DENSITY--METHOD OF DETERMINING – ITEM 490

 

1. “DENSITY” means “Pounds Per Cubic Foot”.

2. Where classes are applicable, according to the density of articles as tendered for shipment, the density may be determined as follows:

a. LOOSE ARTICLES OR PIECES--Multiply the greatest straight-line dimensions (not circumferential) of length, width and depth in inches, including all projections; and divide by 1728 cubic inches (one cubic foot). The density shall be the result of the division of the weight per article or piece by the ascertained cubic feet.

b. PACKAGED ARTICLES OF A ELLIPTICAL, RECTANGULAR OR SQUARE SHAPE ON ONE PLANE--Multiply the greatest straight-line dimensions (not circumferential) of length, width and depth in inches, including all projections, and divide by 1728 cubic inches (one cubic foot).  The density shall be the result of the division of the weight per article or piece by the ascertained cubic feet.

c. CYLINDRICAL SHAPED ARTICLES--Square the greatest dimension of the article in inches (multiply the greatest dimension in inches by itself) and multiply that result by the height or length in inches. Divide the result by 1728 cubic inches (one cubic foot). The density shall be the result of the division of the weight per article or piece by the ascertained cubic feet.

d. ARTICLES, OTHER THAN OF A ELLIPTICAL, RECTANGULAR OR SQUARE SHAPE ON ONE PLANE--Square the greatest dimension in inches by itself) and multiply that result by the height or length in inches. Divide the result by 1728 cubic inches (one cubic foot). The density shall be the result of the division of the weight per article or piece by the ascertained cubic feet.

3. The weight per cubic foot relates to the density of each shipping package or piece and not to the shipment as a whole.

4. Any shipping unit that will not allow other freight to be loaded on or around it due to its irregular shape, e.g. "Pyramid Pallets", or height rendering the free air space above unusable, will be considered as being 110 inches in height for the purpose of calculating density per cubic foot. Packaged units, such as pallets, skids, cartons banded or shrink-wrapped into a single unit, units which due to their irregular shape on top (e.g. machines, etc.), or packaged units which are marked with instructions that no other freight is to be loaded on top are subject to the provisions of this item.