My Most Recent Sketch

I sketched up this Southern Colonial house while studying different house styles in my Architecture CAD class. I was surprised with the outcome; enjoy looking at it yourselves!

Construct your own Dome

Heres a fun and challenging project I found that I've tried out, and even though it took a really long time, it was fun and worth it in the end. Try it out for yourselves! 

Abstract

Geodesic domes are made of interconnected triangles that approximate the shape of a sphere. This project shows you how to build a geodesic dome using rolled-up newspapers and tape. How much weight do you think your dome will support? Build one and find out!

Objective

The goal of this project is to build a geodesic dome using struts made from rolled-up newspaper. You will determine the strength-to-weight ratio of the resulting dome.

Introduction

A geodesic dome is a structure made of interconnected struts that approximate the shape of a sphere (or hemisphere). The struts are joined together in triangles, with the vertices of the triangles designed to fall approximately on the sphere. The struts form a rigid network that transmits stress forces throughout the structure. The sides of the triangles form great circles (geodesics) over the surface of the sphere. (Wikipedia contributors, 2006a)

Geodesic domes have some very interesting properties. Since the structure approximates a sphere, geodesic domes have very high surface-to-volume ratios. In fact, geodesic domes enclose more volume per unit weight than any other man-made structure made from linear elements. They are also the only known man-made structure that increases in strength as the size of the structure is increased. (Wikipedia contributors, 2006a)

While you are doing your background research for this project, you should spend some time reading about Richard Buckminster Fuller, who named, patented, and popularized geodesic domes. He had a lot of interesting ideas for maximizing efficiency in design, trying to do "more with less."

In this project, you will build a geodesic dome using tubes made from rolled-up newspaper, taped together.

Questions

• How much weight do you think your dome will be able to support?

Materials and Equipment

To do this experiment you will need the following materials and equipment:

• many newspapers,
• masking tape,
• measuring tape,
• markers,
• many magazines (for strength testing),
• optional: glitter, beads, and glue for decorating.

Experimental Procedure

1. Stack three flat sheets of newspaper together. Starting in one corner, roll the sheets up together as tightly as you can to form a tube. When you reach the other corner, tape the tube to keep it from unrolling. Repeat until you have 65 tubes.
   
2. Now cut down the tubes to make 35 "longs" and 30 "shorts."
   1. Longs: Cut off both ends of a tube until it is 71 centimeters long. Use this tube as a model to create 34 more longs. Be sure to mark all the longs clearly in some way, such as with colored marker at each end, so you can tell them apart from the shorts. Decorate the tubes if you like.
   2. Shorts: Cut off both ends of another tube until it is 66 cm long. Use this tube as a model to create 29 more shorts. Decorate the tubes if you like.
   
   
3. First, tape 10 longs together to make the base of the dome.
   
4. Tape a long and a short to each joint. Arrange them so that there are two longs next to each other, followed by two shorts, and so on, as shown below.
   
5. Tape the tops of two adjacent shorts together to make a triangle. Tape the next two longs together, and so on all the way around.
   
6. Connect the tops of these new triangles with a row of shorts. The dome will start curving inward.
   
7. At each joint where four shorts come together, tape another short sticking straight up. Connect this short to the joints on either side with longs, forming new triangles.
   
8. Connect the tops of these new triangles with a row of longs.
   
9. Finally, add the last five shorts so that they meet at a single point in the center of the dome. You might need to stand inside the dome to tape them together.
   

Questions

1. How much does the dome weigh?
2. How strong is it? To test your dome's strength, see how many magazines you can load on top. Adult supervision is recommended for this step. Add magazines gradually. Observe the dome carefully for signs of impending failure.
3. What was the strength-to-weight ratio of the dome?
4. Did the results surprise you? Why or why not?
5. What was the hardest part about creating the dome?

Variations

• What part of the dome failed during strength testing? How could you strengthen this part (or parts)? Would different materials or a different method of fastening the parts together make the dome stronger? Try your proposed solution and see if it works.
• How could you make your dome stronger without interrupting the space underneath it? Make a prediction and test it.
• Can you use the same materials to make another structure, with a different shape, that is as strong as the geodesic dome? What shape did you choose for your structure? How much does it weigh? How strong is it? What is its strength-to-weight ratio? How do these measurements compare to those that you made for the geodesic dome?
• For a much more advanced project, you could try designing your own geodesic dome. The Bibliography lists several references to help you get started (Anderson, 1998a; Anderson, 1998b; Kenner, 2003; Landry, 2002).

Credits

Edited by Andrew Olson, Ph.D., Science Buddies

Sources

This project idea, including the experimental procedure and construction images, is from:

• WGBH Staff, 2000. "Building Big Educator's Guide, Activity: Geodesic Dome Handout" Educational Print and Outreach Department, WGBH Educational Foundation [accessed June 12, 2006] http://www.pbs.org/wgbh/buildingbig/educator/act_geodesic_ho.html.

How to Make a Burning Book

Ok, so I've been searching for more entertaining projects to share with you guys and I came across and really cool "magic" trick you'll be able to create by yourselves if you follow these simple steps. It's the burning book. This project really doesn't have to do with engineering but I thought it was in the neighborhood.

1. Get your materials: 
     - Glue
     - Thick Book
     - X-acto Knife
     - Scissors
     - Cheap Foil Pie Pan
     - Tissues
     - Lighter


2. This step is very tedious, but worth it in the end. You are now going to glue together every page of the book you are using, making sure the pages stay smooth and flat. 


3. Then, after the glue dries, cut a square hole through the pages of the book all the way to the back cover, but do not cut the back cover. Keep the front cover open during this process. Don't cut that either.

4. Next, bend apart the foil pan and cut it to the size of the height and width of the book and then bend it in and around the hole you made in the pages. Glue this down as well.

5. Then, take a more foil and line the inside of the front cover with it, once more gluing this down.

6. Finally, ball up a couple of tissues and put them inside of the foil hole inside of the book. Light the tissue on fire and close the cover.

7. Wow your family and friends by opening the book cover, revealing the flame inside, and making it look like a "burning book".

WARNINGS: Make sure the whole inside is lined with foil and no paper is exposed. Do not expose flame near clothes, hair or anything that could light on fire above it as well.

IMTS Trip

This past September, I took a field trip with my Engineering Class to the International Mechanics and Technology Show at the McCormick Place. The IMTS show is a place for companies from all over the country to come and display their latest gadgets, machines, and factory equipment. It was so cool to see all the equipment and even aircraft that huge companies like Boeing use and design. It really is something to aspire to; designing something as advanced and useful as these multi-million dollar gadgets one day!