanding and Using Scale in Models and Drawings

Learn about scale models and drawings, their definition, scale factors, and how to solve scale-related problems. Discover the importance of proportions and how to determine missing values. Explore practical examples and applications of scale in design projects.

abrandon
Download Presentation

Scale Models: Understanding and Using Scale in Models and Drawings

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Starter

  2. Scales! • Has anyone made a scale model before? • What did you make? • How would you explain what a scale model is?

  3. Scale Models/Drawings • A scale model or a scale drawing is used to represent an object that is too large or too small to be drawn or built at actual size

  4. Scale • Definition: The scale gives the relationship between the measurements on the drawing or model and the measurements of the real object • Ex: 1in = 3ft 1:24

  5. Scale Factor • The ratio of a length on a scale drawing to the corresponding length on the real object is called the scale factor • If the scale is: 2in = 16 in • Then the Scale factor is: 2/16 or 1/8

  6. Scale Factor • Another way to think about it is: • What did you multiply the original amount by to get to the model size? • Ex: Scale 2:6 • What did you multiply by? • Scale factor is 3.

  7. The relationship is proportional! • Since the relationship of scales is proportional, we can use a proportion to determine missing values • Ex: A set of landscape plans shows a flower bed that is 6.5 inches wide. The scale on the plans is 1 in = 4 feet. What is the width of the actual flower bed?

  8. How to solve • Use your scale factor as the first ratio • Don’t forget to label!!!! • Scale factor is 1 in/4 feet • Your actual measurement is your second ratio • Make sure to line up the units correctly • Actual measurement is 6.5 in/ x feet

  9. Set up the proportion • 1in/4ft = 6.5in/xft • Cross multiply and solve! • X = 26 ft

  10. Determine the Scale The inside of the Lincoln Memorial contains three chambers. The central chamber, which features a marble statue of Abraham Lincoln, has a height of 60ft. Suppose a scale model of the chamber has a height of 4 in. What is the scale?

  11. How to solve • Write the ratio of the height of the model to the height of the actual statue: 4in/60ft • We want the scale in simplest form, so write your new ratio as 1/x • Set up the proportion and solve 4in/60ft = 1in/x 4x = 60 x = 15 ft

  12. Using scales • Antonio is designing a room that is 20ft long and 12 ft wide. Find the lengths of the walls of the scale drawing of the room. Use the scale of 0.25in = 4ft • Your first ratio is going to be your scale .25in/4ft • Your second ratio is what you are trying to find. You will need write a ratio for each length • Xin/20ft • Win/12ft

  13. Cont • Scale.25in = x in Actual 4ft 20ft 4x = (.25)20 4x = 5 X = 5/4 in or 1.25in

  14. Scale.25in = w in Actual 4ft 12ft • 4w = (.25)12 • 4w = 3 • w = ¾ in or .75in

More Related