One thing I did (don't know if it is correct), but if you have 2 40lb packages going to the same place (mark 1 over 70).
Or if I had large packages to deliver, and it took several dolly trips into the BLDG... per trip, I would mark down 1 over 70.
(I had a computer store, getting large boxes all the time, 10 -30 per trip)... in and out thru the front door....with dolly.... was a pain....and time consuming.
So, eventually, per trip inside, I would mark 1 over 70.
We call that lying, cheating or be untruthful . Just beacuse it takes a couple of trips to complete a stop doesn't mean mean you can say you have package over 70 lbs.
If you truly have a single package that is over 70 lbs that another thing.