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PRE-INCIDENT PLANNING <br /> The dimension of these containers are 8' The difference between these two <br /> wide X 40' long X 9' high. A container methods in this particular example is 400 <br /> has 2,880 cubic feet with an average tires. Both methods offer you ball park <br /> capacity of 1,100 tires. figures for the number of tires per pile. <br /> The purist can compute the pile in both <br /> To estimate the number of tires on site, methods and average the difference. <br /> simply measure the tire pile in cubic feet <br /> and divide by the number of cubic feet in Estimating Chip Tire Piles <br /> a container load. <br /> Estimating the number of tires in chip tire <br /> For example, a pile roughly 144 feet long piles is accomplished using "tire <br /> and 24 feet wide with an average height of equivalents". A tire equivalent, according <br /> 10 feet would be equivalent to 34,560 to NFPA 231D Appendix A, is 25 pounds. <br /> cubic feet. Dividing 34,560 cubic feet of This factor is derived from the weight of <br /> the pile by 2,880 cubic feet of the one new H78-14 passenger car tire. The <br /> container would equal 12 container loads. average weight of an average used <br /> Multiply 12 container loads by 1,100 tires passenger car tire (size 16" or smaller) is <br /> per container and your pile would equal 21.6 pounds. <br /> 13,200 tires. <br /> Fire officials could rely on the site <br /> tire pile foot3 X 1,100 = number of tires operator for the weight of a chipped tire <br /> 2,880 pile to determine the number of <br /> equivalent tire units. Or the fire official <br /> Another method involves dividing the could use the industry standard of 33 <br /> cubic feet of a tire pile by 27. You then pounds of tire material per cubic foot. <br /> multiply the answer by 10 if the pile is <br /> randomly stacked. Or multiply the answer For estimation purposes, measure the <br /> by 15 if the pile is laced. chipped tire pile in cubic feet and multiply <br /> by a factor of 33. To estimate the number <br /> Using the same dimensions from the of equivalent tires, divide by 21.6, the <br /> above example, let's say this pile was average weight of a used passenger car <br /> random. We have previously calculated tire. <br /> the scrap tire pile to 33,600 cubic feet; <br /> divide this by the factor of 27. Your chipped pile foot3 X 33 <br /> answer should compute to 1,244.44. 21.6 <br /> Multiplied by a factor of 10, this equals <br /> 12,444 tires. <br /> tire pile foot3 X 10 = number of tires <br /> 27 <br /> 39 <br />