0 <br />• <br />• <br />4 8 <br />In some circumstances, an FDC will feed a sys- <br />tem covering only a portion of the building. <br />Signage at the FDC indicating such partial protec- <br />tion alerts responding firefighters to this, so they <br />may factor it into their risk analysis. Signage <br />should provide enough detail so that firefighters <br />connecting the hose lines can identify the proper <br />connection. <br />There are also situations (discussed in the sec- <br />tions, Other Design Issues, page 40 and, Quantity, <br />page 42) where multiple FDCs on a building are not <br />interconnected. In these cases, designers should <br />consider the signage to assist the fire department <br />in supplying the correct FDC. Diagrammatic signs <br />are visually the most helpful. <br />FDCs that are far from the buildings they feed <br />also need special signs. If multiple buildings and <br />the FDC locations make it unclear which FDC goes <br />to which building, designers should provide appro- <br />priate identification (Figure 5.13). <br />Considerations - FDC Marking <br />■ Mark FDCs prominently when remote from <br />fire apparatus access. <br />■ Add signage for systems with a demand <br />pressure over 150 psi. <br />■ Add signage for underground buildings and <br />facilities. <br />■ Mark partial systems (preferably with a dia- <br />grammatic sign). <br />■ Mark sections of non-interconnected sys- <br />tems (preferably with a diagrammatic sign). <br />■ Add signage if the corresponding building is <br />not clearly obvious. <br />O %U <br />Occupational Safety and <br />Health Administration <br />164 <br />(Fig. 5.13) Address indicator sign to show which <br />building this FDC feeds. <br />