A

-

Seriously defective

Defective

Not satisfactory

Satisfactory/NA

All ages

Fire

NOISE

Vulnerable age

Related hazards

HHSRS VERSION 2

SEPTEMBER 2004

HHSRS VERSION 2

Multiple locations

Yes

No

Secondary hazards

Yes

No

Plan of 1st floor

Kitchen

Bathroom

up

Common

stairs

1st Floor Flat

down

Living room

up

1st/2nd Floor Maisonette

Bedroom

Living room

DESCRIPTION OF HAZARDS

Dwelling: 1st floor flat in Regency mid-terraced house.

Background: This is a four storey Regency terraced house, with a two storey back addition,

situated on a quiet street. The house was converted in the 1960s to provide four self-contained flats

for rent - with flats in the basement and on the ground floor, a one bedroom flat on the first floor and

a further maisonette on the first and top floors. The large first floor front room in the original house

has been divided with a partition wall to provide the bedroom for the 1st floor flat and the living room

of the 1st/2nd floor maisonette. This partition wall provides poor sound insulation between the two

dwellings. The other internal and external 'party' walls to the first floor flat follow the original

structural walls and provide adequate sound insulation, as do the floors and ceilings which are of

traditional timber and lath and plaster construction.

LIST OF RELEVANT MATTERS

# Secondary hazards

-

None

Key

3

2

1

-

LIKELIHOOD & OUTCOMES

A

a

Site of dwelling

-

b

Internal insulation

3

c

External insulation

-

d

Disrepair

-

e

Siting of plumbing

-

f

Equipment - noisy

-

g

Door closers

-

A B C D E F G H

I

J

Average likelihood, outcomes and HHSRS score for hazards associated with noise for all

persons in pre 1920 houses in multiple occupation, 1997-99.

Score

HHSRS VERSION 2

SEPTEMBER 2004

HEALTH AND SAFETY RATING SYSTEM SCORES

Pre 1920 converted s/c Flat

1 in

6

LIKELIHOOD

Low

High

Average: 620

Example

6

< 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

The partition wall dividing the original front first floor room comprises 4 by 2 inch studs

with plasterboard and skim both sides, with no insulation or filling of any kind. Although

solidly built, the construction of this wall and the fact that it separates the living room in

the 1st/2nd floor maisonette from the only bedroom in the 1st floor flat, means that there

is a high likelihood that any occupant/s of that 1st floor flat will be disturbed by normal

activity in the maisonette and will lose privacy (and vice versa).

%

Average: 0.0

0.0

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

Av: 1.0

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

89.0

< 0.05 0.15 0.3

0.7

1.5

3

7

15

26

38 >

4

0.0

1.0

10.0

89.0

Despite the high likelihood of activity in the maisonette causing some disturbance to the

occupant/s of the flat, particularly at night, the spread of health outcomes is judged to be

average for the hazard.

Average: 7

I

J

Example

A B C D E F G H

815

Score

RATING SCORES AFTER IMPROVEMENT

IMPROVE

Justification

NEW RATING

Av: Nos

Likelihood to

1 in 1,000

Outcomes to

0

1.0 10.0

89 %

Demolishing the existing internal 'party' wall between the the bedroom of the first floor

flat and the living room of the top maisonette and replacing it with one built to current

Building Regulation standards would reduce the likelihood to better than average and the

outcomes to average for pre 1920 converted dwellings. However, to improve fire safety,

other works are required to avoid the only means of escape from the bedroom being via

the living room.

Improved