BU 1

It is the backbone of the entire sanitary system

• Main Soil & Waste vent

• Vent Stack

• Circulating & Water Closet

• Loop Vent

How many amperes when you using the 3.5mm² wire?

• 60amp

• 30amp

• 20amp

• 50amp

Used for changing alternating to direct current and vice versa

• Rotary Converters

• Alternating current

• Alternator

• Circuit Breaker

It is used to convert from higher to lower or lower to higher voltage

• Motor

• Circuit Breaker

• Rotary Converter

• Transformer

Number of drainage fixture unit of a sink (residential)

• 6

• 5

• 3

• 2

Number of drainage fixture unit of a water closet (public)

• 6

• 4

• 3

• 2

minimum size of trap for water closet

• 2"

• 3"

• 5"

• 1 1/2"

minimum size of trap for urinal wall mounter

• 2"

• 3"

• 5"

• 1 1/2"

minimum size of trap for floor drain

• 2"

• 3"

• 5"

• 1 1/2"

It is located on the water supply line of toilets and plumbing fixtures

• Globe valve

• Angle valve

• Ball valve

• Gate Valve