For round two of the bridge design project we will be doing much the same thing as before, except bigger and better! Taking into consideration what you learned from when your first bridge broke, you will complete the following bridge design project.
When you are finished and your bridge is reduced to rubble, complete the following word document and submit it at the link below
In the spirit of the cyclical nature of the Engineering Design Process and to allow you to practice your bridge breaking/building skills (and to let me test out some of the logistics for the real bridge project), we will first have a test day before we start our OFFICIAL bridge building contest. The prompt for this mini-project is as follows:
When you are finished and your bridge is reduced to rubble, complete and printout the following word document to prepare you for the REAL bridge project.
*structural efficiency = live-load**/dead-load***
**live-load = the weight the bridge holds
***dead-load = the weight of the bridge
Complete the following vocab sheet either as a hand-written print-out or on your computer.
-Bridges Notes: bridges_notes.pdf
-Vocab Sheet to complete: bridge_vocabulary.doc
-Bridges Presentation: bridgepresentation.doc (complete this worksheet with a partner and then prepare a presentation over your selected bridge)
-SUBMIT YOUR BRIDGES PRESENTATIONS HERE: (or print it/keep it saved)
-Bridge Designer is a fun little software to practice bridge design. You can customize the constraints of the problem, the materials and cost of your bridge as you set out to design a bridge to drive a vehicle across a raging river. Bridge Designer is installed on all of your computers (allegedly). A quick video showing how to use Bridge Designer is here: youtu.be/3PoDk-dSPz0
-The following link has a fun little interactive flash activity to illustrate some of the physics in bridges. There's nothing you need to turn in relevant to this, but it could be helpful for your understanding: http://www.pbs.org/wgbh/buildingbig/lab/index.html
ASCE Infrastructure Report
Read through the American Society of Civil Engineers Infrastructure report and complete record your findings on the "Infrastructure Report Card" word document below with a partner. When you finish, submit your word document (or record your answers) on the google form link below.
-ASCE Report Card Link: http://www.infrastructurereportcard.org/
-Word Document to complete: infrastructure_report_card.docx
-Google Form to submit your answers:
-The following link has a fun little interactive flash activity to illustrate some of the physics in bridges. There's nothing you need to turn in relevant to this, but it could be helpful for your understanding:
In case you somehow missed the message, the Mechanical Engineering unit test will be this coming Monday (10/8). It will be open note, so any notes or material you have on paper are fair game during the test. Of particular help will be the review packet you got today (which is also attached here) and the Venn diagram notes on materials from ~3 weeks ago.
More CAD! (It won't be too bad though, I promise). AutoCAD becomes especially useful when making 3D drawings of objects. A full understanding of these can be quite a lot to take in, but we are going to look at a couple common types of 3D drawings: Orthographic and Isometric drawings.
notes on 3D drawings: notes_3ddrawingstypes.pdf
Wireframe Drawings - Our first "rEal" 3d Drawing
In just about any engineering or technical field you might go into, you have a good chance of encountering CAD (Computer-Aided Design) drawings. Simply put, this allows for highly precise digital "sketches" of structures, tools, or other parts and is especially useful for design and prototyping. We're not looking to become experts in CAD in this course, but having a basic familiarity with AutoCAD (a common name-brand CAD software which is installed on our computers) is a useful skill for anyone thinking of working in a STEM field.
AutoCAD is especially useful for 3D designing, but in the spirit of crawl-walk-run we will first learn some of the basics in 2D. To do this, open AutoCAD on your computer and follow along with the following lessons. A good pacing is to plan on completing lessons 1.1-1.4 on Wednesday, 1.5-1.8 on Thursday, and then work on the project on Friday.
PowerPoint notes from day 1: whatiscad.pdf
Lesson 1.1 - Introduction to autocad
Lesson 1.2 - Introduction to drawing and modifying
Lesson 1.3 - Trim/extend/offset/osnaps
Lesson 1.4 - Accurate Inputs
Lesson 1.5 - Lesson 1.7
Lesson 1.8 - Adding dimensions
2d Cad project - Make your own Design
For this project you will be putting your skills in AutoCAD to use. To do this, make any design or drawing of your choosing, as long as it meets the following conditions:
As a reminder, the mousetrap car race will occur on Tuesday (tomorrow). In addition to your completed vehicle, by the end of the day Tuesday your group will need to turn in (1) some form of design work and (2) some form of documentation. The exact nature of the design work and documentation is up to interpretation for whatever you think is appropriate as long as it has specific designs/sketches and pictures of your actual vehicle, however, if you would like some guidance on this I created a couple templates you can go off of:
Template/Example for mousetrap vehicle design work:
Template/example for mousetrap vehicle documentation:
I will be out this afternoon (I will still be in the school, just in meetings in other rooms) and so we will have a substitute. Because I will not be in the classroom and to not stress out the substitute, there will be no tools being used and as such work on the Mousetrap cars will be put on hold. Instead, you will get to work on your historical technology assignment. IF(!) your work on the mousetrap car involves no use of tools (with the exception of hot glue) you may work on your mousetrap car. Details about this historical technology project can be found under the Engineering resources tab, but I am also putting them here:
-Objective: Complete a presentation as a group of 2 or individual over a historical technology. This historical technology can be anything, such as: fire, a wind turbine, the first automobile, a fidget spinner, a steam engine, the first MAC, etc... Then, create a model or prototype of this technology. There will be no one day when everyone presents their project, but instead each student will have to present their project on one day before the semester is over.
note: there are three parts to this project: 1. Completing a PowerPoint presentation with slides that address each of the criteria on the rubric, 2. Making a model of the technology, and 3. Presenting your project. A good goal for today will be to mostly complete the PowerPoint presentation and then we will pick up the rest another day. The second part about making a model is a new aspect added to this project. If you can get started on this feel free to, but otherwise you can save this for another day.
Hope y'all have a good day and I look forward to seeing you on Friday. Sorry for the short notice on this! I read my calendar wrong and had thought I was going to be out on Friday not Thursday. If you have any questions, I am giving the substitute my phone number and they can call/text me as I will still be in the building.