Above-Ground

Australian Standard AS 2419 - Fire Hydrant Systems uses the terms above-ground and below-ground, however they are not defined for the purposes of the Standard.  As such we have defined the term above-ground to mean the following;

Above-ground fire hydrant system refers to any portion of the fire hydrant system installed within a building or structure, mounted on the exterior of a structure, or otherwise exposed to the atmosphere. These components are directly subject to ambient temperatures and fire conditions.

For above-ground pipework the Standard mandates the use of pipework, fittings and fixings using materials such as steel, ductile iron, or copper while prohibiting plastic components.