Sem 2 - Water Supplies

Question 1

Ceiling voids should provide a minimum of what

Answer 1

350mm

Question 2

what is the standard floor to ceiling height

Answer 2

2.7m

Question 3

What part of the building regulations covers water supply

Answer 3

Part G

Question 4

The standard water pressure given by water companies is what? and how high can that water be feed too?

Answer 4

0.7 bar - 7m high

Question 5

How can legionnaires disease be caught

Answer 5

through air born particles and not drinking water.

Question 6

Why does a commercial building need to be pressurised in terms of water.

Answer 6

as pipework under too much pressure can damage.

Question 7

how much fluoride is added per litre of water.

Answer 7

1mg.

Question 8

Indirect water supply is what

Answer 8

water that is feed into water storage tank stored at high level which is gravity feed to outlets.

Question 9

What water temperature does the HSE recommend water be stored at to stop legionnaires disease

Answer 9

60 degrees and circulates at temperatures no less than 55 degrees

Question 10

What water temperature can legionnaires bacteria grow.

Answer 10

20-45 degrees

Question 11

raised floors should provide a minimum of what

Answer 11

150mm

Question 12

A good boiler modulation can what

Answer 12

reduce the constant on/off cycling and the increased amount of energy that comes with it. Also reduces wear and tear on components increasing the longevity.

Question 13

1 bar of water pressure will raise water up to what meters high

Answer 13

10m

Question 14

Part G of the building regulations says that water should be what when it is drawn off

Answer 14

Wholesome.

Question 15

direct hot and cold water supply is also know as

Answer 15

Mains pressure feed hot and cold water.

Question 16

An un-vented water cylinder is what

Answer 16

A vessel that is filled with cold water fed directly from the incoming supply. The vessel is kept uder pressure and heated by immersion heaters (direct model such as - megaflow)

Question 17

What does a check valve do

Answer 17

Allows water to flow in one direction only.

Question 18

A vented indirect water cylinder is what.

Answer 18

a water cylinder that is fed from a header tank located at high level.

Question 19

Water pressure into a property depends on what.

Answer 19

how high the property is in relation to the reservoir or water tower.

Question 20

What are the three methods of rainwater disposal set out in the building regulations in their order

Answer 20

soakaway, watercourse, sewer