Engineering Drawings

Question 1

What is the purpose of an Engineering Drawing?

Answer 1

To show the tradesman in a clear and unambiguous way, precisely what the designer of the equipment requires in order to complete the work.

Question 2

State four different types of lines used in Engineering Drawings?

Answer 2

Common types of lines used are as follows;

• Continuous Thick Line.
• Continuous Thin Lines.
• Continuous Thin Irregular & Straight with Zigzags.
• Dashed Thick & Thin Lines.
• Chain Thin, Thick at Ends & Changes of Direction.
• Chain Thick.
• Chain Thin, Double Dashed.

Question 3

What is the purpose of a Sectional View?

Answer 3

Used to show the important features of an object which cannot normally be seen

Question 4

When would “Interrupted Views” be used in Engineering Drawings?

Answer 4

When it would otherwise prove a waste of time and space to draw in every detail, therefore an interrupted view would be used to shorten views of long uniform parts.

Question 5

How are Masts and Towers denoted on Engineering Drawings?

Answer 5

Masts and Towers are denoted on Engineering Drawings as;

• A basic circle for a Mast,
• A Basic Square for a Tower.

Question 6

What information would be found within the Title Block of an Engineering Drawing?

Answer 6

The Title Box consists of the following;

• Drawing Title
• Drawing Number
• Producer of Drawing
• Scale

Question 7

What precautions should be observed to ensure the care of drawings?

Answer 7

Care of Drawings

• Lay drawing flat to read.
• Keep clean and dry.
• Do not make alterations without prior authorization.
• Do not take into the field unless absolutely necessary.
• Refold using original folds and ensure that the drawing number is outermost.