UMHB ENGR 1310 - Bridge Design Competition—Specifications, Procedures, Timetable Design Project (DP)

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EGR 1301: Bridge Design Competition—Specifications, Procedures, TimetableDesign Project (DP) will count 12.5% of Final GradeSpecifications: Each bridge will be placed on supports whose inside edges are 14” apart. The supports are 0.5” square bars so it is recommended that your bridge be at least 15” long. The loading fixture that will be used is attached and drawn to scale and is attached. It consists of three loading bars that are each 0.5” square x 4” in length. The distance between the loading bars (edge to edge) is 3.25”. The outside edge to outside edge dimension is 0.5”+3.25”+0.5”+3.25”+0.5” = 8.0”. You may design your bridge so that it is loaded by one, two, or all three loading bars. Your bridge should be approximately 3” wide and definitely not more than 4” wide, lest the loading blocks pass inside of the bridge withoutloading it. Procedures1. The first step will be the individual design of your bridge. You will begin this step during your lab period the week of September 19th. Your bridge will be evaluated on the basis of the load to failure in pounds divided by the weight of the wood in grams. The bridge must be at least 15” long. It will also be evaluated for the easy of construction, as measured by the number of members that are required to build it, where fewer are better. Due Date: beginning of lab period the week of September 26th. 15% of DP grade.2. The second step will the development of a team bridge design, drawing from the best ideas in the individual designs and possibly coming up with new and novel ideas as well. The criteria for evaluation will be the same as for step 1.Due Date: beginning of lab period the week of October 10th. 15% of DP grade.3. Step three will be the building of your prototype bridge during lab the week of October3rd, with additional time as need for completion to be outside of lab. Due Date: beginning of lab period the week of October 17th. 4. Step four will be the testing of the prototype bridge during lab the week of October 17th. After watching the failure of your bridge as well as the bridge of others, you will prepare a report indicating what precipitated failure in your bridge and what you learned about your bridge design and construction that can be improved in the final build. You will also have a section of your report where you discuss the failures of other bridges and what you learned from watching the testing of the other bridges in your lab section. This report should be 1-2 pages in length, 1.5 spaces between lines, 12 point font. Your evaluation will be on the basis of the quality of your construction, as indicated by the ratio of your actual strength compared to your predicted strength and by the quality of your report.Due Date: end of lab period the week of October 17th: 20% of DP grade5. Step five will be the redesign and rebuilding of your bridge based on what you learned in the prototype testing. Due Date: before you leave for Thanksgiving6. Step six will be the final testing of your bridge. The testing will be done during your laboratory time. Due Date: During your laboratory time the week of November 28th: 50% of DP


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