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Design Criteria

Fire Sprinkler Design Criteria

With technology changing ever so quickly, the codes cannot keep up with these new technologies. New information such as, burn tests results, fire modeling, fire sprinklers, and more definitive fire codes can keep even the fire code professionals struggling to understand. We can only imagine how difficult it must be for the lay person to understand.

On behalf of our clients, we at Premier Fire Consulting, LLC will take your specific needs for your warehouse; design a plan that will comply with those needs to meet current codes requirements. Below are examples of common fire sprinklers systems and the capabilities of each system.

.20 gpm for 1,500 sq. ft

This system is designed for an Ordinary Hazard Group II Occupancy using 165 degree sprinklers. With this design there should not be any storage of Class I through IV commodities over 12'-0" in solid piles or in-racks. As well as flammable liquids, Group A Plastics and idle pallets stored over 6'-0".

.33 gpm for 3,000 sq. ft

This system, with 286 degree-fire sprinklers, will allow 20'-0" of rack storage of Class III non-encapsulated commodities on conventional wooden pallets with minimum 8'-0" aisles, and no in-rack fire sprinklers. NFPA 13, 2010 Edition, Figure 16.2.1.3.2(c).

.45 gpm for 3,000 sq. ft

This system, with 286 degree-fire sprinklers, will allow 20'-0" of rack storage of Class IV non-encapsulated commodities on conventional wooden pallets with minimum 8'-0" aisles, and no in-rack fire sprinklers. NFPA 13, 2002 Edition, Figure 16.2.1.3.2(d).

.60 gpm over 3,000 sq. ft.

This system, with 286 degree-fire sprinklers, will allow 25'-0" of rack storage of Class III non-encapsulated commodities on conventional wooden pallets with a minimum 8'-0" aisles, and no in-rack fire sprinklers. (NFPA 13, 2010 Edition, Figure 16.2.1.3.2 (c)) This configuration would also allow 22'-0" of Class IV non-encapsulated commodities on conventional wooden pallets with an 8'-0" aisle and non in-rack fire sprinklers (NFPA 13, 2010 Edition, Figure 16.2.1.3.2 (d).

Note: Other storage arrangements are possible with the design criteria shown above.

Suppression Systems

ESFR K-14

50 PSI Starting Pressure allows for class I, II, III, IV or cartoned unexpanded plastics, encapsulated or non encapsulated commodities to be stored in a building with a maximum peak height of 30' with 25' of storage.

75 PSI Starting Pressure allows for class I, II, III, IV or cartoned unexpanded plastics, exposed unexpanded plastics; encapsulated or non encapsulated commodities to be stored in a building with a maximum peak height of 35' with 30' of storage. (Effective Jan 1, 2014)

90 PSI Starting Pressure allows for class I, II, III, IV or cartoned unexpanded plastics, exposed unexpanded encapsulated or non encapsulated commodities, to be stored in a building with a maximum peak height of 45' with 40'of storage.

ESFR K-17

35 PSI Starting Pressure allows for Class I, II, III and IV and cartoned unexpanded plastics encapsulated or non encapsulated, to be stored in a building with a maximum peak height of 30' with 25'of storage.

52 PSI Starting Pressure allows for class I, II, III, IV and cartoned unexpanded plastics, encapsulated or non encapsulated, to be stored in a building with a maximum peak height of 40' with 35'of storage.

63 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, to be stored in a building with a maximum peak height of 45' with 40'of storage.

35 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, to be stored in a building with a maximum peak height of 35' with 30'of storage.

40 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, to be stored in a building with a maximum peak height of 45' with 40'of storage.

ESFR K-25

15 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, be stored in a building with a maximum peak height of 20' with 30'of storage.

20 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, be stored in a building with a maximum peak height of 35' with 30'of storage.

25 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, be stored in a building with a maximum peak height of 40' with 35'of storage.

40 PSI Starting Pressure allows for cartoned expanded plastics: cartoned expanded plastics; uncartoned expanded plastics; and Class I, II, III and IV commodities, encapsulated or non encapsulated, be stored in a building with a maximum peak height of 40' with 35'of storage.

 

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