Below-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 below-ground to mean the following;

Below-ground fire hydrant system refers to any portion of the fire hydrant system that is buried or encased within the soil. In this environment, the primary concerns shift from fire integrity to issues such as soil corrosion, ground movement, and external loading (like traffic). Consequently, this area typically utilizes different materials and installation practices compared to the exposed, above-ground sections.