London Fire Safety Guidance for Houses in ... - Harrow Council

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Clear width: minimum 600mm, preferred 800mm. Pitch: minimum 30 degrees, optimum 35 degrees, maximum 42degrees, from horizontal. Going (depth of tread front to back): optimum 250mm, minimum225mm, maximum 300mm. Rise (vertical distance between treads): optimum 175mm, minimum100mm, maximum 220mm. Treads to be flat and of non-slip material (or fitted with non-slip nosings25mm-50mm). Handrails required on both sides of stairs fixed 840mm – 1,000mmheight measured at right angles from the pitch line and fitted no widerthan the tread. Minimum headroom clearance: 1.5m measured at right angle from thepitch line. Balustrades: where fitted must not allow passage of a sphere 100mmdiameter to pass through or provide toe holds allowing a child to climb.For further details refer to BS 5395: Part 1: 1977 and Part 3: 1985.Spiral/Helical StairsThese are acceptable only in exceptional circumstances and subject to thefollowing conditions:• Where no more than 30 able-bodied persons would use them.• Maximum height 9m.• Minimum diameter 1.5m.• Design criteria to comply fully with BS 5395: Part 2: 1984.Spiral and helical stairs will rarely be encountered and will beprefabricated/factory made. The full details of the design criteria laid down inBS 5395: Part 2: 1984 “Code of practice for the design of helical and spiralstairs” are not therefore reproduced here. If this type of stair is underconsideration the reader should consult the British Standard.Walkways and PlatformsThese should have minimum requirements of:• Clear width: minimum 800mm.• Non-skid surface.• Adequate headroom: minimum 2.1m.• Guard rails on either side: height 1.1m with horizontal mid-rail.• Non-slip steppings for ease of access and egress and for parapetcrossings.• Securely fixed: not just by their own weight.• Incline: should preferably be horizontal, maximum allowable incline 10degrees.For greater detail refer to BS 5395: Part 3: 1985.London Fire Safety Guidance for Houses in Multiple OccupationVersion 2: 06/06
Unacceptable Means of EscapeThe current HMO Code of Practice does not permit the followingarrangements as secondary means of escape components.• Fixed vertical ladders.• Pull down/raking ladders• Lowering lines/ropes and other manipulative emergency devices.Maintenance of escape routesEscape routes should be kept free from obstructions and combustiblematerials at all times, and notices to this effect should be displayed in thoseparts of the escape routes which could present convenient storage areas, e.g.under stair open spaces. The need for proper maintenance cannot be toostrongly emphasised.London Fire Safety Guidance for Houses in Multiple OccupationVersion 2: 06/06
Page 1 and 2: London Fire Safety Guidance for Hou
Page 3 and 4: Two Storey HMOsRequirement Fire res
Page 5 and 6: Secondary meansof escapeNot require
Page 7 and 8: Three and Four Storey HMOsRequireme
Page 9 and 10: Secondary meansof escapeNot require
Page 11 and 12: Five Storey HMOsRequirement Fire re
Page 13 and 14: Extinguishersfire blankets&Secondar
Page 15 and 16: Five or Six Storey HMOs(Secondary e
Page 17 and 18: CupboardsstoresandWhere in staircas
Page 19 and 20: Fire Detection and Alarm SystemsINT
Page 21 and 22: impaired, standby supplies, manual
Page 23 and 24: Houses Converted to Self-Contained
Page 25 and 26: Bedsit -Type Houses in Multiple Occ
Page 27 and 28: Houses Where There Is A Mixture Of
Page 29 and 30: Mains wired smoke alarms with batte
Page 31 and 32: BRITISH STANDARDS RELATING TO FIRE
Page 33 and 34: DoorsTECHNICAL POINTS APPLICABLE TO
Page 35 and 36: FramesSize: Should not be less than
Page 37 and 38: identical to those in the door manu
Page 39 and 40: made for independent and protected
Page 41 and 42: Surface FinishesWALLS, PARTITIONS,
Page 43 and 44: Material/ProductA Brickwork, blockw
Page 45 and 46: Staircase LightingNormal staircase
Page 47 and 48: Secondary Means of EscapeINTRODUCTI
Page 49: Via RoofEscape may be via the roofs
Page 53 and 54: Recommended maximum travel distance
Page 55 and 56: Diagram 1 : Escape in more than one
Page 57 and 58: Initial dead endIn any situation wh
Page 59 and 60: from any point at which that angle
Page 61 and 62: Glossary of Fire Safety TermsAccess
Page 63: Suitably qualified person See Compe

London Fire Safety Guidance for Houses in ... - Harrow Council

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