classes of premises. An extract from the table is shown below.


“Tose undertaking fire safety work should ensure that their knowledge is adequate”


Building regulations The changes in grades specified in BS 5839-6:2019 must also be considered when installing new systems where a building warrant applies. In Scotland, compliance with Building (Scotland) Regulations is required for installations in new buildings and conversions. Scottish Building Standards Division guidance to achieve compliance is given in the domestic and non-domestic technical handbooks. In a dwelling, the domestic technical handbook requires a Grade D system comprising at least one smoke alarm installed in the principal habitable room, at least one smoke alarm in every circulation space (such as hallways and landings) on each storey, at least one smoke alarm in every access room serving an inner room and at least one heat alarm installed in every kitchen. The locations described requiring


protection by a smoke/heat alarm are similar to a Category LD2 system as specified in BS 5839-6:2019. However, when providing a Grade D system, the designer will now have to consider the new sub-grades and the likely use of the premises – if it’s a rented property then a mains-powered alarm with tamper-proof


FIND OUT MORE


Fire safety standards can be obtained via the British Standards Institute (BSI) website at www.bsigroup.com/en-GB/ For building warrant work in Scotland,


the relevant BSD technical handbooks are at www.gov.scot/publications/ building-standards-2017-domestic/ and www.gov.scot/publications/building- standards-2017-non-domestic/ Tose involved specifically with


housing in Scotland can access Scottish Government guidance on the Housing (Scotland) Act 1987 (Tolerable Standard) (Extension of Criteria) Order 2019 and the Housing (Scotland) Act 2006 (Modification of the Repairing Standard) Regulations 2019 at www.gov.scot/ publications/fire-and-smoke-alarms- tolerable-standard-guidance/ and www.gov.scot/publications/fire-safety- guidance-private-rented-properties/


battery back-up will be required. Where a building warrant is applicable,


the installation of solely battery-powered alarms does not satisfy the guidance for compliance with Building (Scotland) Regulations. This type of supply is


Continued on page 24 >>>


Table 1– Minimum grade and category of fire detection and dire alarm system for protection of life in typical premises Class of premises


Single-family dwellings and shared houses with no floor greater than 200m2 Owner-occupied bungalow,flat or other single-storey unit Rented bungalow, flat or other single-storey unit


Owner-occupied maisonette with no floor above 4.5m from ground level or owner-occupied two-storey house


Rented maisonette with no floor above 4.5m from ground level or rented two-storey house


Rented maisonette with any floor above 4.5m from ground level and with alternative means of escape


Any maisonette with any floor above 4.5m from ground level and no alternative means of escape


Owner-occupied three-storey house Rented three-storey house


Owner-occupied four (or more) storey house Rented four (or more) storey house


D2 D1 D2


D1 D1 D1


D2 D1 A A


New or materially altered premises Grade in area


Category


LD2 LD2 LD2


LD2 LD2 LD1


LD2 LD2 LD2 LD1


F2 D1 F2


D1 D1 D1


F2 D1 D2 D1


Grade


LD3 LD2 LD3


LD2 LD2 LD1


LD2 LD2 LD2 LD1


CABLEtalk AUGUST/SEPTEMBER 2019 23


Minimum grade and category of system for installation in: Existing premises


Category


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