Fundamental Laws of Engineering

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Messages 61 - 80 of total 87 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
zBrown

Ice climber
chingadero de chula vista
Aug 15, 2012 - 11:39pm PT
What's the name of the behavior of repeatedly pressing the button at:

a street crossing
a lobby waiting for the elevator
an argument with your (wife, husband, girlfriend, boyfriend)
...

there's gotta be a law governing this.

oh yeah,

and

if one's good two's better

[call me in the morning]

DanaB

climber
CT
Aug 15, 2012 - 11:43pm PT
"If there are no problems handily available, they will create their own problems.”

I think this describes the personal issues of many people.
MikeL

climber
SANTA CLARA, CA
Aug 16, 2012 - 12:56am PT
Oh, yeah . . . I forgot this: from Jim March at Stanford.

"Solutions are looking for problems, not the other way around."
hillrat

Trad climber
reno, nv
Aug 16, 2012 - 01:15am PT
Show me an engineer who works on his designs...

(ever pull a compressor off a Cummins n14? etc etc)
Lennox

climber
just southwest of the center of the universe
Aug 16, 2012 - 01:59am PT
You open a can, sometimes you get worms.

SL
Mike Bolte

Trad climber
Planet Earth
Aug 16, 2012 - 02:19am PT
if brute force doesn't work, you probably aren't using enough
Jay Wood

Trad climber
Land of God-less fools
Aug 16, 2012 - 02:50am PT
You get what you inspect, not what you expect.




All tools are hammers, except chisels, & they're screwdrivers.





Too much theory & not enough practice can lead to academentia.





If it was easy, someone else would have done it.
Chief

climber
The NW edge of The Hudson Bay
Aug 16, 2012 - 03:33am PT
Not sure if this is relevant but working backwards from the disaster.

Who designed this?
What was it's intended application?
Who built it?
To what standard?
How was it tested?
What are the operating procedures and required training?
Where's the manual and training records?
Was the operator trained accordingly and did they follow agreed procedures?
When was it inspected, by whom and where are the records?

Going the other way.

Known application and anticipated load allowing for dynamics.
Design factor.
Simplest design and best materials.
Progressive modelling and testing including proof loading.
Procedures and training.
Emergency procedures.
Rehearsals.
Inspections.
Operations.

Sierra Ledge Rat

Mountain climber
Old and Broken Down in Appalachia
Aug 16, 2012 - 05:38am PT
If it doesn't fit, force it
divad

Trad climber
wmass
Aug 16, 2012 - 09:20am PT
if it doesn't fit, you must acquit...
cliffhanger

Trad climber
California
Aug 16, 2012 - 11:01am PT
Don't use the antediluvian English system of measurement for science or engineering. Use the metric system.

In the 1960's congress mandated that NASA do all of it's work in the English system. This led to several Mars mission failures and probably much more grief.
Curt

Boulder climber
Gilbert, AZ
Aug 16, 2012 - 11:28am PT
If it doesn't fit, force it

and if it breaks, it needed to be replaced anyway.

Curt
Auto-X Fil

Mountain climber
Aug 16, 2012 - 09:49pm PT
Donini's Law -

One blue Camalot is as good or better than any other anchor, or any combination of other anchors.

It's the only piece of gear you need on your harness.

Don Paul

Big Wall climber
Colombia, South America
Aug 17, 2012 - 12:03pm PT
The more time you spend thinking about something, the less time you have to spend actually working on it. ie there is always a better, faster easier etc way to do something, if you are patient enough to think before diving in.
AE

climber
Boulder, CO
Aug 31, 2012 - 04:03pm PT
If you think you have a truly unbreakable product, you really only have a poor product tester.

ref to Grampa, Aug 15
The more components in a system, the higher the probability of system failure
Really, should say "The more components in a series system, the higher the probability of system failure." Parallel systems incorporate redundant built-in backups, so as to cover failure of any one component.
Parallel systems are routine in many climbing systems, i.e. 2 or more independent anchors, doubled carabiners w/ gates reversed, even just multiple pieces of protection, but then flagrantly ignored in others - one rappel device w/ no backup, one rope, one tie-in loop, one harness!
The latter cases demonstrate where real-world issues of overdesigning enter the picture. Ropes and harnesses and carabiners test far above likely maximum expected loads for different reasons, but ropes especially must be overbuilt to withstand weakening by abrasion, UV damage, repeated falls, sharp edges, etc.

Referencing the cam versus hex scene, A0 / "bomber" hex or stopper placements may be so inherently obvious that it may be safe, whereas cams by nature can never look as certainly bomber, unless perhaps the placement would also be equally bomber for a hex, in which case you're only going to feel stupid for having to leave an expensive gizmo instead of a cheap chunk'o aluminum.

finally,
Donini's Law is valid only for Donini.
meatball

Trad climber
Chico CA
Aug 31, 2012 - 04:40pm PT
We use these from time to time in manufacturing:

"It's not just good......it's good enough."
"Beat to fit, paint to match"

Unrelated to the above statements, but one I have uttered climbing:

"Give me lever long enough and I will move the world"

I'll credit Archimedes for the last one, but couldn't tell you who originally coined the first two.
TwistedCrank

climber
Dingleberry Gulch, Ideeho
Aug 31, 2012 - 05:12pm PT
Diuretics: The science of matter over mind.
Chaz

Trad climber
greater Boss Angeles area
Aug 31, 2012 - 05:18pm PT
"If it don't stink, don't stir it"

More of a plumber's law than an engineer's, but it's a mistake you won't make more than once.
climbski2

Mountain climber
Anchorage AK, Reno NV
Aug 31, 2012 - 05:25pm PT
If at first you don't succeed

Get a bigger hammer
nutjob

Gym climber
Berkeley, CA
Aug 31, 2012 - 05:35pm PT
That is, given the same materials and same level of thinking, to make something stronger you will always add weight.

I added the bold...

Consider how the flying buttress solved the problems of church walls collapsing, making the walls stronger, without adding more weight.

Sometimes we's got to think outside the box.
Messages 61 - 80 of total 87 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
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