# data[].attributes.body
4th Grade GT Class 2019

# data[].attributes.body
Most Beautiful Bridge: to be chosen by a panel of three judges
Most Creative: to be chosen by a panel of three judges

# data[].attributes.body
Strongest Bridge of each length: This will be scaled load tested, if a bridge that weighs 100
grams holds 400 grams, then the scaled load strength of the bridge is 400g/100g = 4 g/g.

# data[].attributes.headline
Loading Hooks that will bear the test weight   

# data[].attributes.subject
Loading Hooks that will bear the test weight   

# data[].attributes.body
Bridge must leave space for the testing apparatus: a flat metal strip that will sit on the base of
the bridge and serve as the loading board. The board distributes the weight along the length of the bridge. The board has a groove running the length of the board; adjustable screws will be inserted at two points through this board to attach the two loading hooks to the bridge, these hooks will bear the test weight.
If students wish to build a curved bridge or bridge that CANNOT accommodate a straight loading platform, the students must leave holes in the bottom of the bridge to allow attachment of screws and hooks.

# data[].attributes.body
Materials:
POPSICLE STICKS
● Cut / notched at any angle.
● Sanded to any width.
● Bent or curved (sticks may be soaked in water ONLY to curve).
● Marked on the face for decoration using only markers, crayons and/or colored pencils.
● Sticks may NOT be altered in the following ways: Soaked in any material besides water;
painted or coated except with markers, crayons or colored pencils on the stick for
decoration only.
ELMER’S WHITE GLUE
● ONLY water soluble white Elmer’s glue can be used as an adhesive.
● Yellow wood glue, or glues containing resin adhesives or other cement binders are NOT
allowed
DIMENSIONS
● Minimum 3 inches tall
● Minimum 3 inches wide

# data[].attributes.body
1. When the students arrive, they will be:
A. Registered with their team name and school
B. The bridge will be measured for length, width, height, and weight. Any bridge not
meeting the requirements will be DISQUALIFIED from winning awards.
C. If the students consent, a team picture will be taken with the students holding their
bridge. The picture will be used for the aesthetic grading.
2. The Bridges will tested tested at one of three testing stations, depending on the length of
the bridge. >12 inches, >18 inches, or >36 inches. The bridge will be tested in the
highest possible category, for example a bridge of length 20 inches would be tested in
the >18 category, and a bridge of 40 inches in the highest category, >36. ALL bridges
must be at least 12 inches long to be tested, as this is a requirement of the testing
apparatus.
3. The bridges will then be tested by loading the bridge with weight from the two loading
hooks as described in detail below.
4. Each team will receive a certificate stating their team name and scaled bridge load result.
5. The winners will be announced the following day.

# data[].attributes.body
http://www.42explore.com/bridge.htm http://pages.jh.edu/~virtlab/bridge/truss.htm
https://www.usbr.gov/lc/region/programs/bridgebuilding/Presentation.pdf

# data[].attributes.headline
Popsicle Bridge Building Competition 2019

# data[].attributes.subject
Popsicle Bridge Building Competition 2019

# data[].attributes.body
BACKGROUND
Bridges have fascinated people since the dawn of time when nature itself built many bridges in
the form of fallen trees over rivers or ancient icicle arches. As technology developed, people
began to build artificial bridges where nature had not. Advances in bridge design, engineering,
and construction have made many types of bridges possible and utilizing numerous materials.
Today, bridges can be of the arch, beam action, cable stay, suspension, or truss type. Materials
used throughout history include wood, masonry, cast iron, wrought iron, concrete, steel,
reinforced concrete, alloy and silicon steel, pre-stressed concrete, carbon fiber, and aluminum.
PURPOSE
To use math and science to implement engineering concepts in the design and construction of a
model bridge from your own plans that will carry a maximum load while using as few craft-sticks
as possible; and, to develop neatness, craftsmanship and creativity.

# data[].attributes.body
Ma'kaio, Joie, Ny'Elle, Alberto

# data[].attributes.body
Maddison, Dayanara, Natalia, Anthony

# data[].attributes.body
Diego, Lucas, Paul

# data[].attributes.body
Sahilo, Richie, Rolando

# data[].attributes.body
Kevin, Lilly, Kaydence, Carson