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. … They are required based on the use of the building or the height above or below fire department access.

What are the 3 classes of standpipes?

• Class I standpipes serve a 2.5-inch fire hose connection for fire department use. …
• Class II standpipes serve a 1.5-inch fire hose connection and are typically found in cabinets. …
• Class III standpipes have both connections of Class I and II.

How many standpipe classifications are there?

There are three classes of standpipes found within buildings: Class 1, 2, and 3. A Class 1 standpipe is designed for firefighting personnel only as it is equipped with just a 2½-inch outlet (see photo 1).