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Engineering/Design

Introduction to engineering/ design where students will build a tower from balsa wood and test the efficiency of the tower.
by

Jeremy Dimpfl

on 17 December 2015

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Transcript of Engineering/Design

Engineering/Design
-Tower Construction-
Possibilities
Design
Test
Build
Specifications and Tips
Process
Reflect
What went well?
Looking back, what would I do different?
Did my tower perform as expected?
Stick Cutter
Wax Paper
Pin Board
Ruler
Straight Pins
21' 1/8"x1/8" Balsa Wood
Graph Paper
Clothes Pins
Elmer's Wood Glue
What we give you:
The Rules:
Height of tower is 7" min. and 12" max.
Top of the tower must be 1" min. to 3-1/2"max.
A hole in the center of the top at least 1"x1"
Width of base is 2"x2" min. and 3-1/2""x3-1/2"" max.
The tower sides are not to extend beyond the vertical edges of the tower base.
Lamination of more than two pieces with the grain running parallel is not allowed.
Testing:
The tower has completed testing when:
The test block has moved 2"or more.
One or more sides separate from the tower base.
The tower separates from the test blocks.
Evaluation:
The tower will be weighed before testing.
An increasing load will be applied with a jack and scale until the tower fails.
The failure rate will be recorded.
The efficiency will be determined by the following formula.
Efficiency= Failure weight x 454(g/lb)
Weight of Structure in grams
Grading Scale by Efficiency
A-5501 and up
B-3501-5500
C-0-3500
Full transcript