L05 - Residential Building Services and Interior Finishes

Question 1

Why are drains protected by traps

Answer 1

To prevent odours and sewer gases from entering house

Question 2

True or False:
Traps are designed within each plumbing fixture to prevent odours and sewer gasses from entering the house.

Answer 2

True

Question 3

Drains through walls have _______

Answer 3

P-traps

Question 4

Drains through floors have ______

Answer 4

S-traps

Question 5

P- or S-shaped bends in drain pipes called ___ are designed within each plumbing fixture to prevent odours an sewer gases from entering the house.

Answer 5

Trap

Question 6

As discussed, the most appropriate solution for venting an island kitchen sink is…

Answer 6

an air admittance valve (AAV)

Question 7

What is an alternative to discharging into soil stack

Answer 7

Gully trap

Question 8

What do gully traps do?

Answer 8

Prevents foul air escaping drainage system

Question 9

If drain pipes combined OR run to gully trap ____m+ fixture vent is required

Answer 9

3.5m+

Question 10

True or False:
Gully traps can be used in lieu of a fixture vent only if it is at least 3.5m away from the fixture (eg. sink)

Answer 10

False

Question 11

The primary treatment of wastewater in a private system involves a “ _” using anaerobic bacteria to break down any pathogens contained in the effluent.

Answer 11

septic tank

Question 12

True or False:
The primary treatment of wastewater in a private system involves anaerobic bacteria to break down pathogens.

Answer 12

True

Question 13

True or False:
The primary treatment of wastewater in a private system involves aerobic bacteria to break down pathogens.

Answer 13

False

Question 14

True or False:
A drainage (leach) field can be used without a septic tank when sited in well-drained, sandy soil

Answer 14

False

Question 15

A thickened internal wall containing a concentration of plumbing work is often called a “____ wall”.

Answer 15

wet

Question 16

In the case of an overhead ‘service drop’, the conductors from a nearby power pole will connect to the house and form a “ “ which prevents water from entering the electrical equipment.

Answer 16

drip loop

Question 17

True or False:
Overhead ‘service drops’ have drip loops to prevent water from entering the electrical equipment via the conductor.

Answer 17

True

Question 18

A “_____” is a type of overcurrent devices that is physically destroyed when tripped

Answer 18

fuse

Question 19

True or False:
Glass fibre batts is the most popular for insulating wall cavities in new construction

Answer 19

True

Question 20

Popular option for attic spaces or wall cavities using a ‘binder’
(blown element)

Answer 20

Loose-fill

Question 21

Which type of thermal insulation can be injected into wall cavities of uninsulated older homes?

Answer 21

Foamed in place

Question 22

Which insulation is most appropriate to expose the timber roof framing within skillion roof (with cathedral ceiling)?

Answer 22

Rigid Board (polystyrene)

Question 23

For stairs the ‘Proportional Step Rule’ equates to Twice Rise + Run = ___mm

Answer 23

600, 600mm