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Understanding Line Symbols in Technical Drawings: A Guide to the Alphabet of Lines, Study notes of Communication and Presentation Skills

An introduction to line symbols used in technical drawings, explaining their purpose and meaning. 15 different line symbols, including phantom lines, section lines, hidden lines, center lines, and more. Each symbol is described in detail, along with examples of their usage in a hex bolt section drawing.

What you will learn

  • What are the different types of line symbols used in technical drawings?
  • How are hidden lines represented in technical drawings?
  • What is the purpose of phantom lines in technical drawings?

Typology: Study notes

2021/2022

Uploaded on 09/12/2022

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Basic Drafting Skills
Alphabet of Lines
003.03 Identify line symbols
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Download Understanding Line Symbols in Technical Drawings: A Guide to the Alphabet of Lines and more Study notes Communication and Presentation Skills in PDF only on Docsity!

Basic Drafting Skills

Alphabet of Lines

003.03 Identify line symbols

003.03 identify line symbols 0 Alphabet of Lines-Introduction o lines and line symbols used on drawings o drawings are easier to read o good contrast among different line symbols o generally two line widths: thick or thin o all lines are uniform, sharp and black

003.03 identify line symbols 0 Alphabet of Lines o used to show edges of an object o are thick and dark Visible/Object Lines

HEX BOLT 11

SECTION A-A

A 4

A

8

Identify the Number(s) of Object/Visible Line Symbol

HEX BOLT 11

SECTION A-A

A 4

A

8

Identify the Number(s) of Hidden Line Symbol

003.03 identify line symbols 0 Alphabet of Lines o used to show centers of round objects (arc & circles) o thin, long and short dashes Center Lines

003.03 identify line symbols 0 Alphabet of Lines-Summary The alphabet of lines are thick and thin line symbols used on drawings that form a kind of graphic alphabet. Each line and line symbol has a special meaning.