Skip to main content

A Bridge Made of Sticks?

 This is an Action Project for my core class Urban Planning. This unit has been all about bridges, equations, gravity, and Newton's Laws. This action project requires us to make a bridge out of popsicle sticks and glue. We are going to take the bridge and put 1 gallon of water on top of it to see if it will not break. This is an excellent idea because it shows gravity and its effect on objects. Newtons three laws are 1. An object will not change its motion unless acted on by an outside force. 2. F = M x A. 3. Every action has an equal and opposite reaction. With these bridges, we also need to calculate the Potential/Kinetic energies, angles, and lengths of each triangle in the bridge. Below is an image demonstrating the parts of my bridge that experience compression/tension, and all of the important pieces of the bridge. 

CJH/Bridge Visualisation/2021

Calculations:

How many sticks did you use?


At least 60 sticks.


How high will you bridge be when you put a gallon of water on it?


3 feet at least.


Choose one of the triangles of your bridge and measure all three sides.


Side 1: 6 inch

Side 2: 6 inch

Side 3: 8 inch


Law of Cosine: Angle 1


cos C = 6^2 + 6^2 - 8^2 / 2(6 x 6)

36 + 36 - 48 / 2 x 36 = 48.1897 degrees.


Law of Sine: Angle 2


sine 48.1897/6      sine B/6


289.1382 = sine B6


48.1897 = B


Subtract: Angle 3 (a triangle has a total of 180 degrees)


96.3794 - 180 = 83.6206


Potential energy:


.105 kg x 9.8 x 0.9144 = 3.087


Kinetic energy:

½ x m x v^2 = KE



Below you can see the finished product of my truss bridge with the gallon of water sitting on top along with my inspiration bridge. 

CJH/Bridge Holding Gallon/2021

Image result for warren truss bridge | Truss bridge, Warren truss, Bridge construction
Pinterest/Warren Bridge/2020

For my bridge design, it focuses on SDG 11 and the safety/sustainable portion of the SDG (Sustainable Development Goal). This was a very difficult project because of the amount of calculations and portions of this project I had to complete. The building of my bridge took at least a week because it kept falling apart and the glue wouldn't keep it up. I was able to overcome this by placing weights and putting it against a wall. Thankfully my bridge was able to hold a gallon of water without falling. If I could go back and redo a part of this project, I would try and remake the bridge now that I know how to make it sturdier and an easier way to make it. 

Comments

Post a Comment

Popular posts from this blog

South Side Cadence

 This is an action project for my core class Social Entrepreneurship. In this class, we spent the last few weeks taking a deep dive into businesses. Specifically the smaller details about what makes up a business. We focused on how a business functions and also its mission and vision statement. Overall this unit has been interesting as we spent our time researching and learning the ins and outs of how a business can be successful. We were visited by a few FE guests. We heard from Sharon Cho and Felicia (GCE's fundraiser). Both FE's helped me and my classmates get a better understanding about business. For this AP, we were tasked with coming up with our own Social Entrepreneurship business. We took all of the information and data we collected to create an influential and important business. After taking a look at the possibilities of what my business could be, I landed on a Non-profit organization that is an after school teaching program. This program teaches kids music and musi...
Post a Comment
Read more

A Letter To the Government

 This is an Action Project for my core class Policy. During this term, we have been looking at policy and how and what it is. We looked at it in the constitution and also in the government today. We took a look at different policies in Chicago and how they would change the world in a good or bad way. We were also visited by a few FE guests who should us a deeper meaning behind policy and how it can help us in the end for this project. We were visited by Arne Duncan, Akio Katano, the CCHR, and Nick Anderson. Keeping in mind the things they taught us about, we were tasked with finding a policy in Chicago (preferably a new one), and then creating a letter addressed to someone who represents me and my city asking them to advocate for this policy. The policy I chose was about the Anjanette Young Ordinance. This led me to research more into this policy and why what the police did was so wrong. Not just because they broke into an innocent civilian's home, but because they did so against t...
Post a Comment
Read more

Should I Have the Right to Renovate my Own Building Without a Permit?

 This is an action project or my core class A Nation's Argument. This unit was all about the constitution and its amendments. This led to some interesting conversations about which amendments are important and which aren't as important. For example, the third amendment has been ruled as not important because when would a soldier actually come and sleep in your own house. Another argument was how are these amendments related to the problems in the world today? which problems work against the amendments? In unit 1 we visited 1770 and talked about the thesis that "all men are created equal." In unit 2, we visited 1850 and talked about the antithesis of "all men are created equal." For this action project, I was tasked with finding a rule in the city municipal code that I believe is unjust. I chose the rule of needing a permit to renovate the inside of the building you own.  "A building permit is required for now building construction, renovations, the inst...
Post a Comment
Read more