LUBA RET. EX 076/077 RE-E - Laserfiche WebLink

iJ • 0 FIRE HYDRANTS Optimal positioning, spacing, location, and mark- ing of fire hydrants can aid the fire service during emergency operations. Public fire hydrants are often under the purview of a local water authori- ty, many of whom use American Water Works Association (AWWA) standards for fire flow and other criteria. The building design team is often responsible for hydrants and water supply systems on privately owned property sites. Both the IFC and NFPA 1 include appendices that give criteria for fire flow, and fire hydrant location and distribution. Other criteria can be found in NFPA 24, Standard for the Installation of Private Fire Service Mains and their Appurtenances. s i ~i . `4~ 1 (Fig. 2.14) This hydrant should not have been located where it is likely to be blocked. Loading docks, by nature, will likely have vehicles parked. This is an example of building a potential deficiency into a facility. The truck could prevent use of the large pumper connection or cause the base to be kinked when used. Note the yellow bollards which protect the hydrant from vehicle collision. Ia Features Typically, hydrants have a large suction hose con- nection (4'/2 inches is a common size) called a "pumper outlet" or a "steamer" connection. Plus, they normally have two, Th inch hose connections. Both wet-barrel type hydrants and the dry-barrel types used in areas subject to freezing have these features. Dry hydrants (those connected to a static source such as a tank, well, or pond) often have only a large connection or pumper outlet. Criteria for dry hydrants can be found in NFPA 1142, Standard for Water Supplies for Suburban and Rural Firefighting. Hose can be connected directly to a fire hydrant only if the connections match those needed by the area fire service. This includes type (threaded or quick-connect), thread style and size of connection. If the connections do not match, adapters (if avail- able) will slow response. Position Optimal location and positioning of hydrants facili- tates rapid connection of hose lines and devices. Considerations for designers include height, orien- tation, distance from the curb, and distance from surrounding obstructions (Figure 2.14). A clear distance is essential around the hydrant to enable a hydrant wrench to be swung 360 degrees (see Figure 2.16b) on any operating nut or cap nut. If the nearby obstruction is a plant or bush, consider its potential growth when planning for hydrant placement. OSHA Occupational Safety and Health Administration 134 (Fig. 2.15) Here is a pumper connected to a hydrant by its front-mounted suc- tion hose. The pumper end of the hose has a swivel to facilitate reaching hydrants on either side.