Those #+%^ engineers!

[dstig1]

SO… Architects use a computer program known as BIM (Building Information Modeling) that incorporates all the different trades into a 3D program that reviews conflicts and allows correction prior to start of construction.

I have no idea of the cost, but I believe a similar program could be used to design vehicles and other complex equipment.

Oh they absolutely do the same thing in large assemblies like vehicles. There is a systems integration function for this. But not all problems are solvable or worth solving. If you are reusing an existing engine but the structure requires bracing in a certain spot that makes it hard to get to the oil filter, you are certainly not going to change the engine, and you may look at changing the structure but determine it is not worth the time and cost. A made-up example, but the gist of how the design process goes.

As a former engineer, I can say that this is much closer to reality. ....Design for service and repair is not the only consideration or priority. That said, bad decisions still get made all the time - because it's complicated.

In my experience, the best engineers are those who also have practical, hands on experience using and fixing the stuff they are designing. And the best technicians are those who have some understanding of physics and/or engineering.

We are saying the same thing in your first point, and I couldn't agree more on your second point. When hiring new engineers I always look for some sort of clue that they are hands-on. Do they work on cars? Off roading? Home automation? Arduino or electronics stuff? Wood/metal working? Any sort of hobby or interest that shows they know the use and repair side of life. That kind of practical experience is invaluable.

 

[paulsharvey]

Blend door actuators is one of my favorites. I’ve replaced three in my lifetime. There are difficult to get at. On a car that used to be my daughters, a Chevy Impala, roughly a 2010, I spent about 15 minutes taking one bolt out and about the same amount of time putting it back in. The other two bolts were easy. The problem is the gears in these things are so cheap.

Wife had an 08 Impala; and i did the blend door actuator... Its not necessarily "Hard" but its upside down, backwards, tiny, and you can't hardly fit a hand in, all while laying half on the seat/half hanging out of the passenger side door.

 

[Jstpssng]

An engineer's purgatory; in the afterlife, he will have to work on what he designed.

 

[paulsharvey]

So, not vehicles, but I deal with civil engineers daily. Yes, we find mistakes, but sometimes there are good reasons for the mistakes, and some are comprises, and others, for different reasons.

One thing ive seen, each layer is its own layer on Autocad, and generally they are good, but often they either don't stack them, or they dont stack after a change; leading to conflicts

Another thing, cheap clients... So, lets say im an engineer, and you want a civil set for your liquor store. I say, the base cost is $20k, but do you want SUE (subsurface utility engineering/soft digs to verify water main/sewer location) for $5000, or you want what the utility department hands me; you want survey of only your property or a out into the road, for another $2500? You want me to include 2 hours of "post design services' or do you want 8 hours at $300/hr?(Thats basically trouble shooting, dealing with things that come up). Most clients want the $20k and dont consider what a water main being 5 ft under the road vs under the sidewalk costs.... and they squeal when they see the change orders.

Also, not every "mistake" is actually a mistake. Someone mentioned spark plugs; thats a 150k+ miles item, and not something thats a PM service these days, so ease of access really is a non factor.

Other times, very good designs are value engineered away