Eric Cutright, SM Troop 1028/9, June 2020

SCOUTS BSA: TROOP 1028/1029

Engineering Merit BadgePART THREEEric Cutright, SM Troop 1028/9, June 2020

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Engineering Merit Badge VAHC Online Class June 2020

Day 1 – Overview of Requirements, Introduction to Engineering, Systems Engineering Approach to Problem Solving (5)

– Homework 1: Just Roll With It - Engineer a BB-8 Droid !! (1)

Day 2 – Types of Engineers (3), Engineering Design– Showcase: Scout homework pictures– Homework 2: Best Patrol Gear Ever – Engineer a Portable “Bridge” !! (5b)

Day 3 – Triumphs/Disasters in Engineering (2), Professional Engineers (7), Code of Ethics (8), Computer Design (2 - if time)

– Showcase: Scout homework pictures– Homework 3: Yo! Don’t be an Energy Hog !! (6b, plus your choice of another #6)

Day 4 – Careers in Engineering (9), Engineer Interview (4) (yikes, it’s me!)– Showcase: Scout homework pictures– Homework 4: Whoa, What a Cool / Fun Career !! (9)

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The Plan for TodayPart Three – Engineers Rule !

• Great Accomplishments and Terrible Disasters in Engineering (Requirement 2)

• Evolution of Computer Design (Requirement 2) – If time permits, otherwise you can see it on our website

• Review of Day 2 HomeworkBest Patrol Gear Ever – Engineer a Portable “Bridge” !! (5b)

• Day 3 Homework: Yo! Don’t be an Energy Hog !! (Requirement 6b)Plus something else from Requirement 6 – Your choice !!

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Great Accomplishments in

Engineering (Requirement 2)

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Greatness. For Life.TM


Ancient Egypt – Pyramids of Giza (2500 BC)

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Engineering Facts:500 feet high, each base side 756 feet long2.3 million blocks, total weight of 6 million tonsTallest man-made structure in world until 1300ADBase is perfectly flat and level to ½ inchFour sides average error of 2 inchesRatio of perimeter to height = 2 to 0.05% accuracy


Great Wall of China (300 BC)

• Stretches 4,000 miles across northern China averaging 25 feet high and 15-30 feet wide

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Panama Canal (opened 1914) –48 miles long, 85 feet above SL

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Channel Tunnel (1994)

• 31 mile tunnel runs under English Channel to connect England and France

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Tunnel BoringMachine


Integrated Circuit (1958)

• Invented by Jack Kilby to manufacture multiple electronic components together on the same piece of semiconductor material

• Paved the way for modern computers and electronics

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Modern Computers

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Modern Vehicles

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Terrible Disasters in Engineering

(Requirement 2)

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Learn From Mistakes. For Life.TM


Wreck of the RMS Titanic (April 15, AD 1912)

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Tacoma Narrow Bridge Collapse (1940)

• Bridge destroyed by harmonic action from wind –design was too flexible and used shorter girders to cut costs – luckily no loss of life

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Therac-25 (1976)

• Radiation therapy machine gave patients massive overdoses of radiation due to concurrent programming errors

• Led to advances in software control of safety-critical systems like medical devices and transportation

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Space Shuttle Challenger (1986), Columbia (2003)

• Challenger disaster caused by failed O-ring in booster rocket• Columbia disaster caused by wing tile damage from foam

insulation breaking off external tank

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Hubble Space Telescope (1990)

• Main mirror was ground to wrong specifications and had to be replaced (but has since been amazing)

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Professional Engineer (P.E.) Certification (Requirement 7)

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Professional Engineer (P.E.) Certification

• For some careers or particular projects, it may be necessary to get a Professional Engineering (PE) license in your state or the project’s state

• Obtaining a license is typically a four-step process1. Earn an approved 4 year engineering degree2. Complete 4 years of qualifying work experience3. Pass the Fundamental of Engineers (a.k.a. Engineer-in-

Training) exam4. Pass the Principles and Practice of Engineering (PE) exam

(which is quite difficult)

• Typically must periodically renew the PE license

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Engineer’s Code of Ethics

(Requirement 8)

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Engineering Ethics. For Life.TM


Engineer’s Code of Ethics

• The Engineer’s Code of Ethics has three fundamental principles that guide the work of the engineering profession

• Engineers uphold and advance the integrity, honor, and dignity of their profession by– Using their knowledge and skill for the enhancement of human

welfare– Being honest and impartial, and faithfully serving the public, their

employers, and their clients– Striving to increase the competence and prestige of the

engineering profession

• How is this similar to the Scout Oath & Scout Law?

