5
10.3 Alternative installations ................................................................................................................................ 73
10.4 Pre-action installations .................................................................................................................................. 73
10.5 Subsidiary dry pipe or alternate extension .................................................................................................. 74
10.6 Subsidiary multiple control valve ................................................................................................................. 75
11 Spacing and location of sprinklers............................................................................................................... 75
11.1 General .......................................................................................................................................................... 75
11.2 Maximum area per sprinkler ........................................................................................................................ 75
11.3 Minimum distance between sprinklers ....................................................................................................... 78
11.4 Location of sprinklers in relation to building construction ........................................................................ 78
11.5 Intermediate sprinklers in High Hazard occupancies ................................................................................. 81
12 Sprinkler design characteristics and uses .................................................................................................... 85
12.1 General .......................................................................................................................................................... 85
12.2 Sprinkler types and application .................................................................................................................... 85
12.3 Flow from sprinklers ..................................................................................................................................... 87
12.4 Sprinkler temperature ratings ...................................................................................................................... 87
12.5 Sprinkler Thermal sensitivity ......................................................................................................................... 88
12.6 Sprinkler guards ............................................................................................................................................ 88
12.7 Sprinkler water shields.................................................................................................................................. 89
12.8 Sprinkler escutcheon plates ......................................................................................................................... 89
12.9 Corrosion protection of sprinklers ............................................................................................................... 89
13 Valves ............................................................................................................................................................. 90
13.1 Control Valve Set .......................................................................................................................................... 90
13.2 Stop Valves .................................................................................................................................................... 90
13.3
Ring main valves............................................................................................................................................ 90
13.4 Drain valves.................................................................................................................................................... 90
13.5 Test valves ...................................................................................................................................................... 91
13.6 Flushing connections .................................................................................................................................... 92
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