How much land area would be required per ton to compost 100 ton/d of processed (sorted and shredded) residential and commercial MSW subject to the following conditions: Windrow composting with mechanical turning to be used. Maximum width = 5.5 m Maximum length of windrows = 150 m Average distance between windrows = 2.5 m Angle of repose of waste in windrows = 1:1 Specific weight of the processed MSW = 325 kg/m Active composting period = 1 month Curing period = 4 month A storage area equal to 15% of the area used for composting will be required.