BRIDGE DESIGNS

PROBLEM STATEMENT

• Which bridge design holds the most weight?

WARREN

BALTIMORE BRIDGE

HOWE BRIDGE

K-TRUSS BRIDGE

PRATT

VARIABLES

The materials

• Toothpicks
• Liquid glue
• Graph paper
• Bungee cord
• Poster board
• Sealing wrap
• Bucket
• Weights
• Scale
• Bridge templates
• Two tables

PROCEDURES

• Gather materiasl
• Draw bridge on graph paper
• Glue graph onto poster board
• Place sealing wrap over graph
• Glue toothpicks together using graph paper as a guide
• Let the glue dry for 10-15 minutes
• Take off the bridge in one piece
• Repeat steps 5-7
• Make a bottom design with the toothpicks and connect the 2 sides
• Make a top design or pinch the sides together

CONTINUED PROCEDURES....

• Attach bungee cord to the bottom of the bridge
• Place the end of the bridge onto one table and the other end onto the other table. Let the bungee cord hang down
• Attach a bucket to the bungee cord
• Place weights and other heavy items into the bucket until the bridge breaks
• After the bridge breaks take the bucket of items and put it on a scale.
• Then you see what bridge held the most weight

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CONCLUSION