code of the plumbs eme

Which of the following installations do not require installation of a clean out?

• At upper end of every soil branch

• Any change in the direction of a soil branch exceeding 22.5 degrees

• At every branch interval of a soil stack

• Any horizontal pipe exceeding 15 meters

That portion of an underground system, which cannot drain by gravity into the building sewer.

• Sewer

• Building SUbdrain

• Sump

• Subsoil Drain

Answer explanation

Additional info:
- Subsoil Drain: an underground drainpipe that receives only subsurface or seepage water and convey it to a sump for disposal by gravity flow or by lift pump
- Sump: an approved tank or pit which receives sewage or wastewater and is located below the normal grade of the gravity system
- Sewer: a pipe or conduit for carrying sewage and wastewater

Estimated Sewage Flow Rate of Airports per Passenger is ______

• 94.6 LpD

• 26.5 LpD

• 18.9 LpD

• 56.8 LpD

Answer explanation

Additional info:
- 56.8 LpD- for Airports per Employee

What material do you use to cut galvanized steel pipe?

• Soil Pipe Cutetr

• 18 TPI Hacksaw

• Rotary Tube Cutter

• 14 TPI Hacksaw

Answer explanation

Additional info:
- Rotary Tube Cutter: suitable for copper, ductile iron, etc.
- Soil Pipe Cutter: suitable for cast iron

The inverts of all outlets shall be level and the invert of the inlet shall be at least ____ above the outlets.

• 101.6mm

• 25.4mm

• 50.8mm

• 104.6mm

Answer explanation

Additional info:
- This question pertains to the distribution box in a disposal field.
- For Septic tanks, the invert of the inlet pipe shall be at a level not less than 50.8 mm above the invert of the outlet pipe.

For metallic pipe fittings in fuel applications, threaded fittings in sizes larger than _____ shall not be used unless approved by the Authority having jurisdiction.

• 8 inches

• 4 inches

• 6 inches

• 5 inches

 

What is a type of vent applied on installations with multi-branch interval where the vertical vent pipe takes off in front of the first fixture and connects to a main vent stack?

• Circuit Vent

• Yoke Vent

• Loop Vent

• Relief Vent

Answer explanation

Additional info:
- Relief Vent: A vent installed so as to permit additional circulation of air between the drainage and vent systems where the drainage system might otherwise be air bound.
- Circuit Vent: A vent used in a battery of plumbing fixtures where the vent is installed in front of the last fixture of the battery; connects to the Vent Stack
- Loop Vent: almost similar as circuit vent, but connects to the Stack Vent

Cleanouts in pipings larger than 2" shall have a clearance of not less than _____ in front of the cleanout.

• 600mm

• 450mm

• 500mm

• 305mm

Answer explanation

Additional info:
- 305 mm- clearance for cleanouts in piping 51 mm or less

The primary function of this vent is to provide circulation of air between drainage and vent systems or to act as an auxiliary vent on a specially designed system. 

• Yoke Vent

• Local Vent

• Unit Vent

• Relief Vent

Answer explanation

Additional info:
- Local Vent- a pipe or shaft to convey foul air from a plumbing fixture or a room to the outer air
- Yoke Vent- a pipe connecting upward from soil or waste stack to a vent stack to prevent pressure changes in the stacks

Which fixture does not require cleanout on its horizontal drain having a length of less than 1.5 m?

• Bathtub

• Sink

• None of the choices

• Urinal

Answer explanation

Additional info:
- Cleanouts may be omitted on a horizontal drain line less than 1.5 m in length unless such line is serving sinks or urinals