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why is the US not Metric

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Cubdriver:
Tooki, give it up - you're trying to reason with someone who's as receptive to logic and explanations as a brick wall!   :horse: :horse: :horse:

I think we should all stop feeding the troll.

-Pat

CatalinaWOW:
While there is a bunch of arguing without listening going on on this thread I continue to learn things and develop questions/observations.

Question 1:  In metrified countries, how is printer and photographic resolution specified.  In the US it is DPI or dots per inch.  Do metric guys do dots per centimeter or do you do do dot spacing (pitch as defined in the metric world)?  For some reason the metric world seems to gravitate towards the reciprocal of US standard units (liters/km, pitch in mm and so on).  I see no particular advantage to one or the other.  It is kind of like the side of the road you drive on.  Tradition, not advantage.

Question 2/Observation:  Had a boo-boo on the home front and had to do some foundation repairs.  Picked up 800 lbs of ready mix concrete to add to the ready stock I keep around.  It comes in 80 lb bags here, which are marked in the same size font as 36.4 kg.  They also sell 60 lb  (27.3 kg) bags because 80 lbs is above some folks handling threshold.   Is this product available in metric countries and what is the standard size?  It seems that 40 kg would be pushing handling limits pretty hard, while rounding the US standard down to 35 kg would lead to accusations of implementing a hidden cost increase.  Same comment to a 30 kg standard, though that actually seems a fairly reasonable size.  Actually this industry probably wouldn't bother to hide a cost increase.  Those 80 lb bags used to cost about a dollar, they are over $4 USD now at my location.

(Just to forstall any comments:  I have priced buying cement and aggregate.  At my location it doesn't save much and I like having the ready stock bagged.  A pile of aggregate ends up everywhere after a while).

Tepe:

--- Quote from: CatalinaWOW on February 25, 2020, 05:44:43 am ---For some reason the metric world seems to gravitate towards the reciprocal of US standard units (liters/km, pitch in mm and so on).  I see no particular advantage to one or the other.  It is kind of like the side of the road you drive on.  Tradition, not advantage.

--- End quote ---
In my neck of the woods we use km/l


--- Quote from: CatalinaWOW on February 25, 2020, 05:44:43 am ---Question 2/Observation:  Had a boo-boo on the home front and had to do some foundation repairs.  Picked up 800 lbs of ready mix concrete to add to the ready stock I keep around.  It comes in 80 lb bags here, which are marked in the same size font as 36.4 kg.

--- End quote ---

25 kg bags here.

ebastler:

--- Quote from: CatalinaWOW on February 25, 2020, 05:44:43 am ---Question 1:  In metrified countries, how is printer and photographic resolution specified.  In the US it is DPI or dots per inch.  Do metric guys do dots per centimeter or do you do do dot spacing (pitch as defined in the metric world)?  For some reason the metric world seems to gravitate towards the reciprocal of US standard units (liters/km, pitch in mm and so on).

--- End quote ---

I don't think there is any systematic tendency to use the inverse dimension. For resolution, lines/mm is used in photography, printing etc., so the same dimension as the DPI common in the US (and "imported" into metric countries since the 1980s). As Tepe has pointed out, km/l is used in some countries/regions too.


--- Quote ---Question 2/Observation:  Had a boo-boo on the home front and had to do some foundation repairs.  Picked up 800 lbs of ready mix concrete to add to the ready stock I keep around.  It comes in 80 lb bags here, which are marked in the same size font as 36.4 kg.  They also sell 60 lb  (27.3 kg) bags because 80 lbs is above some folks handling threshold.   Is this product available in metric countries and what is the standard size?  .

--- End quote ---

Workplace health & safety recommendations here say that frequent/regular lifting should be limited to 30kg for men, and to 25kg for those aged over 45. The 25kg standard size for bags of cement, sand, potatoes etc. is consistent with that recommendation.

Tepe:

--- Quote from: ebastler on February 25, 2020, 07:30:02 am ---Workplace health & safety recommendations here say that frequent/regular lifting should be limited to 30kg for men, and to 25kg for those aged over 45. The 25kg standard size for bags of cement, sand, potatoes etc. is consistent with that recommendation.

--- End quote ---
Sensible stuff.
Here the bags went from 50 kg to 40 kg and then 25 kg.

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