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标准 | EN 1995-1-1:2025 Eurocode 5 - Design of timber structures - Part 1-1: General rules and rules for buildings

点击次数：次 日期：2026-08-05

EN 1995-1-1:2025 Eurocode 5 - Design of timber structures - Part 1-1: General rules and rules for buildings


General Information

Abstract

  • 1.1   Scope of prEN 1995-1-1
    (1) prEN 1995-1-1 gives general design rules for timber structures.
    (2) prEN 1995-1-1 also gives specific design rules for buildings and timber civil engineering works.
    1.2   Assumptions
    (1) The assumptions of EN 1990 apply to this document.
    (2) prEN 1995-1-1 is intended to be used in conjunction with EN 1990, EN 1991 (all parts), EN 1998 (all parts) when timber structures are built in seismic regions.

  • Status

  • Published

  • Publication Date

  • 19-Nov-2025

    Key Topics

    • Scope & assumptions - General design rules for timber structures and integration with other Eurocodes for seismic regions.

    • Basis of design - Principles of limit state design, basic variables and stiffness values for structural analysis.

    • Materials - Requirements and design guidance for SL (strength graded timber), GST, GL, CLT, LVL, adhesives and softboards.

    • Durability - Measures against biological attack, moisture effects and corrosion protection for fasteners.

    • Structural analysis - Modelling, imperfections, second-order effects and simplified methods for stability assessment.

    • Ultimate and serviceability limit states (ULS & SLS) - Member resistance, stability, deformations, vibrations and compressive deformations perpendicular to grain.

    • Connections - Design of dowel-type fasteners, shear connectors, punched metal plate fasteners, bonded-in rods, carpentry connections and spacing/end distance rules.

    • Special elements - Design of diaphragms, built‑up and mechanically jointed members, thin-webbed/flanged beams and timber foundation piles.

    • Fatigue & robustness - Fatigue verification methods and informative annexes offering guidance on robustness, buckling, non-linear methods and additional provisions for CLT.

    Applications

    This Eurocode is essential for:

    • Structural engineers designing timber buildings and timber bridges or civil engineering elements.

    • Architects and contractors specifying timber systems (CLT, GL, LVL) and connections.

    • Manufacturers and fabricators of engineered timber products requiring compliance guidance.

    • Building control bodies and consultants assessing safety, serviceability and durability of timber designs.

    Practical uses include component sizing, connection design, global structural analysis, bracing and stability checks, vibration and deflection control, and detailing for durability and fire resistance in combination with national annexes.

    Related Standards

    • EN 1990 - Basis of structural design

    • EN 1991 (all parts) - Actions on structures

    • EN 1998 (all parts) - Seismic design

    • National Annexes to Eurocode 5 for country-specific parameters and partial factors

    Keywords: Eurocode 5, EN 1995-1-1, design of timber structures, timber design Eurocode, CLT, glued laminated timber, timber connections, structural timber standards.


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