Key takeaways
- Under-specification gets fixed quickly because something fails. Over-specification survives for years because nothing does.
- Specifying new where a good used box would do is the largest and most common form of over-specification.
- Three questions find it: who sees the box, what does it actually weigh, and how many trips do you really get.
- Respect a conservative spec when somebody can articulate the reason. “It has always been that spec” is not one.
Under-specify a box and you find out immediately: something fails, somebody complains, the spec gets changed. Over-specify and nothing happens at all, forever, except that you spend more than necessary every month for years.
This asymmetry is why over-specification is one of the most persistent forms of waste in industrial packaging.
How it takes hold
- A spec is set during commissioning, conservatively and correctly, because nobody has operating history.
- The person who set it moves on. The reasoning does not get written down.
- The spec becomes a part number in a purchasing system, which is where specifications go to become permanent.
- Nobody revisits it, because it is not causing a problem. Causing no problem is precisely its defining characteristic.
Where the extra cost hides
| Often specified | Often sufficient | Where the extra cost comes from |
|---|---|---|
| New five-wall box | A good used five-wall box | Paying for newness the job never uses |
| Top used grade | A mid-grade used box | Paying for appearance nobody sees |
| Five-wall | Four-wall, for a lighter load | A heavier construction than the load needs |
| Taller box | A shallower box, for dense product | Capacity that cannot safely be filled |
None of these are dramatic per unit. All of them add up over a year, and several of them often coexist in the same operation.
The three questions that find it
Who actually sees this box?
If the answer is “only our own staff”, the grade only needs to be as good as the handling demands, and anything above that is decoration. This single question accounts for most of the over-specification that gets found.
What does it actually weigh?
Not the design figure, the weighed figure. Loads are frequently well below the number the spec was built around, which can mean a lighter wall construction would do.
How many trips do we actually get?
If the real answer is one or two, durability is not being used and the premium is wasted. Mark a sample of boxes and count how many are still in service week by week.
The exception worth respecting
Sometimes the conservative spec is load-bearing in an organisational sense: a customer contract, an insurance position, a quality system that would need requalification to change. Those are real constraints and not worth fighting over a small saving per box.
The distinction is whether anybody can articulate the reason. If they can, respect it. If the only answer is that it has always been that spec, you have probably found a saving.
Questions