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This Learning Experience can take 4 weeks to build the full-scale model. (Twenty 40-minute class periods). The time it takes will depend upon the skill level of the students. All of the steps to the entire project are given below.
(See Chair Design Instructions for further information):
PRELIMINARY WORK
Some of the preliminary work can be done simultaneously with the other activities listed
below.
(LESSON: web page design & basic HTML)
Set up electronic portfolio pages for future drawings, photographs and journal entries. Conduct research on corrugated cardboard and search for related websites. Bookmark 3 sites.
See the Resources section of this LE for website addresses
OR
add the 3 website addresses found in the Resources
section.
Your choice.
(LESSON: statistical analysis)
Anthropometric data collection.
Teammates measure each other and ergonomic engineers record measurements onto handout. Data is transferred to class measurement sheet for statistical analysis. Ergonomic engineers meet to analyze data and make decisions regarding each measurement for entire class.
(LESSON: video on structural elements and forces and discussion on the relationship to the above and the nature of corrugated cardboard and chair design)
Structural engineers meet and design several 1"x1"x1" cardboard structures and test their strength. Structures should use one, two and three ply corrugated cardboard.
Enter results onto journal handouts and include sketches.
Three thumbnail sketches on handout. Discuss designs with teammates and as a team select favorite (other team members can do thumbnail sketches as well).
(LESSON: isometric drawing, circles, curves and angles)
Isometric sketch on isometric grid paper of selected sketch from above after review with instructor. (product design engineer)
(LESSON: review of anthropometric data and application of data into chair dimensions using trigonometry)
Indicate measurements including angles on isometric sketch. (ergonomics engineer)
(LESSON: model making techniques and safety rules)
Study model in corrugated cardboard at 1/8th scale showing structure (no glue or tape to be used). (all team members)
DRAWINGS
(LESSON: CADD drawing: drawing 3 views)
Top, front, side views: by hand or on CADD software.
No larger than 3/16th scale (3/16" = 1")
Dimension all views.
(LESSON: drawing sections)
Section views (draw one section and another view showing the structure, i.e. back view)
Isometric drawing of chair: pencil on vellum (presentation drawing: no dimensions)
Ink drawing & render blueprint copy in colored pencil.
MODEL
Build full scale model based on drawings above.
(team work)(decoration/designs optional).
CHAIR TESTING AND TEAM SELF- EVALUATION/Teacher Assessment done as a cooperative effort (Chair Design Evaluation Sheet and Chair Design Model Evaluation)
ELECTRONIC PORTFOLIO
Allow five days to update and complete journals and add data, drawings and photos of finished work to web page portfolios.
Allow four days for the Class Presentations in the computer lab.
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