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Copy of Northern Highlands HS Applied Tech_Doc/Presentation Templet

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Matthew O'Neill

on 30 January 2013

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Transcript of Copy of Northern Highlands HS Applied Tech_Doc/Presentation Templet

The Big Tower That Couldn't Thank you for your attention! We need to make a tower that was at least 39 inches tall.
Could support 15 pounds for 15 seconds.
Could withstand an earthquake with a magnitude of 8 while supporting a 2.5 pound weight.
In the design we put in cross braces for each layer on every side.
The new tool that we used was the Balsa wood sticks. The forces acting on the tower are tension, compression, sheering, and torsion
Cross beams prevent compression as well as sheering
If the tower cannot support it's own weight it's joints may not be strong enough
The base supports most of the tower's weight
When weight is added to the top compression, tension, torsion, and sheering are created.
Towers are dependent on where they are placed in the event of added weight or earthquakes (which we had trouble with on our tower).
The tallest of towers are made of light materials.
Towers that are top heavy have to use stabilizers.
Most Towers are made to adapt to the enviroment that the tower is in, our tower wasn't correctly balanced so it collapsed because of weight misplacement. Identify the Problem Research Develop Alternative Solution
The design we chose was thought to resist the four forces acting on the tower during testing.
Tension, Compression, sheering, and Torsion.
We designed it to resist torsion
We balanced out the tower to resist sheering
We attempted to resist compression by making the tower strong
We distributed weight evenly to resist tension Select the Best Solution Build It snapped at the bottom, where the weight had been misplaced on that leg in particular.
If the weight was placed evenly it probably would have stayed up.
his was one of 3 towers that had broken in our class.
The top layer of the building worked very well on our tower.
The base didn't work the way we wanted it to.
I would redesign the base of our tower in a very different way Evaluate and Redesign Prototype Test Analysis The total height of our tower was 41 1/4 inches an weighed approximately 242.3 grams.
Our design stayed within the boundaries of the criteria and our tower exceeded the minimum height of 39 inches by 2 1/4 inches.
Our tower did not hold the 15 pounds.
The base leg broke because of uneven placement of the weights and it wasn't strong enough.
We need to change the base of tower by making it stronger so it is able to hold all the force being put on it. That is a glue technique that is similar to a staple This is our base The start of our first floor Two floors complete and third in progress With three floors complete we add a beam going up the middle Four floors complete and we add more beams for every floor The finished product An inside view of the tower We focused on making a strong base
Sheering was our downfall
We did cross bracing
The weight was focused to one side
The middle wasn't strong Original prototype Completed tower Video of prototype test Video of finished tower test The tower after holding 15 lbs for 10 seconds Balsa wood sticks
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