Introduction
During this project you will be introduced to and asked to create Technical Drawings. Technical drawing, also known as drafting or draughting, is the technique of creating engineering drawings. A skilled practitioner of the art is known as a draftsman or draftsperson (or draughtsman, draughtsperson). Some of you may choose to pursue a career in engineering or drafting after graduation. This unit will introduce you to a particular element of Technical drawing that you will find challenging, informative and may spark your interest in this particular career field.
For this project you will be introduced to orthographic and isometric drawings. Orthographic refers to drawings that are represented in two dimensions such as the elevation markings on a map. Isometric refers to the creation of three dimensional drawings that show length, width and height in equal proportion. An example of each type of drawing is shown below. The object on the left is the orthographic representation of the object while the figure on the right shows it in an isometric form.
Example
As a way of introducing Technical Drawing, you will be expected to research technical drawing with the intention of finding out how to create a blueprint of a wooden object. Once completed, someone else should be able to take your group's blueprint, and without ever seeing the object, be able to build one identical to it.
Task
Your Project Manager (Lets call him Mr. Godfrey) has a new project. He has a prototype object in his office that he needs to have blueprinted ASAP. This is a critical assignment that could have impact on the entire company, so he needs to make sure his design is blueprinted correctly. He has given this responsibility to your design team.
Not wanting to let Mr. Godfrey down, and not wanting to let him know that you aren't sure how to create the blueprint, your team will set out to research blueprints and create the blueprint he requires.
Each of you must select a partner to complete your design team. One of you will become the team leader and your goal will be to ensure that all the appropriate research is completed and the report gets passed in on schedule. The second team member will become the team architect who will be responsible for ensuring the blueprint is completed according to specification. You are expected to work as a team to complete this project, and help each other to get everything completed.
Process
Part 1. Technical Drawing Report
Your team has decided that the best place to start is with research on technical drawing. Your team leader will make sure a report is delivered to Mr. Smith that shows your team is knowledgeable and therefore capable of taking on this blueprinting task. Some of the major points you will want to consider for this report are outlined below.
Step 1. Research on Technical Drawing
Until you become familiar with technical drawing there is no way you are going to create your blueprint on time. The first step is for your team to investigate the line types most commonly used in technical drawings. Make sure your research outlines the most commonly used types of lines in technical drawing and the purpose for each.
Step 2. Determine the types of drawings included in a Technical Blueprint
Blueprinting is a standard way of providing technical information in a visual form. Now you need to determine which types of drawing are used in Technical Drawing.
Step 3. What about scale?
Now you know all about technical drawing, but the object you need to blueprint is bigger than the paper provided. How will you make it fit on the page.
Step 4. Reading a Blueprint.
Before you go about creating your own blueprint, it is necessary to make sure you are able to interpret blueprints correctly.
Part 2. Putting it all together.
Now your team is ready to start creating their blueprint. Use all the skill and knowledge you've gained through this process to create the required blueprint. A picture of the object can be seen here but you will need the actual object in order to measure and scale it. Good Luck - Mr. Godfrey is counting on you.
Objective:
Students should be able to do the following:
apply the knowledge of communications graphics to a practical application of technical drawing. Students will produce a technical drawing (blueprint) of an object based on the knowledge and experience gained from this project.
Outcomes that are addressed:
* Demonstrate understanding of the purpose of technical drawings (in everyday life) by creating a blueprint.
* Use the language and terminology of communications processes and communications tools.
* Identify specific examples of isometric (pictorial) and orthographic drawings.
* Interpret and describe the basic components of simple 2-dimensional and 3-dimensional technical drawings.
* Demonstrate an understanding of the basic principles utilized in technical drawings (e.g. alphabet of lines, dimensioning and symbols.)
* Develop simple 2-dimensional and 3-dimensional representations that employ the basic principles of technical drawing.
Multiple Intelligences provided for:
* Logical/Mathematical - Much of the work on the blueprint will involve calculation of angles and line lengths and transferring them into a visual representation on paper.
* Visual/Spatial - The ability to think in images and pictures permeates this project. It is a great fit for this project and is usually highly developed in artists, architects, designers and sculptors.
* Interpersonal - Has a huge role to play in this project. Working with a partner in a problem situation is at the heart of this activity and how partners interact will impact on how successfully the project is completed.
* Verbal/Linguistic - Verbal skills are developed through the research phase of this activity. Requiring that a report be submitted to the Project Leader ensures that consideration is given to creating a well written summary of the theory of technical drawing.
SCALE QUIZ
1. The scale drawing of an artist's work has a scale of 1 inch =
18 inches. Find the size of the original work.
A. 5 feet by 6 feet B. 20 inches by 36 inches
C. 33 inches by 27 inches D. 90 inches by 108 inches
Hint
2. Mike has an assignment to construct a scale drawing of an outdoor chair. He plans to use the scale 1 inch = 4 inches. If the height of the chair is 16 inches, how tall should it be in the drawing?
A. 4 inches B. 2 inches
C. 6 inches D. 8 inches
Hint
3. A Titan rocket is 80 feet high. For his science project, Joe will build a scale model of the rocket. How tall will his model be if he uses the scale 1 inch = 5 feet?
A. 15 inches B. 13 inches
C. 16 inches D. 14 inches
Hint
4. Monifa made a scale model of a helicopter. If the scale is 1 in. = 3 ft, and the model is inches tall, how tall is the actual helicopter?
A. ft B. ft
C. 15 ft D. ft
5. Annette is making her own movie with the family video camera. She wants to use a ''stunt Fluffy'' to do a special effects scene in which her dog Fluffy appears to fly. The scale for the stunt Fluffy is 1 in. = ft. If Fluffy is feet tall, how tall will stunt Fluffy be?
A. in. B. in.
C. in. D.