TECHNICAL DRAFTING 1 PART 2

• City of Good Character
• DISCIPLINE • GOOD TASTE • EXCELLENCE
• Writer: Ariel G. Salvador
• Illustrator: Ar-jay B. Relox
• Cover Illustrator: Christopher E. Mercado
• TLE-Information and Communication Technology
• Technical Drafting
• First Quarter-Module 1
• Drafting Architectural Layouts and Details
• Part 2
• Department of Education
• National Capital Region
• SCHOOLS DIVISION OFFICE
• MARIKINA CITY
• This module was designed and developed to provide knowledge and skills in selecting drawing tools, materials, and equipment in accordance with the SOP in technical drafting. On the other hand, the module was collaboratively made to give a variety of learning situations which suited the skills and ability of learners.
• The module is composed of one lesson which is all about Drafting Architectural Layout and Details (AL)- Part 2 - Select drawing tools, materials, and equipment in accordance with the SOP.
• After going through this module, you are expected to: 1. Determine and briefly explain the importance of measuring tools; 2. Identify the different measuring tools and its correct manipulation; and 3. Appreciate the importance of measuring tools in technical drafting as well as in industry today.
• Triangle


  Used for drawing vertical and oblique lines
• Protractor


  Used for measuring and setting angles other than those obtainable with the triangles
• Scale


  Used to reproduce, reduce or enlarge the dimension of size on a drawing
• Ruler


  The most popular type of measuring tool, usually 6 or 12 inches in length, used for measuring sizes and distances
• Divider


  Used for dividing distances into a number of equal parts by the trial-and-error method
• An understanding of measurement is essential for all parts of manufacturing and production technology. Measurements must be uniform so that people have common understanding and application in the production and use of manufactured objects.
• Measuring tools are used for the purpose of measuring dimensions, implementing any work with precision. The measuring tools are also used largely for carrying out different types of measurements.
• Drawing Paper


  Used for drawing
• Erasing Shield


  Used for erasing
• Protractor


  Used for measuring and setting angles
• Measuring tools are essential for examining a finished product or semi-finished product. The inspection or examination operations include checking, or testing an object based on the required dimensions given on a diagram or a sketch. Measurements taken must be accurate.
• 1. Square


  • Used as a guide in drawing horizontal lines and in measuring up to 48" straight lines
• Triangles


  • Used for drawing vertical and oblique lines, the most used are the 45˚ and the 30˚x 60˚
• Triangular Scale


  • Used to reproduce, reduce or enlarge the dimension of size on a drawing, helps a drafter keep the proportions accurate
• Steps in Using a Scale

  1. Place the edge of the scale parallel to the line being measured

  2. Face the edge of the scale that you are reading toward your non-dominant side (if it's oriented vertically) or away from you (if it's oriented horizontally)

  3. Make light marks to indicate the distance you are measuring or drawing out, as measured by the scale

  4. Adjust dividers with the scale by making a pencil line as long as the dividers should be wide, using the scale as a guide. Then adjust the dividers by orienting the points on the ends of the pencil line
• Compass


  • Used to draw circles, arcs, radii, and parts of many symbols
• Steps in Using a Compass

  1. Place the point of the drafting compass at the center point of the circle you intend to draw

  2. Adjust the leaded end of the compass so that it touches where you would like the edge of the arc--or circle--to be

  3. Grasp the middle of the compass between your thumb and fingers. Twist your fingers, applying light downward pressure on the compass to mark out the desired length of arc or circle with the leaded end of the compass
• Divider


  • Similar to the compass in construction, used for dividing distances into a number of equal parts by the trial-and-error method
• Steps in Using a Divider

  1. Align each arm of the dividers so that one point is laying on the start point of the measurement you want to transfer, and the other divider point is laying on the endpoint of that same measurement

  2. Lift the dividers off the measurement you intend to transfer, being careful not to change their alignment

  3. Place the dividers over the location you'd like to transfer the measurement to and make a pencil mark to indicate where each of the dividers' pointers sits
• The importance of measuring tools in creating accurate well measured outputs are
• Identify the different measuring tools and its correct manipulation in technical drafting.
• A measuring tool used to layout an angle or an arc.
• The most popular type of measuring tools, usually 6 or 12 inches in length.