How to Build a Bridge By: Katie Hoge

Materials:

  • 1 bottle of Elmers Glue
  • 265 sticks minimum
  • A small box of paperclips
  • 5-10 super-stretchy rubber bands (tight ones bend parts of bridge)
  • 4 empty winter bottles, or things with width of water bottles
  • Newspaper

Steps:

  1. Lay newspaper out flat on flat surface
  2. Prep your supplies (Lay them out so they are within reach)

Bottom Support Beam

  1. Lay down 2 rows of 7 sticks, end to end
  2. Place of glue in middle of each stick
  3. For a new layer, take new stick and place a tip on each dab of glue
Step 3 From Above

Top Support Beam

  1. Lay down 2 rows of 9 sticks, end to end
  2. Place a dot of glue in the middle of each stick
  3. For a new layer, take new stick and place a tip on each dab of glue

Side A

  1. Once a row of the 7 sticks and a row of 9 sticks is dry, place 70 sticks side by side across your rows of sticks, only as long as 7 sticks, leaving almost a full stick empty
  2. Securely glue to both rows of 7 and 9

Side B

  1. Take 2 sticks and glue the tops together to form a bottomless triangle
  2. Make sticks far or close enough apart to be able to fit 5 of these triangles
  3. Allow triangles to dry

Side B (Continued....)

  1. Glue top of triangles to row of 9 and bottom ends to row of 7
  2. Allow time to dry
  3. Use paperclips to ensure triangles stay with the rows long enough for them to dry
  • May need help with next step

Connecting Sides A and B

  1. Place water bottle (or something of same width) between sides A and B
  2. Put a rubber band on each side
  3. Repeat steps 1 and 2 with three more water bottles going along sides

Stabalizing the End Sticks

  1. Take the long sticks on the top and sandwich 2 sticks to be parallel on the top and bottom
  2. Glue and tie rubber bands around the sticks
  3. Repeat steps 1 and 2 for other three end sticks

Connecting the Tops of Sides A and B Together

  1. While bridge is standing upright with water bottles between sides A and B, place dabs of glue about an inch apart along top of the sticks
  2. Before glue can dry, place sticks (Ranging from 22-25) across the top, going around the water bottles. The gaps left will be taken care of later.
  3. Allow time to dry

Connecting Bottoms of Side A and B Together

  1. Sides should be set in place by now, but in case not, place water bottles back in after flipping bridge upside down (already connected side face down)
  2. While bridge is standing upright with water bottles between sides A and B, place dabs of glue about an inch apart along top of the sticks
  3. Before glue can dry, place sticks (Ranging from 22-25) across the bottom, going around the water bottles
  4. Allow time to dry
(Same as last picture since it is same steps except on bottom)

Filling in Water Bottle Gaps

  1. Flip back to right side up (Longer sticks on top)
  2. Remove water bottles
  3. Fill in water potter holes with same steps as before
  4. Allow time to dry

Breaking the Bridge

  1. Place long ends of bridge between a 30 inch gap and apply weight until it breaks
  2. Congrats! You built and destroyed your bridge!

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