BS 5950-8 PDF

Both BS Part 8[1] and Eurocodes are available for the design of structural steel in fire in the UK. The Eurocodes suite consists of: BS EN [2], BS. Reference is also made to British Steel publication “Design Examples to BS : Part 1: (2nd Edition) on which this example is based. Table numbering. Buy BS Structural use of steelwork in building. Code of practice for fire resistant design from SAI Global.

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Information regarding online access to British Standards via British Standards 59550-8 can be found at http: For light steel gs such as purlins and rails, replacement rather than reinstatement is usually the most economic 9550-8. Ceilings should be constructed in accordance with BS The variation of specific heat with temperature is shown in Figure 2. Summary of pages This document comprises a front cover, an inside front cover, pages ii to iv, pages 1 to 37 and a back cover.

It is incorporated by Royal Charter. Effects of temperature profile on limiting temperatures. British Constructional Steelwork Association Ltd. For each type of member, recommendations are given for the load carrying capacity and, where appropriate insulation performance, for a given fire exposure assuming they act in isolation and restraint to thermal expansion is ignored.

Limiting temperatures for the design 59508- protected and unprotected hot finished members Description of member 0. This new edition has been prepared following the developments in fire engineering and the issue of a number of new and related standards adopting European and international standards for materials. Methods of assessment are beyond the scope of this document and specialist literature should be consulted. Variation of specific heat with temperature for steel Figure 3?


Code de bonne practique Title in German Stahlbau. Any weld below the angle should be ignored. Where the limiting temperature, as given in Table 8 for the applicable load ratio, is not less than the design temperature bbs by 8.

When the applied moment Mf at the fire limit state exceeds Mcf, the protection thickness necessary to provide adequate load carrying capacity may be derived either from 8.

Design using structural fire standards –

Fire protection for structural steel in buildings 3rd edition? These recommendations are based on: Thus the temperatures of blocks 4, 5 and 6 should be calculated using: Code of practice for design? This is a mechanism of calculating the actual time-temperature relationship in a compartment of known dimensions and occupancy and removes historic dependence on the standard fire test. This part of BS is principally concerned with items c and d.

The moment capacity Mcf for a composite beam can be determined from: Temperature distribution through a composite floor with profiled steel sheeting Depth into slaba mm C Temperature distribution for a fire resistance period of: Contact the Information Centre. BSSteel, concrete and composite bridges? The deflection may be ignored. The reinstatement of fire damaged steel and iron framed structures.

Guidance on this is available by clicking here. In checking the strength and stability of the structure at the fire limit state, the loads should be multiplied by the relevant load factor f given in Table 5.


The effect of the slab is both to protect the upper surface of the top flange from the fire and to act as a heat sink. The decrease in strength of hot rolled structural steel with temperature.

Measurement of depth into concrete slab? The copyright notice displayed in this document indicates when the document was last issued.

BS 5950-8:2003

BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Properties at ambient temperature are given in BS The Stationery Office, December As the temperature rises further, more load is transferred from the hot region by plastic yielding until eventually the load in the cool regions becomes so high that they too become plastic and the member fails. Structural steels, Buildings, Steels, Structural systems, Structures, Framed structures, Structural design, Safety engineering, Fire safety, Fire resistance, Fire safety in buildings, Structural fire protection, Temperature, Design calculations, Plastic analysis, Construction materials, Structural members.

The variation of thermal elongation with temperature is shown in Figure b. A commentary to the version of the standard, giving more detailed information and worked examples, is provided in SCI P