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The objective was to design a piece of equipment that could quantitatively measure the ability of a firefighter to chop through a roof.
The roof ventilation emulator is being designed for the Minneapolis Fire Department at the request of PDRI which is working with the fire departMent on their hiring and training proceedures.
The roof ventilation emulator is a piece of equipment designed so that firefighters can be trained and tested on chopping a hole in the roof of a burning building. This is an important task in fighting many fires and has the objective of letting the smoke out.
ROOF VENTILATION TEST
DATE TEST #:
NAME:
SEX: AGE: HEIGHT: WEIGHT:
YEARS ON FORCE:
CURRENT COMPANY:
CURRENT RANK
NUMBER OF TIMES VENTILATED ON JOB:
HOW LONG DID IT TAKE YOU?
HOW MANY BLOWS OF THE AX?
ACTUAL TIME:
ACTUAL # BLOWS:
Subject Sex Age Height Weight TimeXA F 29 72 160 6.8XB M 55 69 170 7XC M 42 76 220 4.1XD F 33 67 210 8.7XE F 31 67 145 9XF M 47 66 190 3.8XG M 25 70 185 3.8XH M 40 73 180 4XI M 28 73 218 2.5XJ F 34 65 135 13.6XK M 47 68 190 4.1XL M 33 73 200 1.9
DESIGN CONSTRAINTS
Cost of design & construction
Ease of operation
Ease of setup, knokdown
Ease of storage (size/weight)
Operating environement (rain, snow, temp)
Estimated costItem Cost
Frame materials and welding 500
Strike target 75
Rebound bumpers 50
Paint 40
Sensor 125
PC board 150
Power supply 75
Connectors 50
Enclosure 75
Clock 25
Stepper motor 25
Tripod 100
Total $1,330
EquipmentDid not deal with technology in advanceDid not test movieRoom lighting too darkLights off during questions
Delivery"Can you hear me"Talking to screenNo eye contactHands in pocketMoving aroundReading slidePointing to screenUsing fingers for pointingSilence fillers ("ahh", "um")
ContentPoor organizationNo agendaNo motivation for audienceNo action requestedDid not show design until endWhat was point of the testing?Apologized for costMade Phoenix emulator sound greatMade my design sound expensive, complexWay over time. Did not cut. Questioner put-down.Made an exciting project really dull
VisualsUseless, content-free titleProse on slidesFont too smallData in tabular formAll data vs summaryNo photo of testingPhoenix pix too smallBad use of colorSloppy perspectiveWeird slide backgroundDumb PowerPoint tricks
Mistakes in Talk
Oral Presentations -- the basics
• Know your audience (who, why)• Incentive (why they should know)• Big picture (where you are going)
• Organize the talk• Create visuals• Rehearse (for timing)• Deliver
The very first considerations...
Creating the presentation...
Presentation organization
• The opening– Why, what, how– Put problem in context
• Body– Context dependent
• Closing– Conclusion– What do you want them to do
• Questions & Discussion– Leave time– Listen before answering
Presentation hints
• Will never have time ==> select important material• Give punchline first • Be credible, cite sources, be honest• Respect audience intelligence• Never apologize• Anticipate questions• Presentation, not a speech• Need not be a star
Visuals
• Simple, to the point• Imitate headline writers• Title that tells the
message, then text, data or images to back up the message
• Keep it simple!
• Careful color• Watch clutter• Fonts large and dark• 2 font families max• Dark text on light back• Watch fancy transitions
• Keep it simple!!
Assertion-Evidence Structure
• Headline states the assertion of the slide• Slide body backs up the assertion with evidence
– Relevant images– Experimental data– Basic equations– Product rendering
UMN Library e-book
Subject Sex Age Height Weight TimeXA F 29 72 160 6.8XB M 55 69 170 7XC M 42 76 220 4.1XD F 33 67 210 8.7XE F 31 67 145 9XF M 47 66 190 3.8XG M 25 70 185 3.8XH M 40 73 180 4XI M 28 73 218 2.5XJ F 34 65 135 13.6XK M 47 68 190 4.1XL M 33 73 200 1.9
Heavier people chop faster
0
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4
6
8
10
12
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16
120 140 160 180 200 220 240
Weight (lbs)
Ch
op
pin
g ti
me
(min
)
Photos from Paraplegia News and Sports ‘n Spokes
People with disabilities are active
• Wheelchair sports• Disability Culture has
driven demand for solutions
• ADA has provided legal clout
• Health care cost-effectiveness drive reins in the pace
Delivery
• Eye contact with all• Speak to audience• Project• Don’t read• Practice
• Posture• Hands• Don’t block projector• Know room and
equipment, assume technology won’t work