Bus routes operating in DC or Maryland use only a number, or a letter and a number, as noted below.
The two main types of carpet construction are defined by the way the carpet fibers are attached to their backing. Loop pile means the fibers are bent into little loops. Itâs a very durable, stain-resistant carpeting, but has a low profile and limited cushioning. Level loop is also called Berber.
Each of the fiber systems used in the manufacture of carpet can be divided into two classifications: staple and bulked continuous filament (BCF). Nylon is produced in both staple and BCF yarn. Olefin is typically produced in BCF only. Polyester is manufactured in staple only; cotton and wool are inherently staple.