The 18-inch rule refers to the required clearance from materials stored below a sprinkler head so as not to interfere with the water spray.
NFPA 1983: Standard on Life Safety Rope and Equipment for Emergency Services
Life Safety Code addresses the features of a structure that provide for protection of the occupants from injury or death due to fire or explosion. Such features include requirements for structure, exits, limits on occupancy types, limits on occupant numbers, fire protection systems and operating procedures to maintain safety. The National Fire Protection Association (NFPA) maintains a Life Safety Code under NFPA 101, which contains cross references to other NFPA standards, building standards and engineering standards.
Life Safety Code, NFPA 101 ®, specifies the requirements for when fire doors are necessary, and what rating is required, in each different type of occupancy.
There are several NFPA handbooks, includingFire Protection Handbook®NFPA 1: Fire Code HandbookNFPA 13: Automatic Sprinkler Systems HandbookNFPA 13D and NFPA 13R: Automatic Sprinkler Systems for Residential Occupancies Handbook,NFPA 20: Stationary Fire Pumps HandbookNFPA 25: Water-Based Fire Protection Systems HandbookNFPA 30 and NFPA 30A: Flammable and Combustible Liquids Code HandbookNFPA 54: National Fuel Gas Code HandbookNFPA 58: LP-Gas Code HandbookNational Electrical Code® HandbookNFPA 72® National Fire Alarm and Signaling Code HandbookNFPA 101®: Life Safety Code® Handbooknot to mention several manuals, such asFire and Life Safety Inspection ManualNursing homes - NFPA Fire and Life Safety Inspection Manual
The specific, applicable NFPA standards would depend upon the type of occupancy and quantity of storage, among other things. You would start with NFPA 101 for Life Safety Code and NFPA 1 for Fire Code and follow their respective references, or see if there is a specific standard for your type of occupancy, e.g., NFPA 430 Code for the Storage of Liquid and Solid Oxidizers.
What is the response time to a fire alarm system under the nfpa code book or life safety 101 code book.
A stadium is considered an "assembly occupancy" under NFPA 101 Life Safety Code and NFPA 1 National Fire Code. Depending upon your particular issues, there would be cross-referenced standards that are also applicable to components such as sprinkler systems, fire extinguishers, construction types, use of LP-powered vehicles inside, etc, not to mention National Electrical Code (NFPA 70) and possibly dozens of others.
There are several NFPA standards that reference fire hydrant requirements, for various parameters, including NFPA 1 Fire Code and NFPA 101 Life Safety Code. You may also be interested in NFPA 291 Recommended Practice for Fire Flow Testing and Marking of Hydrants NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems or NFPA 1142 Standard on Water Supplies for Suburban and Rural Fire Fighting
The National Electrical Code® is published as NFPA 70, the NEC®, in addition to NFPA 70A for one- and two-family dwellings, NFPA 70B for Electrical Equipment Maintenance and NFPA 70E, the Standard for Electrical Safety in the Workplace®.
NFPA 70
NFPA 101® "Life Safety Code®" includes "occupancy" chapters stating the specific requirements for marking of exits, Chapter 7 ("Means of Egress") specifies how signs should be configured, when required by an occupancy chapter (i.e., size, location, lighting, etc). These same exit marking specifications are inserted and cross-referenced in NFPA 1 Fire Code, Chapter 14.
In the USA, the National Electrical Code is NFPA 70. There are several national fire codes, including National Fire Code (also called Uniform Fire Code); NFPA 1 (National Fire Protection Association) and the International Fire Code (International Code Council). Each of these references hundreds of other codes and standards, including Life Safety Code, Building Code, Electrical Code, etc.