NFPA 170-2021 Standard for Fire Safety and Emergency Symbols.
Chapter 7 Symbols for Use in Water Supply, Extinguishing, and Sprinkler System Drawings and Insurance Diagrams 7.1* Introduction. 7.1.1 This chapter presents symbols that shall be used in draw- ings and diagrams. 7.1.2* Symbol Presentation. 7.1.2.1* Symbol Shapes. The shape of symbols shall be as ilustrated in Sections 7.2 through 7.7. 7.1.2.2 Screened Lines. Screened lines in the chapter shall not be considered part of the symbol but shall be used to repre- sent the piping, wiring, or mounting surface associated with the symbol. 7.1.2.3 Symbol Scale. All scales for symbols on any one draw- ing shall be the same relative size. 7.1.2.4* Symbol Orientation. Symbols shall be oriented to the walls, piping, electrical lines, and so forth, to which they are attached. 7.2* Water Supply and Distribution Symbols. Water supply and distribution symbols shall be as given in Table 7.2. 7.3 Reserved. 7.4 Symbols Related to Means of Egress. Symbols related to means of egress shall be as given in Table 7.4. 7.5 Indicating Appliances. Symbols for indicating appliances shall be as given in Table 7.5. 7.6* Symbols for Fire Extinguishing Systems. 7.6.1 Various Types of Fire Extinguishing Systems. 7.6.1.1 Water-Based Systems. Symbols for water-based systems shall be as given in Table 7.6.1.1.
7.6.1.2 Dry Chemical Systems. Symbols for dry chemical systems shall be as given in Table 7.6.1.2. 7.6.1.3 Systems Utilizing a Gaseous Medium. Symbols for systems uilizing a gaseous medium shall be as given in Table 7.6.1.3. 7.6.1.4 Supplementary Symbols. Supplementary symbols shall be as given in Table 7.6.1.4. 7.6.1.5 Fire Pump-Type Symbols. Supplementary symbols shall be as given in Table 7.6.1.5. 7.6.1.6 Fire Pump Device Symbols. Supplementary symbols shall be as given in Table 7.6.1.6. 7.6.2 Symbols for Fire Sprinklers. Symbols for fire sprinklers shall be as given in Table 7.6.2. 7.6.2.1* For sprinklers shown in Table 7.6.2, the temperature rating of the sprinkler and other characteristics shall be shown via legends or noted on drawings where a limited number of an individual ype of sprinkler is called for by the design. 7.6.30 Symbols for Piping, Valves, Control Devices, and Hang- ers. Symbols for piping, valves, control devices, and hangers shall be as given in Table 7.6.3. 7.7 Symbols for Portable Fire Extinguishers. Symbols for portable fire extinguishers shall be as given in Table 7.7. 7.8 Symbols for Firefighting Equipment. Symbols for firefight- ing equipment shall be as given in Table 7.8. 7.9* Miscellaneous Symbols. Miscellaneous symbols shall be as given in Table 7.9.NFPA 170 pdf download.