Fundamentals of Engineering – Honors – ENGR H191 Lecture 5 - Cadkey1 Question of the Day What is the Name of the Bridge in this Clip? ANSWER: The Tacoma.

Lecture 5 - Cadkey 1

Fundamentals of Engineering – Honors – ENGR H191

Question of the Day

What is the Name of the Bridge in this Clip?

ANSWER:

The Tacoma Narrows Bridge

Bridge.mpeg



Question of the Day (Part 2)What was the Cause of the Failure?

ANSWER:

A lack of damping in the design



Topics For Today

Scales and Scaling

Alternate Views

CK5 Problem #2 – Title Block

Quiz – Multi-view and pictorial drawings



Scaling a Drawing

Scaling a drawing is a process for making an object fit the dimensions of the display media

Scales are tools convenient to use when creating a drawing with a standard scale (conversion factor)



Types of Scales

Architect’s A measurement = 1’ 0” typically,

divisions are feet and inches

Civil Engineer’s 1” = 10’s of feet, divisions are 0.1’

Mechanical Engineer’s Some unit – 1”



Architect’s Civil Engineer’s Mechanical Engineer’s

Scales Scales Scales

Full size 1” = 0’1” 1” = 10.0’ 2” = 1”

Quarter size3” = 1’-0” 1” = 20.0’ 1 ½” = 1”

One-eighth 1½” = 1’-0” 1” = 30.0’ 1” = 1”

One-twelfth 1” = 1’-0” 1” = 40.0’ 3/4” = 1”

1/2” = 1’-0” 1” = 50.0’ 1/2” = 1”

3/8” = 1’-0” 1” = 60.0’ 1/4” = 1”

1/4” = 1’-0” 1” = 80.0’ 1/8” = 1”

3/16” = 1’-0” 1” = 100.0’1/8” = 1’-0”3/32” = 1’-0”

Three Common Types of Scales



Architect’s Scale –Major Unit = 1 foot Divisions = inches

Civil Eng. Scale –Major Unit 1 inch = 10’s of feet

Divisions = tenths

Mech. Eng. Scale –Major Unit = 1 inch Divisions = fraction of an inch



Example Uses


Fundamentals of Engineering – Honors – ENGR H191Types of Scales by Construction



Open-divided

Full-divided

Type of Scale by Presentation



Your Scale



Conventional and Alternative View Arrangements

Review of “Conventional” Arrangement

Demonstration of “Alternative” Arrangement for Right Side View


Fundamentals of Engineering – Honors – ENGR H191Convention on Labeling of Views


Fundamentals of Engineering – Honors – ENGR H191Conventional Arrangement of Views


Fundamentals of Engineering – Honors – ENGR H191Unfolding of Coordinate Planes - Conventional



R 1

R 2

Alternate Arrangement of Views for the Right Side


Fundamentals of Engineering – Honors – ENGR H191Alternative Arrangement Views



Border Line

Title Block

Today’s CADKEY Project (CK5 #2)



Establish a File Name Format– i.e. EG H191 Proj #1

and/or EG H191 Dwg #7

Title Block Information



Parts and Patterns

The borderline and title block are saved as a pattern file so that they may be added to a part file. A part file can be composed of one part and multiple patterns. The reverse is not true. Once you have done your title block you can use it again and again by simply changing the title, date, Dwg # and File Name.



Today’s Assignment

Dwg 9 – CK5 #2 Title Block and Patterns with CAEG Due at end of class today

Dwg 10 – ML-1 Missing Line Problems with pictorials

Use Multi-view Sketch Paper and/or Isometric Sketch Paper

Due at beginning of the next lecture

Fundamentals of Engineering – Honors – ENGR H191 Lecture 5 - Cadkey1 Question of the Day What is the Name of the Bridge in this Clip? ANSWER: The Tacoma.

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