Sprinklers

Question 0

What size main drain is required for a 6” riser?

Answer 0

2”

Question 1

What class of standpipe is designed to “primarily” be used by building occupants? (I, II, III, IV)

Answer 1

I

Question 2

Minimum design pressure for class 1 hose outlet on roof of high-rise BLDG. (65, 100, 130, 160)

Answer 2

100

Question 3

What does a thermal barrier do?

Answer 3

Limits average temperature rise of unexposed surface to not more than 250 degrees after 15 minutes fire exposure.

Question 4

What is the difference between closed array and open array?

Answer 4

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

Question 5

What type of sprinkler head is required for new light hazard occupancy?

Answer 5

Standard response

Question 6

What temperature range is indicated by a blue color code?

Answer 6

250-300 degrees

Question 7

In which occupancy category would a hospital be listed?

Answer 7

Light Hazard

Annex A

Question 8

What is the temperature classification of an unventilated attic?

Answer 8

Intermediate - Temperature

Question 9

What is the maximum protection area coverage for any sprinkler?

Answer 9

400 square feet

Question 10

Open building is 2900 Sq Ft. Assuming maximum coverage for any one head, what is the minimum number of sprinklers required?

Answer 10

8

Question 11

Maximum ceiling temperature for wet sprinkler system for operation and maintenance is _______ degrees? (85, 95, 100, 110)

Answer 11

100

Question 12

What is the minimum temperature for wet sprinkler system for operation and maintenance?

Answer 12

40 Degrees

Question 13

Minimum distance from grade for Fire Department Codes F.D.C.? (12, 18, 24 and 36) inches

Answer 13

18 inches

Question 14

What is the minimum design pressure for a class 1 hose outlet on the roof of a high rise building?

Answer 14

100PSI

Question 15

What is the maximum distance of a fire dept connection from a standpipe system?

Answer 15

100’ Ft.

Question 16

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.

Answer 16

18”

Question 17

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.

Answer 17

350 PSI