NFPA 231D-1998 Standard for Storage of Rubber Tires.
4-1 Automatic Sprinkler Systems. 4-1.1 Automatic sprinklers shall be installed in accordance with NFPA 13, Standard for the Installation of Sprinkler Systems, except as modified by this standard. 4-1.2* Sprinkler discharge and area of application shall be in accordance with Table 4-1.2(a) for 1 / 2 -in. (12.7-mm), 17 / 32 -in. (13.5-mm), 5 / 8 -in. (15.9-mm), and 0.70-in. (17.8- mm) sprinklers. For large-drop and ESFR sprinklers, refer to Tables 4-1.2(b) and (c), respectively. 4-1.3 System Requirements. For the purposes of this stan- dard, the required sprinkler protection in buildings used in part for tire storage shall extend 15 ft (4.6 m) beyond the perimeter of the tire storage area. 4-1.4 In-Rack Sprinkler System Requirements. 4-1.4.1 In-rack sprinklers, where provided, shall be installed in accordance with NFPA 231C, Standard for Rack Storage of Materials, except as modified by 4-1.4.2 through 4-1.4.4. 4-1.4.2 The maximum horizontal spacing of sprinklers in racks shall be 8 ft (2.4 m). 4-1.4.3 Sprinklers in racks shall discharge at not less than 30 psi (207 kPa). 4-1.4.4 Water demand for sprinklers that are installed in racks shall be based on the simultaneous operation of the most hydraulically remote 12 sprinklers where only one level is installed in racks.
5-3 Cutting and Welding Operations. 5-3.1 Where welding or cutting operations are necessary, the requirements of NFPA 51B, Standard for Fire Prevention in Use of Cutting and Welding Processes, shall apply. Where possible, work shall be removed to a safe area. 5-3.2 Welding, soldering, brazing, and cutting shall be per- mitted to be performed on rack or building components that cannot be removed, provided no storage is located below and within 25 ft (7.6 m) of the working area and provided flame- proof tarpaulins enclose this area. During any of these opera- tions, the sprinkler system shall be in service. Extinguishers suitable for Class A fires with a minimum rating of 2A and charged inside hose lines, where provided, shall be located in the working area. A fire watch shall be maintained during these operations and shall be maintained for not less than 30 minutes following completion of open-flame operation. 5-4* Waste Disposal. Rubbish, trash, and other waste mate- rial shall be disposed of at regular intervals. 5-5 Smoking. Smoking shall be strictly prohibited. Signs that read no smoking shall be posted in areas where smoking is pro- hibited. Exception: Signs shall not be required to be posted in locations that are prominently designated as smoking areas. 5-6 Maintenance and Inspection. 5-6.1 Fire walls, fire doors, and floors shall be maintained in good repair at all times.
NFPA 231D pdf download.