BS EN 15644:2008

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General principles
   4.1 Classification
        4.1.1 General
        4.1.2 Climatic conditions (location)
        4.1.3 Traffic frequency
        4.1.4 Comfort
   4.2 Performance characteristic required
        4.2.1 General
        4.2.2 Mechanical resistance and stability
        4.2.3 Safety in case of fire
        4.2.4 Hygiene, health and environment (dangerous
              substances)
   4.3 Geometry of stairs and safety in use
        4.3.1 Geometry of stairs including landings
        4.3.2 Slipperiness
        4.3.3 Safety equipment
        4.3.4 Safe breakage
        4.3.5 Impact resistance
   4.4 Protection against noise
   4.5 Energy economy
   4.6 Aspects of durability, serviceability and identification
        4.6.1 General
        4.6.2 Resistance to deterioration caused by climatic
              conditions
        4.6.3 Resistance to deterioration caused by chemical
              agents
        4.6.4 Resistance to deterioration caused by biological
              agents
        4.6.5 Finishes
5 Methods of verification and assessments
   5.1 Performance characteristics and verification methods
        5.1.1 General
        5.1.2 Mechanical resistance and stability
        5.1.3 Design provisions for earthquake resistance
        5.1.4 Load/displacement behaviour and vibrations
        5.1.5 Resistance of fixings
   5.2 Safety in case of fire
        5.2.1 Resistance to fire
        5.2.2 Reaction to fire
   5.3 Safety in use
        5.3.1 Geometry on the stair including landings
        5.3.2 Slipperiness
        5.3.3 Safety equipment
        5.3.4 Safe breakage
        5.3.5 Impact resistance
   5.4 Protection against noise
   5.5 Thermal performance
   5.6 Aspect of durability, serviceability and identification
        5.6.1 General
        5.6.2 Resistance to deterioration caused by climatic
              conditions
        5.6.3 Resistance to deterioration caused by chemical
              agents
        5.6.4 Resistance to deterioration caused by biological
              agents
        5.6.5 Finishes
6 Application to prefabricated stairs made of solid wood
   6.1 Intended use
        6.1.1 General
        6.1.2 Intended use: heated space
        6.1.3 Intended use: unheated space (humid conditions)
        6.1.4 External conditions non exposed or exposed
   6.2 Materials
7 Solid wood prefabricated stair characteristics
   7.1 General
   7.2 Solid wood products
   7.3 Other materials
   7.4 Safety in case of fire
        7.4.1 Resistance to fire
        7.4.2 Reaction to fire
   7.5 Dangerous substances
        7.5.1 Formaldehyde release (expressed in term of classes)
        7.5.2 Content of pentachlorophenol (expressed in term
              of values)
   7.6 Safety in use
        7.6.1 Impact resistance
        7.6.2 Slipperiness
        7.6.3 Load bearing capacity of stairs
        7.6.4 Stability and stiffness
        7.6.5 Resistance to fixing
   7.7 Acoustic performance
   7.8 Biological durability
        7.8.1 General
        7.8.2 Natural durability
        7.8.3 Wood treated against biological attack
        7.8.4 Biological durability level (expressed in term
              of use classes)
   7.9 Surface resistance
        7.9.1 Finishes and wear resistance
        7.9.2 Hardness
        7.9.3 Resistance to chemical agents
   7.10 Safety equipment
   7.11 Safe breakage
   7.12 Impact resistance
   7.13 Behaviour of stair in various/changing indoor and
        outdoor climates
   7.14 Dimensions
   7.15 Classification and decorative appearance of elements
   7.16 Dimensioning of risers and treads and the slope of the
        stair
   7.17 Finishing
8 Factory production control
   8.1 General
   8.2 Equipment
   8.3 Raw material and components
   8.4 Production process
   8.5 Product testing and evaluation
   8.6 Non-conforming products
9 Labelling
10 Handling, installation, maintenance and care
Annex A (informative) - Dimensional and performance
        characteristics of balustrades, handrails and
        flights of stairs in connection with the classification
        given in 4.1
   A.1 Handrails and/or balustrades
        A.1.1 Minimum lowest height of handrails and/or
              balustrades corresponding to the classification
              given in 4.1
        A.1.2 Grip of handrail
   A.2 Mechanical performance characteristics
   A.3 Sequence of tests
Annex B (informative) - General considerations regarding biological
        durability
   B.1 General precautions (extract from EN 335-2:2006, Annex 3)
   B.2 Natural or conferred durability of sound wood
        (extract from EN 335-2:2006, Annex 4)
Annex C (normative) - Formaldehyde classes
   C.1 Product to be tested
   C.2 Materials to be tested
Annex D (informative) - Remind of classes of reaction to fire
        performance for construction products for flooring including
        their surface coverings (OJEC 150/18 - 23.2.2000)
        (Extract from EN 13501-1:2007)
Annex E (informative) - Examples of traditional and non traditional
        timber stairs
   E.1 Examples of traditional timber stairs
   E.2 Examples of non traditional timber stairs
Bibliography

Provides specifications and requirements for prefabricated stairs made of solid wood, i.e. where the components contributing to the fulfilment of mechanical resistance and stability characteristics are made of solid wood.

This European Standard gives specifications and requirements for prefabricated stairs made of solid wood, i.e. where the components contributing to the fulfilment of mechanical resistance and stability characteristics are made of solid wood. These stairs are traditionally designed.

NOTE1 If the filling of the guarding does not contribute to the mechanical stability and resistance, the used material is not relevant.

NOTE 2 Examples of traditionally made/designed stairs are given in Annex E.

This European Standard covers: stairs either pre-assembled, partly pre-assembled or in component form including balustrades and handrails for internal or external use.

This European Standard does not consider the contribution of these elements to the overall structure design. The ability of a stair to contribute to the overall stability of the works or to the strength of the structure is not covered by this standard.

Carpets on stairs are not covered by this Standard.

The surfaces of the wooden elements may be exposed or covered by finishes.

Where stairs are supplied with a finish or covering, aesthetic or visual characteristics will not be covered by this Standard and references shall be made to the appropriate product standard (e.g. colour fastness of carpet finishes).