2000 APRIL - Laserfiche WebLink

20.08.049 tion colors as referenced in 3-16.6 of NFPA 13-1996. Standard for the Instal- lation of Sprinkler Systems. A9.307 Alarms should be of sufficient intensity to be clearly audible in all bedroom(s) over background noise levels with all intervening doors closed. The tests of audibility level should be conducted with all household equip- ment which may be in operation at night in full operation. Examples of such equipment are window air condi- tioners. APPENDIX B -CALCULATIONS (FOR WATER SUPPLIED BY PUBLIC WATER SYSTEM OR WATER SER- VICE COMPANY) Individual Net Loss Total A. Water Pressure in Street (Static Gauge Pressure) B. Arbitrarily Select Pipe Size (min. pipe size 3/4") A9.404.3 Fire testing has indicated the need to wet walls in the area protected by residential sprinklers at a level clos- er to the ceiling than that accomplished by standard sprinkler distribution. Where beams, light fixtures, sloped ceilings and other obstructions occur, additional residential sprinklers may be necessary to achieve proper response and distribution. Guidance may be ob- tained from the manufacturer. A9.406.3 Determination of public water supply pressure should take into ac- count probable minimum pressure con- dition prevailing during such periods as at night, or during summer months when heavy usage may occur; also, possibility of interruption by floods, earthquakes, etc. C. Deduct Meter Loss (size) D. Deduct loss for Elevation (ft. x .434) E. Deduct Loss from Street to Sprinkler System Control Valve* Pipe - ft. Valves - ft. Elbows - ft. Tee - ft. TOTAL = ft. x F. Deduct Loss for Piping - Control Valve to Farthest Sprinkler " size, ft. x.= " size, ft. x.= 700-13 (Pleasanton April 2000)