HHSRS VERSION 2

SEPTEMBER 2004

HHSRS VERSION 2

LIGHTING

Vulnerable age

Related hazards

Front elevation

All ages

Fire

Yes

Yes

Kitchen

No

No

Multiple locations

Secondary hazards

Skylight over

Living room

Inner hall

Dwelling:

Front garden

Dead light

Bedroom 2

Glazed doors

Skylight over

covered passage

Plan of basement flat

Skylight over front passage

DESCRIPTION OF HAZARDS

Basement flat under Georgian villa

This two bedroom basement flat, in a large 4-storey Georgian villa converted into self-contained flats, lies

almost totally underground. Only the first bedroom has a normal window to the outside and this overlooks a

narrow entrance trench. The living room is lit by a large skylight constructed over the adjacent light well

which forms an extension to the room. The second bedroom is lit by borrowed light through a deadlight

from the living room and through glazed doors from the adjacent front passage which is lit by a smaller

skylight. The mechanically ventilated kitchen, bathroom, and inner hall have no means of natural lighting.

There are no normal eye-level views from any of the rooms in the flat, other than a restricted view of the

garden from the 1st bedroom.

LIST OF RELEVANT MATTERS

# Secondary hazards

-

3

-

-

Key

3

Seriously defective

-

2

Defective

3

1

Not satisfactory

3

-

Satisfactory

Lobby

Bedroom 1

Entrance trench

LIKELIHOOD & OUTCOMES

a

Obstruction - of windows

b

Size, shape and position

c

Position of artificial lighting

d

Control of artificial lighting

e

Glare etc

f

Window view

g

Outlook

A B C D E F G

H

I

J

Average likelihood, outcomes and HHSRS score for hazards from inadequate lighting for all

persons in all dwellings, 1995-96

Score

HHSRS VERSION 2

SEPTEMBER 2004

HEALTH AND SAFETY RATING SYSTEM SCORES

Pre 1920 converted s/c Flat

LIKELIHOOD

1 in

1

Low

High

Average: 50,825

Example

1

< 4200 2400 1300 750 420 240 130

75

42

24

13

7.5

4

2.5

1.5 >

Justification

OUTCOMES

Class I

Class II

Class III

Class IV

Justification

RATING

Wherever you are in this dwelling, you would be aware that it was built underground.

Only the first bedroom provides anything near the natural lighting conditions and outlook

that one would expect from a dwelling. The living room has barely adequate light but no

outlook, while all the remaining rooms are clearly devoid of both natural light and any

outlook whatsoever. Apart from the difficulty of reading without artificial light, it is likely

that most people would also suffer some psychological harm from living in the dwelling for

a year or more.

%

Average: 0.1

32

0.1

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 0.9

1.0

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 9.0

10.0

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 90.0

88.9

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

There is nothing to suggest that the outcomes will vary from the average.

Example

A B

Average: <1

C D E F G H

I

J

0.1

1.0

10.0

88.9

5889

Score

RATING SCORES AFTER IMPROVEMENT

IMPROVE

Justification

NEW RATING

Av: Nos

Likelihood to

1 in 180

Outcomes to

0.1

1.0 10.0 88.9 %

To improve the natural lighting and outlook from this dwelling would require the digging

out of the side garden to form a series of terraces dropping down to the living room and

2nd bedroom respectively. However, both the kitchen and bathroom would need to

remain internal. Consequently, the score would still remain higher than average after

such improvement.

Improved

Av: <1