Spiral Staircase Bs 5395

Travel Distance Fire Exit Offices

Spiral stairs to BS 5395 P42 'are a possibility for means of escape 3.25d and e fire resistance and guarding is needed for flat roof escape routes Escape over flat roofs - second escape only and then not for institutional buildings or for the public (and must be over a roof of the same building) 3.25 If stair goes on down it should be clear that the final exit is at this level 5.31 Basements in a single stair building this basement should have a separate stair. In a two-stair building one...

Core planning and standardized stairs

Northern Flight Dog Ladder

Lift and stair cores in commercial buildings can be grouped according to building use - hotels, offices, retail and special facilities (such as multi-purpose layouts that contain conference and exhibition space). Building Codes in Britain stipulate minimal tread-to-rise relationships that vary according to the 'use' category 1 these are dealt with in Chapter 10. A wise designer ought to take the most generous proportion in multi-use buildings so that a common denominator in stair risers is...

Case Study 125 State of Illinois Center Chicago 1985

State Illinois Center Chicago

The round atrium is fully glazed externally and penetrates the total height of the offices. A cluster of wall-climber lifts are the main focus within the inner space of the atrium and relate to circular galleries floor by floor. Accommodation and escape stairs run in a zig zag pattern down the balcony face and contribute an expression of activity and movement within the 16 storey volume. The lowermost floors relate to a food hall and to the subway system. It is one of the most remarkable public...