According to the City of Denton water utility criteria, commercial developments must install approved backflow prevention assemblies to protect the public water supply.
Backflow Prevention Assembly Requirements for Commercial Buildings
Hydrant Spacing Based on Fire Code Access Distance
According to the City of Denton fire code criteria, hydrant spacing is determined by maximum hose lay distances to ensure adequate emergency coverage throughout a site.
Flood Risk Assessment
According to Wikipedia, a flood risk assessment (FRA) is an evaluation of the risk of flooding from all possible flooding mechanisms, including the identification of appropriate flood mitigation measures and the provision of guidance on actions to be taken before and during a flood event. The sources of flooding include groundwater, surface water such as rivers and streams, artificial water sources such as burst water mains, canals, and reservoirs, as well as sewers, drains, and seawater.
For each source of water, different hydraulic intensities may occur. Flooding can result from a combination of sources, for example high groundwater levels combined with an inadequate surface water drainage system. The assessment must consider the topography, hydrogeology, and physical characteristics of the existing or proposed development. A flood risk assessment therefore involves evaluating flood risk together with the associated consequences, impacts, and vulnerability.