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(5ource: Metropolitan Toronto Waste Composition Study, 1991, <br />cited in construction Waste & Demolition Debris Recycling ... A Primer <br />(1993) solid Waste Association of North America (silver spring MD.) <br />II. Estimating the amount of recyclable waste : conversion figures <br />Mixed Waste 350 lbs/cu yd 0.175 tons/cu yd 5.7 cu <br />yds/ton <br />wood 300 lbs/cu yd 0.15 tons/cu yd 6.7 cu <br />yds/ton <br />cardboard 100 lbs/cu yd 0.05 tons/cu yd 20 cu yda/ton <br />Gypsum wallbd. 500 lba/cu yd 0.25 tons/cu yd 4 cu yds/ton <br />Rubble 1400 lbe/cu yd 0.7 tons/cu yd 1.4 cu <br />yds/ton <br />(source: Resource Efficient Building (1994), Metro Solid <br />Waste Department (Po rtland OR).) <br />III. Tips on reducing the cost of recycling <br />--Schedule containers for collecting recyclables only when needed. <br />For example, rent a collection container for cardboard only during the <br />latter part of construction, when the majority of cardboard waste is <br />generated.-- <br />--Be sure to understand the market specifications so that <br />recyclable materials are not rejected. For example, some markets for <br />clean wood waste accept only dimensional lumber; others also accept <br />plywood, particle board, and oriented atrand board. <br />--Encourage scrap dealers to be flexible when possible. For <br />example, a scrap metal dealer who initially refused to accept metal <br />bands from around lumber was convinced to accept them when they were <br />repeatedly folded and hit with a hammer, then put into an empty 5-gallon <br />plastic bucket, so as to create a more denae item for transportation. <br />(Creating these more dense bundles of inetal bands also had the advantage <br />of cutting down on injuries at the conatruction site.) <br />Iv. Estimating the cost of waste management encompassing <br />recycling <br />The following steps will help arrive at an estimate of the cost of <br />