What is pipe schedule method?
What is pipe schedule method?
According to NFPA 13, Pipe Schedule System is defined as sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe.
What is a pipe schedule fire sprinkler system?
fire sprinkler systems were designed using the pipe schedule method. In a pipe schedule design, the sprinkler system designer had to know the hazard classification of the building or contents to be protected, the amount and duration of the water supply, and the specific placement or spacing of automatic sprinklers.
What is ordinary hazard?
Ordinary Hazard (Group 1) — This classification applies to spaces in which the combustibility of materials present is low and the quantity is moderate, with no stockpiles of combustible material exceeding 8 feet (2.4 meters).
What schedule is sprinkler pipe?
The Schedule number equates to the wall thickness of the steel pipe. The lower the schedule number, the thinner the wall of the pipe. For a sprinkler system, only Schedule 40 is used.
How do I know what size irrigation pipe I need?
First, find a piece of string. Now, wrap the string around the pipe and mark the point where the string crosses. The length between the marks gives you the pipe size.
What are some examples of ordinary hazard occupancies?
Some businesses and environments that constitute an ordinary hazard are malls, light manufacturing or research operations, parking garages, workshops, automobile showrooms, electronics plants, laundries, restaurant service areas, drink manufacturing, or maintenance/service areas.
What is hazard classification?
Hazard Classification is a process required under paragraph (d) of 29 CFR 1910.1200 (the OSHA Haz-com standard) Specifically: Classification lists the specific Classes of hazards, for example carcinogenicity or flammable solid. Within the Hazard Classes the degree of hazard is indicated with a Category.
How are pipe schedules used in firefighting?
What are pipe schedules?! Pipe schedules are used for sizing of firefighting sprinklers system piping in “pipe schedule method” which is used to determine the system demand. For more information about pipe schedule method for determining sprinkler system demand, please click here.
How much psi do you need for a pipe Schedule?
While the pipe schedule approach had previously served as an acceptable design option for a wider range of buildings and spaces, it’s misuse has resulted in its restricted application. NFPA 13, 2002, table 11.2.2.1 for a light hazard requires 15 psi at 500-750 gpm.
How is pipe Schedule system determined for sprinklers?
What is pipe schedule system?! According to NFPA 13, Pipe Schedule System is defined as sprinkler system in which the pipe sizing is selected from a schedule that is determined by the occupancy classification and in which a given number of sprinklers are allowed to be supplied from specific sizes of pipe. Where can we use pipe schedule method?!
What was the NFPA pipe Schedule System in 1905?
By prescribing a maximum num- ber of sprinklers on a given size head, pressure losses were controlled. In 1905, NFPA revised the pipe schedule system. The 1905 system was called the 1-2-3 pipe schedule system. Beginning with 1-1⁄4-in. pipe, the maximum number of sprinkler heads permitted was reduced.