74 SAFETY & SECURITY; STRUCTURAL ELEMENTS
Short term lettings should follow a Grade D1 LD1 alarm system for optimal detection, all areas except the bathrooms and WC.
Existing Houses of Multiple Occupancy (HMO) (one or two storey) should have a Grade D1 LD2 system installed. A heat detector should be installed in every kitchen, with a smoke alarm in the principal habitable room. Where more than one room may be used as the principal habitable room, a smoke detector should be installed in each of these rooms.
In a new build owner occupied a two or three storey house, British Standards suggest a Grade D2 Category LD2 system. As with the case of HMOs, a heat detector should be installed in every kitchen, with a smoke alarm in the principal habitable room. Where more than one room may be used as the principal habitable room, a smoke detector should be installed in each of these rooms.
ALARM INTERLINKING
Interlinking the alarms in a system is effective in the sounding of the system if an activation was to take place. When all alarms in a system are interlinked, all alarms will sound when one alarm is triggered, meaning the residents will hear the nearest alarm to them and be able
Builders threshold solution
The Type LTT Level Threshold Tray encapsulates threshold masonry exposed to damp transmittance from the exterior inwardly and from ground level upwardly. Separation ensures compliance. Each LTT extends downwardly over both faces of the masonry, and at either end rises and wraps around the reveal faces – including into the cavity. Flooring, insulation, membranes and DPC’s are able to converge with both skins that are isolated at the point of convergence.
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distance from any bedroom door, away from the bathroom door, within 7.5 metres of the area to be protected, and at least 300 mm from walls, light fi ttings or obstructions.
Stairways should have an alarm centrally on the ceiling in the ground fl oor hallway, and an alarm centrally on the ceiling, on all subsequent fl oors. Alarms should not be sited on the wall or any sloped ceilings.
IT’S VITAL TO HAVE THE CORRECT SENSOR TYPES IN THE CORRECT ROOMS AROUND THE PROPERTY
to react to the activation as soon as it happens, no matter where they are in the property. This can be achieved through wiring or wireless radio frequency connection depending on the alarm chosen.
ALARM SITING
Fire alarms need to be installed in the correct locations for the quickest response. In hallways and landings, an alarm should be located less than 3 metres
Kitchens should have the heat alarm sited centrally and on the ceiling, covering a 5.3 metre radius, and 300 mm from walls, light fi ttings or obstructions. Devices should not be sited directly above any cookers or hobs. We are siting alarms at least 1 metre from cooking appliances or basins to avoid nuisance alarms. In other rooms such as the living room or dining room, smoke alarms should be sited centrally on the ceiling, 300 mm from walls, light fi ttings or obstructions, and less than 7.5 metres from the edge of the coverage area.
It is vital to have the correct sensor types located in the correct rooms around the property. Not doing so can result in increased false activations and potentially less coverage.
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Triton Systems used in underpinning old Kent water mill 14/02/2024 08:28
One of Triton Systems most experienced installers has employed a package of its waterproofing products, while carrying technically challenging improvements to the basement and substructure of a 19th century watermill in Kent. Archer Specialist Treatments was called in by the South African based owner of the scenic residential property near Ashford, owing to it suffering continuing problems of water ingress as the floor level lies nearly two metres below the surface of the old mill pond. Paul Halliwell a Chartered Builder and Director of Archer Specialist Treatments, recounted: “In the two decades or more we’ve been using Triton, we have come to depend on the product range’s quality and reliability for all types of residential projects in different ground conditions. On a regular basis we employ their cavity drain systems – the TM3, CM8 and CM20 – the injection chemicals for damp-proofing and the TT55 cementitious waterproofing additive as well as the fungal and dry rot chemicals. It is a very good relationship we have with the company.” Triton Systems offers a wide range of well proven products to cover damp- proofing problems, timber protection, structural repairs, condensation control and the penetration of gases such as radon and methane.
info@tritonsystems.co.uk www.tritonsystems.co.uk WWW.HBDONLINE.CO.UK HBD02_Triton_Structural Elements - Waterproofing -
Basements_DPR.indd 1 08/02/2024 11:34
Phoebe Beddows is marketing executive for Aico
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