BS EN 1995-1-2:2004

This standard BS EN 1995-1-2:2004 Eurocode 5. Design of timber structures is classified in these ICS categories:

• 13.220.50 Fire-resistance of building materials and elements
• 91.080.20 Timber structures
• 91.010.30 Technical aspects

1.1.1 Scope of Eurocode 5

1. P Eurocode 5 applies to the design of buildings and civil engineering works in timber (solidtimber, sawn, planed or in pole form, glued laminated timber or wood-based structural products,e.g. LVL) or wood-based panels jointed together with adhesives or mechanical fasteners. It complies with the principles and requirements for the safety and serviceability of structures and the basis of design and verification given in EN 1990:2002.

2. P Eurocode 5 is only concerned with requirements for mechanical resistance, serviceability, durability and fire resistance of timber structures. Other requirements, e.g concerning thermal or sound insulation, are not considered.

3. Eurocode 5 is intended to be used in conjunction with:

   EN 1990:2002 Eurocode - Basis of structural design”

   EN 1991 “Actions on structures”

   EN´s for construction products relevant to timber structures

   EN 1998 “Design of structures for earthquake resistance”, when timber structures are built in seismic regions.

4. Eurocode 5 is subdivided into various parts:

   EN 1995-1 General

   EN 1995-2 Bridges

5. EN 1995-1 “General” comprises:

   EN 1995-1-1 General – Common rules and rules for buildings

   EN 1995-1-2 General – Structural Fire Design

6. EN 1995-2 refers to the General rules in EN 1995-1-1. The clauses in EN 1995-2 supplement the clauses in EN 1995-1.

1.1.2 Scope of EN 1995-1-2

1. P EN 1995-1-2 deals with the design of timber structures for the accidental situation of fire exposure and is intended to be used in conjunction with EN 1995-1-1 and EN 1991-1-2:2002. EN 1995-1-2 only identifies differences from, or supplements normal temperature design.

2. P EN 1995-1-2 deals only with passive methods of fire protection. Active methods are not covered.

3. P EN 1995-1-2 applies to building structures that are required to fulfil certain functions when exposed to fire, in terms of

   • avoiding premature collapse of the structure (load-bearing function)

   • limiting fire spread (flames, hot gases, excessive heat) beyond designated areas (separating function).

4. P EN 1995-1-2 gives principles and application rules for designing structures for specified requirements in respect of the aforementioned functions and levels of performance.

5. P EN 1995-1-2 applies to structures or parts of structures that are within the scope of EN 1995-1-1 and are designed accordingly.

6. P The methods given in EN 1995-1-2 are applicable to all products covered by product standards made reference to in this Part.