© Warwick University 2005 Session 6 Introduction to the worked examples

© Warwick University 2005 Worked Examples Two pages – Page 1 describes dwelling & details of deficiencies relevant to hazard Page 2 shows stages in scoring with justification and re-scoring on the basis of suggested remedial works

© Warwick University 2005 Page 1Page 2

© Warwick University 2005 Worked Example Description

© Warwick University 2005 Worked Example: Damp & Mould

© Warwick University 2005 Worked Example: Cold

© Warwick University 2005 Worked Example: Ergonomics

© Warwick University 2005 See: midlandsdash.org.uk midlandsdash.org.uk Q. Where is the overall hazard score from the dwelling? A. There is no single overall hazard score for the dwelling - more hazards = higher risk but cannot simply add the scores Frequently Asked Questions

© Warwick University 2005 Q. How do you deal with mixed-use accommodation, such as a flat over a shop? A. Deal with the unit of accommodation - the sleeping, living, food preparation and bathroom accommodation AND all the common and shared areas. If the shop impacts on the unit of accommodation then take it into account. E.g. hazards such as structural stability and fire safety in the shop could well affect the accommodation unit. FAQs

© Warwick University 2005 Session 7 Rating hazards - some exercises and comparison of results

© Warwick University 2005 In this session you will look at a number of scenarios On the basis of information provided –Consider the likelihoods and outcomes and produce a score for the hazard described; and –note down the justification for that score (looking at both likelihood and spread of harm outcomes) After each hazard has been scored the results (including justifications) will be compared and discussed Exercises

© Warwick University 2005 Damp and mould (1) Front elevation Rear elevation Dwelling: two storey terraced house built in There are two bedrooms in the house; there is a bathroom on the first floor and a WC in the rear addition on the ground floor. There is damp affected ceiling plaster in the rear bedroom as the result of disrepair around on the roof around the chimney stack. There is damp affected wall plaster in the WC and also some mould growth. DESCRIPTION OF HAZARD Rear bedroom ceiling WC compartment

© Warwick University 2005 Falls on the level (20) Dwelling: Pre-1919 terraced house. Front elevation There is a step at the front door with a threshold to the new uPVC door and frame. There is step up from the front hall through the door into the ground floor main hall. From the ground floor rear room there is a step down into the back addition kitchen. From the kitchen there is a step down into the back addition lobby, and a step up into the back addition shower room. The floor boarding to the kitchen is holed close to the step down. There is a step down into the rear yard at the rear door. Concrete to the rear yard is broken and uneven. DESCRIPTION OF HAZARD Front door (ext)Rear door & yard Kitchen/back addition lobby From GF rear room

© Warwick University 2005 Fire (24.1) DESCRIPTION OF HAZARD Dwelling: First floor rear left bedsit, in a pre- 1920, three storey, terraced HMO. Rear elevation Partition wall Corridor to the staircase Staircase Bedsit The dwelling in common with the 21 other dwellings in the building has an electric cooker. There is a smoke detector (mains operated) linked to a hard wired alarm system – in this unit both are adjacent to the door opening. The doors to the units are half-hour fire resistant, but there are no intumescent strips. There is double door protection with a “fire door” between the door of the letting and the main escape route. There is disrepair to the lath and plaster partition walls to the letting and to the landing. The nosings to the main escape route (internal staircase) down to the ground floor are loose and worn. The second escape route is a timber staircase at the far end of the building. Front elevation

© Warwick University 2005 DESCRIPTION OF HAZARD Structural collapse and falling elements (29) Front elevation and roof Rear house wall Rear (external) wall in rear bedroom Dwelling : Pre 1920 mid- terrace house The property is entered directly off the street. There are a number of tagged, slipped and missing slates to the front and rear house roofs. The brick arch to the ground floor rear room has dropped and there is a slight fracture to the rear wall above. A crack has appeared in the rear wall to the first floor rear room (above the window to the ground floor rear room).

© Warwick University 2005 Refuse storage Sub-floor space Vent to sub-floor space Rat caught in grounds DESCRIPTION OF HAZARD The block is adjacent to a railway line and a small water course, and there is a rat infestation in the area. Rats have gained access to the sub-floor space and one way appears to have been by gnawing through the plastic ventilator. The landlord has now contracted a pest control servicing company to bait the area and the sub-floor space. Refuse is stored in sacks and bins in the grounds, and is collected weekly. Much of the grounds and landscaping surrounding the flats is overgrown. Domestic Hygiene, Pests and Refuse (15) Dwelling: The property is a ground self-contained floor flat in a block of eight flats constructed in 1975 Front elevation

© Warwick University 2005 Damp and mould (1) Dwelling: Three bedroom flat on the north west corner of the seventh floor of a twenty storey block constructed in Living room ceiling Kitchen wall Second bedroom ceiling View of of block DESCRIPTION OF HAZARD The ceilings in all bedrooms are affected by some mould growth although the worst affected is the second bedroom. There is also some mould growth in the living room and kitchen. The space heating is by electric storage heaters, and the windows are double glazed aluminium framed and there are no trickle vents. There are no clothes drying facilities within the block, and no balconies to the flat. There are in addition two ventilators in the kitchen walls where ventilated food storage was provided originally and which are draughty.

© Warwick University 2005 Wall of ground floor rear room Front wall of front Front bedroom window Reveal at front bedroom window DESCRIPTION OF HAZARD Damp and mould (1) Dwelling: Pre 1920 semi- detached house Front elevation There are two bedrooms in this house, in one there is a damp patch adjacent to the window as the result of perished pointing and cracking to the reveal fillet. On the ground floor there is rising dampness in the ground floor rear living room, in the bay wall, there is no DPC in the dwelling, and the rainwater pipe from the bay roof discharges directly into the ground

© Warwick University 2005 Living room wall (end wall of building) Living room wall DESCRIPTION OF HAZARD Damp and mould (1) & Excess Cold (2) Dwelling: Fifth floor two- bedroom flat in an eight storey block of flats constructed in the 1970s Front elevation The flat is heated only by gas fired ducted warm air, with one outlet in the living room and another two in the hallway. There is a balcony area at each end of the living room, the single-glazed windows overlooking the balconies (east and west facing elevations) have been fitted with spinner vents. The end (north facing) wall of the sole living room is badly affected by mould. There is no heating in either bedroom but they appear to be unaffected by mould or dampness.

© Warwick University 2005 Ill-fitting PVCu replacement casement window in bedroom 1 Boiler in kitchen DESCRIPTION OF HAZARD Dwelling: Third floor two- bedroom flat in a five storey block of flats constructed pre-1920 Front elevation The has been partly renovated, the replacement PVCu windows are generally in poor repair (in the main living room the hinge to the top hung casement is broken) and although fitted with trickle vents, these are mostly blocked with dirt or the covers are fixed shut as the opening levers are broken. Although there is central heating, the boiler has been condemned as unsafe, and there is an old open-flued gas fire in the main living. Carbon monoxide (6.1) Gas fire installed in bedroom 1

© Warwick University 2005 DESCRIPTION OF HAZARD Dwelling: 1930’s constructed detached one bedroom bungalow with single skin brick walls Food Safety (16) Front elevation Kitchen wall Kitchen The walls & floor are affected by dampness and in disrepair. There are no facilities for the storage of food; there is space for a refrigerator but the electrical wiring is also in poor condition; there are no fixed work surfaces; the electrical hot water heater is also in disrepair and there is no hot water; the surface of the sink is pitted and worn, and the draining board is damaged. There is an electric cooker. The only electric sockets in the kitchen are one which is part of the unit to which the cooker is connected and another adjacent to that unit