What is the definition of a wharf hydrant. In what code, standard or reference can the definition be found?
A wharf hydrant, by definition, is a hydrant that is found on a wharf or pier. Due to the design of the structure, conventional hydrants with conventional buries are not feasible to install. Pipeage of sufficient diameter to meet the fire flow requirements of the facility is run underneath or alongside the wharf or pier structure and the hydrants are threaded onto risers. Typically the risers are 4″ diameter. Wharf heads can have single or multiple outlets of various diameters. During the late 1950s and early 1960s it was common for wharf heads to be installed in residential areas that had small water mains and that were situated in mild climates. Many can still be seen today even though they are nowhere near wharves or piers. In glancing at the NFPA specifications, there are numerous details on calculating flows and spacing of wharf hydrants but the standards assume the reader’s general knowledge as to what a wharf head actually is. As I recall, IFSTA training manuals describe wharf h
