Services

Question 1

Different Types Of Services (7)

Answer 1

Water supply 
Hot water
heating
Drainage
Gas
Electricity
Telephone

Question 2

What is the principle of a passive house

Answer 2

Minimises use of a house required to meet heat and cooling

Question 3

Code for sustainable homes minimum standards

Answer 3

Energy
Water
Materials
Surface water run off
Waste
Pollution
Health and well-being
Management 
Ecology

Question 4

What can a boiler be fuelled by

Answer 4

Soild Fuel
Oil
Gas
Biofuel

Question 5

What to consider for a heating system at design stage

Answer 5

Fuel availablity
Comfort factors
Pattenrs of use
Control
Maintenance
Security
Heat loss calculations

Question 6

Three hot water heating by radiators

Answer 6

Single: looped in tandem, cheap but difficult to install
Twin: Separate flow and return
Microbore:Variants of the twin pipe layout. Manifold at each floor

Question 7

Rainwater must be disposed in one of three ways

Answer 7

Soakaway or other infiltration device
Watercourse,
Sewer

Question 8

Sustainable drainage systems (SUDS)

Answer 8

Green roofs:
Water butts and tanks:
Soakaways:
French Drains:
Infiltration trenches:
Swales:
Attenuation ponds:

Question 9

Three Systems of drainage

Answer 9

Separate: foul and surface water separate
Combined: discharged into same sewer
Partially separate: certain amount of surface water discharges to foul sewer while the rest if carried in a surface water sewer

Question 10

What is greywater

Answer 10

Foul from cooking and washing

Question 11

Designing a drainage system

Answer 11

Layout must be simple
Pipes must be laid straight
Pipes in non absorbent material
Pipes must be supported
Must be properly ventilated
Accessible for cleaning and inspection
0.8m/s min 2m/s speed
Must be 900mm below roads

Question 12

Building regulations access to drains at the following points

Answer 12

change in direcion
at a junction
long runs
change of pipe size

Question 13

Water test

Answer 13

Fill drain with water to give not greater than 50kPa pressure, above 1m of highest section of peipe
leave for 30 mins then note loss of water

Question 14

Types of air pressure tests

Answer 14

Set test pressures
Pressure drops
Testing times

Question 15

Minimum gas main depths

Answer 15

Road verge 750mm
Footpath
Private footpath
Private

Question 16

Main ways to reduce demand for space heating

Answer 16

high levels of insulation
high performance windows with insulated frames
Airtight building fabric
Thermal bridge free construction
Mechanical system with highly efficient heat recovery (where warm stale heat goes through a heat exchanger and pre-heats the incoming fresh air.
Thermostatic Radiator Valves (timer on a boiler)
Smart meters

Question 17

Different types of space heating (direct and indirect)

Answer 17

Radiant heater
Convection heater
Fan heaters
Storage heating
Domestic elecretical underfloor heating
Lighting system
Heat pumps
Radiators 
Warm air

Question 18

What are heat pumps

Answer 18

Two way air conditioners. During summer an air con works by moving heat ffrom relatively cool indoors to the warm outside. In winter it reverses and scavenges heat from outside.

Question 19

Advantages of heat pumps

Answer 19

Lower running costs
Less Maintenance 
Safer than alternatives
Low carbon emissions
Long life expectancy
Provide cooling

Question 20

Disadvantages of heat pumps

Answer 20

High upfront costs
Difficult to install
Questionable sustainbility
Carbon neutral
Fan= noise issue