Engineering Jokes

A compilation of great engineering jokes. Enjoy!

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Why Engineers Don’t Write Recipe Books

Chocolate Chip Cookies:
Ingredients:
1.) 532.35 cm3 gluten
2.) 4.9 cm3 NaHCO3
3.) 4.9 cm3 refined halite
4.) 236.6 cm3 partially hydrogenated tallow triglyceride
5.) 177.45 cm3 crystalline C12H22O11
6.) 177.45 cm3 unrefined C12H22O11
7.) 4.9 cm3 methyl ether of protocatechuic aldehyde
8.) Two calcium carbonate-encapsulated avian albumen-coated protein
9.) 473.2 cm3 theobroma cacao
10.) 236.6 cm3 de-encapsulated legume meats (sieve size #10)

To a 2-L jacketed round reactor vessel (reactor #1) with an overall heat transfer coefficient of about 100 Btu/F-ft2-hr, add ingredients one, two and three with constant agitation. In a second 2-L reactor vessel with a radial flow impeller operating at 100 rpm, add ingredients four, five, six, and seven until the mixture is homogenous. To reactor #2, add ingredient eight, followed by three equal volumes of the homogenous mixture in reactor #1. Additionally, add ingredient nine and ten slowly, with constant agitation. Care must be taken at this point in the reaction to control any temperature rise that may be the result of an exothermic reaction. Using a screw extrude attached to a #4 nodulizer, place the mixture piece-meal on a 316SS sheet (300 x 600 mm). Heat in a 460K oven for a period of time that is in agreement with Frank & Johnston’s first order rate expression (see JACOS, 21, 55), or until golden brown. Once the reaction is complete, place the sheet on a 25C heat-transfer table, allowing the product to come to equilibrium.

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Half Full or Half Empty?

To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is twice as big as it needs to be.

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The Balloonist

A man in a hot air balloon realized he was lost. He reduced altitude and spotted a man below. He descended a bit more and shouted, “Excuse me, can you help me? I promised a friend I would meet him half an hour ago, but I don’t know where I am.”

The man below replied, “You are in a hot air balloon hovering approximately 30 feet about the ground. You are between 42 and 44 degrees north latitude and between 83 and 85 degrees west longitude.”

“You must be an engineer,” said the balloonist.
“I am,” replied the man, “but how did you know?”

“Well,” answered the balloonist, “everything you told me is technically correct, but I have no idea what to make of your information, and the fact is I am still lost.”

The man below responded, “You must be a manager.”
“I am,” replied the balloonist, “how did you know?”

“Well,” said the man, “you don’t know where you are or where you are going. You made a promise which you have no idea how to keep, and you expect me to solve your problem. The fact is you are exactly in the same position you were in before we met, but now, somehow, it’s my fault.”

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The Airplane

A programmer and an engineer were sitting next to each other on an airplane. The programmer leans over to the engineer and asks if he wants to play a fun game. The engineer just wants to sleep so he politely declines, turns away, and tries to sleep. The programmer persists and explains that it’s a real easy game. He explains, “I’ll ask a question and if you don’t know the answer you pay me $5. Then you ask me a question and if I don’t know the answer I’ll pay you $5.” Again, the engineer politely declines and tries to sleep.

The programmer, now somewhat agitated, says, “OK, if you don’t know the answer, you pay me $5, and if I don’t know the answer, I’ll pay you $50!” Now, that got the engineer’s attention, so he agrees to the game. The programmer asks the first question, “what is the distance from the earth to the moon?” The engineer doesn’t say a word and just hands the programmer $5.

Now, it’s the engineer’s turn. He asks the programmer, “what goes up a hill with three legs and comes down on four?” The programmer looks at him with a puzzled look, takes out his laptop computer, looks through all his references and after about an hour wakes the engineer and hands him $50. The engineer politely takes the $50, turns away, and tries to return to sleep.

The programmer, a little miffed, asks, “Well? What’s the answer to the question?” Without a word, the engineer reaches into his wallet, hands $5 to the programmer and returns to sleep.