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Day 2 Homework Highlights: Best Patrol Gear Ever –

Engineer a Portable “Bridge” !!

(insert pictures received)

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Princess Ponies. For Life.TM


Princess Pony Diving Board: Building Overview and Parts

• “Required” parts (think why I would suggest these)– Three 8 foot bridge sections plus 2 yardsticks– 2 small clamps, 2 large clamps, 20 feet painter’s masking tape– 200 feet of string, scissors, 1 Princess Pony, optional: up to 50 LEGO pieces of your choice

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Princess Pony Diving Board: The Rules

• If you don’t have the exact part, be creative and use what you have at home – don’t buy anything, and don’t exceed my list !

– If you have nothing, email me for help (CC your parents)• You are making a single-anchor point suspension bridge

(a.k.a. diving board) that must be attached to the table (without damaging or modifying the table)

• Nothing can touch the floor or be tied to the ceiling/walls or anything in the room

– Exception: can tie to anything on the materials list or any part of the table• No modification of parts (can’t drill holes, break, etc.)

– Exception: can cut string and tape as desired• Load must be placed on the very furthest “floating” end of your bridge

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Princess Pony Diving Board: Competition Judging

• Diving Boards judged on two/three measurable criteria– Length – measure in inches from nearest edge of table– Load Bearing – two ways to measure how much your diving

board can support without breaking or touching the floor:• Record the load weight - measure in ounces, pounds, # ponies, #

elephants, or tons depending on how strong your final bridge is made !

• Record the downward deflection in inches from starting point

• Since everyone will likely have variations in materials, this is just for FUN and you are NOT competing against each other

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Day 3 Homework: Yo! Don’t be an Energy Hog !!

(Requirement 6b)

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Energy Hog. For Life.TM



• Part 1: Using the provided list of home appliances, pick the 10 that you think use the most electricity per year. The biggest energy hog list wins !– Pick your top ten, show to Eric– Eric will provide an answer key tomorrow– Add up your annual energy cost to get a grand total

• Part 2: List five ways you can conserve electricity to become less of an energy hog

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SCOUTS BSA: TROOP 1028/1029 29




• The instructions and sheet to record your homework can be found in two ways:– Navigate from our home page, via “Earning Merit Badges”

drop down: www.troop1028.org

– or go directly there: www.troop1028.org/engineering-merit-badge.html

• File: – Energy Hogs Requirement 6b Homework Day 3.pdf – The answer key file for tomorrow is also there – no peeking !

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Other Homework: Something Else from

Requirement 6

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Engineering MB Reqt 6

6. Do TWO of the following:a. Transforming motion. Using common materials or a construction set, make a simple model

that will demonstrate motion. Explain how the model uses basic mechanical elements like levers and inclined planes to demonstrate motion. Describe an example where this mechanism is used in a real product.

b. (Mr. Eric’s homework) Using electricity. Make a list of 10 electrical appliances in your home. Find out approximately how much electricity each uses in one month. Learn how to find out the amount and cost of electricity used in your home during periods of light and heavy use. List five ways to conserve electricity.

c. Understanding electronics. Using an electronic device such as a mobile telephone or portable digital media player, find out how sound travels from one location to another. Explain how the device was designed for ease of use, function, and durability.

d. Using materials. Do experiments to show the differences in strength and heat conductivity in wood, metal, and plastic. Discuss with your counselor what you have learned.

e. Converting energy. Do an experiment to show how mechanical, heat, chemical, solar, and/or electrical energy may be converted from one or more types of energy to another. Explain your results. Describe to your counselor what energy is and how energy is converted and used in your surroundings.

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Engineering MB Reqt 6

6. Do TWO of the following (continued):f. Moving people. Find out the different ways people in your community get to work. Make a

study of traffic flow (number of vehicles and relative speed) in both heavy and light traffic periods. Discuss with your counselor what might be improved to make it easier for people in your community to get where they need to go.

g. Building an engineering project. Enter a project in a science or engineering fair or similar competition. (This requirement may be met by participation on an engineering competition project team.) Discuss with your counselor what your project demonstrates, the kinds of questions visitors to the fair asked, and how well you were able to answer their questions.

We will do 6b as homework, but you will need to pick one more from 6a, or 6c – 6g on your own!

Note that 6g is not recommended under current COVID-19 conditions.

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End of Day 3 !!

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Yoda. For Life.TM

Eric Cutright, SM Troop 1028/9, June 2020

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