How are standpipe systems classified?

There are three classes of standpipe systems, they include Class I, Class II, and Class II.

What are the different classifications for standpipes and who is the intended user?

The classification and installation requirements for standpipe systems are identified in NFPA 14, Standard for the Installation of Standpipe and Hose Systems. Standpipes are categorized as class I, class II, or class III. These classifications are based on the hose connection size and intended user of the hose.

What are the types of standpipe and hose systems?

Following are four types of standpipes that you will find in use:

• Wet system. Here, water is in the pipes at all times and is supplied by a water source.
• Automatic dry standpipe. Here, there is always air stored inside the standpipe at a constant pressure.
• Semi-automatic dry standpipe.
• Manual dry standpipe.

Which NFPA addresses standpipes and hose systems?

NFPA 14
NFPA 14 provides requirements for the installation of standpipes and hose systems to ensure that systems will work as intended to deliver adequate and reliable water supplies in a fire emergency.

What is a Class 1 standpipe and hose system?

Class I standpipes serve a 2.5-inch fire hose connection for fire department use. These connections must match the hose thread utilized by the fire department and are typically found in stairwells of buildings. Class II standpipes serve a 1.5-inch fire hose connection and are typically found in cabinets.

What is a Class I standpipe system?

Class I – A Class I standpipe system shall provide a 2 1/2 inch hose connec- tion for use primarily by trained person- nel or by the fire department during ini- tial response. This class has no hose attached.

What is a Class 2 standpipe system?

Class II – A Class II standpipe system shall provide 1 1/2 inch hose stations to supply water for use primarily by trained personnel or by the fire department dur- ing initial response. These are typically found in cabinets with 100′ of hose.

Which class of standpipe system is intended solely for use by fire fighters?

Class I standpipes are intended to be used by the fire department, and are equipped with a valve and 2.5-inch hose connection at each location. The water supply is designed for 500 gallons per minute (gpm) for the first connection, plus 250 gpm for each additional connection, up to a maximum of 1,250 gpm.

What are the three classes of standpipe systems?

The Three Types of Standpipe Systems

• Class I Systems. Class I Systems [2-1/2″ (64mm) hose connections] are provided for use by fire departments and those trained in handling heavy water streams.
• Class II Systems.
• Class III Systems.

When and where standpipes and hose systems are required in buildings?

Standpipe and hose systems shall be provided as follows: Class I standpipe systems shall be provided for any building three or more stories in height. Class III standpipe and hose systems shall be provided for all non-sprinklered buildings three or more stories in height.

Where are standpipe systems required?

In addition, standpipes are required in high-rise buildings and some stage areas in assembly occupancies. Some occupancies also mandate the presence of standpipes, such as detention and correctional occupancies, airport terminals and piers, at certain thresholds.

What is class 3 standpipe system?

Class III standpipe system means a combined system of hose which is for the use of employees trained in the use of hose operations and which is capable of furnishing effective water discharge during the more advanced stages of fire (beyond the incipient stage) in the interior of workplaces.

What are the requirements for a standpipe hose system?

The employer shall assure that standpipe hose is equipped with shut-off type nozzles. Water supply. The minimum water supply for standpipe and hose systems, which are provided for the use of employees, shall be sufficient to provide 100 gallons per minute (6.3 l/s) for a period of at least thirty minutes.

Does this section apply to Class I standpipe systems?

This section does not apply to Class I standpipe systems. Protection of standpipes. The employer shall assure that standpipes are located or otherwise protected against mechanical damage. Damaged standpipes shall be repaired promptly. Reels and cabinets.

Does OSHA apply to standpipes?

This section applies to all small hose, Class II, and Class III standpipe systems installed to meet the requirements of a particular OSHA standard. Exception. This section does not apply to Class I standpipe systems. Protection of standpipes. The employer shall assure that standpipes are located or otherwise protected against mechanical damage.

Where are fire standpipes required to be located?

Class I standpipes shall be located at an intermediate floor level landing between floors, unless otherwise approved by the fire department. Class I standpipes are required on each side of a horizontal exit, in every exit passageway, on the roof or highest landing where the roof has a slope less than 4:12. The fire department is also author-