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.