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Bridge
Each groups of 3 students will be supplied with
a sheet of graph paper to design their brodge. Once the design is complete,
they will be given 8 sticks of 3'x1/8"x1/8" balsa wood and colored glue.
Students will have a limited number of days to construct their bridges.
Specifications:
• It has to span a 30 cm (12") gap.
• The roadbed needs to support a 5 cm square
load block with a cord running down the center.
• Plans will be drawn on an 11x17" sheet
of graph paper, at a 1:1 scale. both side and top views are required.
Draw 1/8" bars, not lines, for better accuracy if you glue on top of the
design.
• DON'T glue directly on the plans.
Bring a sheet of cardboard from home (at least 11x17"), then put the plans
on top, then a sheet of wax paper, and then glue the pieces together on
top. The cardboard will allow you to move your project and you can
hold the sticks down using pins.
• ONLY the balsa wood and glue provided
by the instructor is to be used for construction.
Testing:
• A cord will extend from the load block
down to a pail. Sand and weights will be added to the pail until the tower
fails or a maximum of 20 kg is reached. The more weight held means a higher
score.
• Students will receive one grade for completing
the project as assigned and a second grade based on competition.
Fall 2006
Previous Competitions:
• Spring
2005
• Fall
2003
• Spring
2003
• Fall
2002
• Spring
2002
• Fall
2001
• Spring
2001
• Fall 2001 |
Tower
Each groups of 3 students will be supplied with a
sheet of graph paper to design their tower. Once the design is complete,
they will be given 10 sticks of 1/8"x1/8" balsa wood and colored glue.
Students will have 4 days to construct their towers.
Specifications:
• It has to be 30 cm (12") tall.
• It has to fit over a hole 20 cm (8") square.
• The top needs to support a 5 cm square
load block with a cord running down the center.
• ONLY the balsa wood and glue provided
by the instructor is to be used for construction.
• Plans will be drawn on an 11x17" sheet
of graph paper, at a 1:1 scale. both side and top views are required.
Draw 1/8" bars, not lines, for better accuracy if you glue on top of the
design.
• DON'T glue directly on the plans.
Bring a sheet of cardboard from home (at least 11x17"), then put the plans
on top, then a sheet of wax paper, and then glue the pieces together on
top. The cardboard will allow you to move your project and you can
hold the sticks down using pins.
Testing:
A cord will extend from the load block down
to a pail. Sand and weights will be added to the pail until the tower fails
or a maximum of 20 kg is reached. The more weight held means a higher score.
Students will receive one grade for completing
the project as assigned and a second grade based on competition.
Previous Competitions:
• Fall 2000 |
