Sprinklers Flashcards
What size main drain is required for a 6” riser?
2”
What class of standpipe is designed to “primarily” be used by building occupants? (I, II, III, IV)
I
Minimum design pressure for class 1 hose outlet on roof of high-rise BLDG. (65, 100, 130, 160)
100
What does a thermal barrier do?
Limits average temperature rise of unexposed surface to not more than 250 degrees after 15 minutes fire exposure.
What is the difference between closed array and open array?
Open arrays have smaller horizontal beam width. Open arrays are larger, heavier and require more power.
see page 13-17 under sprinklers. Paragraphs 3.9.1.1 and 3.9.1.2
What type of sprinkler head is required for new light hazard occupancy?
Standard response
What temperature range is indicated by a blue color code?
250-300 degrees
In which occupancy category would a hospital be listed?
Light Hazard
Annex A
What is the temperature classification of an unventilated attic?
Intermediate - Temperature
What is the maximum protection area coverage for any sprinkler?
400 square feet
Open building is 2900 Sq Ft. Assuming maximum coverage for any one head, what is the minimum number of sprinklers required?
8
Maximum ceiling temperature for wet sprinkler system for operation and maintenance is _______ degrees? (85, 95, 100, 110)
100
What is the minimum temperature for wet sprinkler system for operation and maintenance?
40 Degrees
Minimum distance from grade for Fire Department Codes F.D.C.? (12, 18, 24 and 36) inches
18 inches
What is the minimum design pressure for a class 1 hose outlet on the roof of a high rise building?
100PSI
What is the maximum distance of a fire dept connection from a standpipe system?
100’ Ft.
Fire dept connections should be located no less than how many inches above the level of the adjacent grade of access level?
Point of reference: The red and or brass Fire dept hookups on the side of large buildings coming out of the exterior wall.
18”
What is the max operating pressure of a standpipe system? (75, 100, 250 or 350 PSI)
Hint: Standpipe is a large normally painted pipe coming out of concrete that look like submarine telescopes.
350 PSI
