Coarse screening systems need to be able to handle anything, in a wide variety of water and wastewater applications. From drainage canal trash to storm sewer debris, coarse screens need to be designed and manufactured with a high degree of durability to avoid costly repair of grid, track and drive systems.
The Chicago L (short for elevated) is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. It is operated by the Chicago Transit Authority (CTA). It is the fourth largest rapid transit system in the United States in terms of total route length, at 102.8 miles (165.4 km) long, and the third busiest rail mass transit system in the United States after the New York City Subway and Washington Metro.
The Chicago rapid-transit system is officially nicknamed the L. This name for the CTA rail system applies to the whole system: its elevated, subway, at-grade, and open-cut segments. The use of the nickname dates from the earliest days of the elevated railroads.