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BS 5588 5 1991 fire precautions in the design and construction of buildings firefighting BS 5588 5 1991 fire precautions in the design and construction of buildings firefighting BS 5588 5 1991 fire precautions in the design and construction of buildings firefighting BS 5588 5 1991 fire precautions in the design and construction of buildings firefighting BS 5588 5 1991 fire precautions in the design and construction of buildings firefighting
[...]... protected against splashing water; © BSI 05- 1999 21 Licensed copy:RMJM, 29/08/20 05, Uncontrolled Copy, © BSI BS 55 88- 5: 1991 Figure 6 — Water protection for firefighting lifts 22 © BSI 05- 1999 BS 55 88- 5: 1991 It is essential that a fire in the firefighting lift machine room does not lead to the firefighting shaft becoming smoke-logged, and that the risk of the operation of the firefighting lift machine being... Copy, © BSI BS 55 88- 5: 1991 Figure 3 — Banks of lifts that incorporate a firefighting lift © BSI 05- 1999 11 BS 55 88- 5: 1991 All access between the firefighting stair and firefighting lift and the accommodation needs to be solely via the firefighting lobby Where it is impractical to locate all adjacent lifts within the firefighting shaft a dual-entry firefighting lift may be provided with a separate firefighting. .. a firefighting shaft contains a firefighting lift, the firefighting stair in that shaft should serve every storey served by the firefighting lift f) The stair from a firefighting shaft may be extended into a part of the building not requiring a firefighting shaft provided that either: 1) the firefighting shaft is extended accordingly, including the provision of firefighting lobbies and any fire main;... the stair and the accommodation A firefighting lift opening into the firefighting lobby may need to be provided in certain buildings The function of the firefighting lift is to transport firefighting personnel and equipment to save time and effort The firefighting stair is for communication over short distances and as a line of retreat should the firefighting lift fail, and the firefighting lobby gives... within the firefighting shaft, not directly below the lift well, and should be either: 1) separated from the firefighting stair, firefighting lift lobby and firefighting lift well by fire- resisting construction in accordance with 9.2 and 9.3.2, and accessible only by way of the firefighting lift lobby at that level; or 2) located above the firefighting lift well and accessible by way of the firefighting. .. Copy, © BSI BS 55 88- 5: 1991 Figure 1a — Firefighting lift within escape stair [see 4.2.2 g)] 4.4 Layout of firefighting shafts 4.4.1 Commentary It is essential that firefighting personnel, having left the firefighting lift to enter the firefighting lobby, can enter the firefighting stair enclosure in case of need without having to traverse an area of risk within any storey of the building Therefore it... stairs in them The minimum extent of firefighting lifts and stairs is shown in Figure 1 6 In tall buildings and buildings with deep basements the firefighting shaft ought to contain a firefighting lift Fire service personnel may need to check several storeys when they arrive to assess the situation, and the firefighting lift ought to serve all the storeys they might need to reach Because the firefighting. . .BS 55 88- 5: 1991 2) the depth (see 2 .5) of the surface of the floor of the lowermost storey exceeds 10 m; should be provided with firefighting shafts each containing: i) a firefighting stair; ii) firefighting lobbies provided with a fire main; iii) a firefighting lift installation Licensed copy:RMJM, 29/08/20 05, Uncontrolled Copy, © BSI NOTE 1 The reference to parts of buildings covers situations... than 30 min NOTE 1 In the early stages of fire it is unlikely that the door between the firefighting lobby and the accommodation would be directly attacked by fire, although the wall separating the firefighting shaft and the accommodation might well be The main function of the door at this point is to ensure that the firefighting lobby remains relatively smoke free During firefighting operations the door... travel in not more than 1.0 min d) An emergency trap door complying with 8.12 of BS 56 55- 1:1986 or 8.12 of BS 56 55- 2:1988 should be provided Access to the inside of the car through the trap door should not be obstructed other than by easily breakable or removable lighting diffusers © BSI 05- 1999 BS 55 88- 5: 1991 e) In buildings provided with more than one lift, firefighting lift cars should be clearly and . product of a study of all aspects of the use of lifts during fires in buildings, including the history of failures of lifts and of casualties arising from their ill-considered use, and also of existing. building, this is not always necessary. The following considerations affect the extent of firefighting shafts and of the firefighting lifts and stairs in them. The minimum extent of firefighting. for increasing the fire load. However, in the case of refurbished buildings where design constraints make the provision of a firefighting lift in the firefighting lobby impracticable then