Date: 08/02/99 at 16:27:17 From: Dianna Corcoran Subject: How to calculate dim weight? Is there more than one way to calculate dim weight (dimensional weight)? I have used length x width x height divided by 194. Is this correct? Is there another way to do this? Someone told me that there was an 'air dim weight' and that there was also a 'ground dim weight'. Is this correct? Thanks for your help. Di
Date: 08/02/99 at 18:37:20 From: Doctor Rick Subject: Re: how to calculate dim weight? Hi, Diana. This was new to me, so I looked it up on the Web. Here is a page on the UPS Web site that explains their formulas for calculating shipping charges. http://www.ups.com/using/services/packaging/dimwt-guide.html It says that this is a standard used throughout the air freight industry. It also lists a different factor (166 instead of 194) for international shipments and a metric formula as well. I hope this provides the information you need. Apparently the formula is based on a "standard" density (weight per unit volume) for packages, namely 1/194 pound per cubic inch (for domestic packages). I was curious so I worked out the density of water, and it is just about exactly 7 times this density. So the shipping industry evidently settled on a standard density for packages of 1/7 the density of water. The international factor, 1/166, is about 1/6 the density of water. In the metric system, the density of water is an even 1 gram (1/1000 kg) per cubic centimeter, so the (international) dimensional weight factor is an even 6000. I imagine the metric formula was established first. - Doctor Rick, The Math Forum http://mathforum.org/dr.math/
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