1 / 15

Fundamentals of Engineering

Fundamentals of Engineering. Scales and Scaling. Scales and Scaling. Goals Understand units and measures Understand concepts of scaling and types of scales. Units of Measure. Measurement of Length and Angle are used in Engineering Length English - Inches, unless otherwise stated

saxon
Télécharger la présentation

Fundamentals of Engineering

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. Fundamentals of Engineering Scales and Scaling

  2. Scales and Scaling Goals • Understand units and measures • Understand concepts of scaling and types of scales

  3. Units of Measure • Measurement of Length and Angle are used in Engineering • Length • English - Inches, unless otherwise stated • Up to 72 inches – feet and inches over • SI Units – millimeter, mm • Angle (angular measurements) • English - Degrees, minutes, seconds (60° 30’ 20”) • SI Units - Degrees in decimal (60.53°)

  4. Terms and Definitions - Scaling • Scaling a drawing is a process for making an object fit the dimensions of the display media (e.g. paper) • Scales are tools used to scale a drawing while creating it – a conversion factor is built in

  5. Length Measurements in English Units Three Common Types (Labels) for Scales

  6. Types of Scales by Presentation Open-divided Full-divided

  7. Types of Scales (Tools) by Construction Up to 12 scales On a triangular scale

  8. Architect’s Scale – • Major Unit = 1 foot • Subunit = inches • Civil Eng. Scale – • Major Unit = 10’s of feet • Subunit = tenths of major unit • Mech. Eng. Scale – • Major Unit = 1 inch • Subunit = fraction of an inch

  9. Use a Scale to Measure, But Not To Draw Lines

  10. Mechanical Engineer’s Scale

  11. Practice Problems What is the dimension shown? Answer: 1' 9" Scale: 1 ½ inches = 1 foot

  12. Practice Problem Scale: 1 in = 200 feet What is the dimension shown? Answer: 450 feet

  13. Decimal Inches Full Scale Millimeters Full Scale 1 2 Fractional Inches Half Scale Fractional Inches Full Scale 3 4 Compound Scale

More Related