Master Plumber Exam Philippines Master Plumber Code and Regulations

Question 1

Under the National Plumbing Code of the Philippines (NPCP), what is the minimum trap seal depth required for fixture traps?

Accepted Answer

38 mm (1.5 inches)

Answer

25 mm (1 inch)

Answer

50 mm (2 inches)

Answer

75 mm (3 inches)

Question 2

According to the Philippine Sanitation Code (PD 856), what is the minimum distance between a deep well and a septic tank?

Accepted Answer

25 meters

Answer

10 meters

Answer

15 meters

Answer

20 meters

Question 3

In the NPCP, what is the fixture unit (FU) value assigned to a lavatory (washbasin) for drainage load calculation?

Accepted Answer

1 FU

Answer

2 FU

Answer

3 FU

Answer

4 FU

Question 4

What does 'PN6' designation mean for PVC pressure pipes used in water supply systems in the Philippines?

Accepted Answer

Pressure Nominal rating of 6 bar (600 kPa)

Answer

Pipe Nominal diameter of 6 mm

Answer

Philippine National Standard Grade 6

Answer

Pipe Network classification 6

Question 5

Under the NPCP, what is the maximum trap arm length (distance from trap weir to vent) for a 38 mm (1½-inch) drain pipe?

Accepted Answer

1.5 m (5 ft)

Answer

0.75 m (2.5 ft)

Answer

1.0 m (3.3 ft)

Answer

1.8 m (6 ft)

Question 6

According to the NPCP, what minimum size vent pipe is required for a water closet?

Accepted Answer

50 mm (2 inches)

Answer

25 mm (1 inch)

Answer

32 mm (1¼ inches)

Answer

38 mm (1½ inches)

Question 7

What is the minimum number of water closets required per 100 male employees in a factory or industrial establishment under the Philippine Sanitation Code?

Accepted Answer

2

Answer

1

Answer

3

Answer

4