FprEN 1995-1-1

SLOVENSKI STANDARD
01-december-2023
Nadomešča:
SIST EN 1995-1-1:2005
Evrokod 5: Projektiranje lesenih konstrukcij - 1-1. del: Splošna pravila in pravila za
stavbe
Eurocode 5 - Design of timber structures - Part 1-1: General rules and rules for buildings
Eurocode 5 - Bemessung und Konstruktion von Holzbauten - Teil 1-1: Allgemeine
Regeln und Regeln für den Hochbau
Eurocode 5 - Calcul des structures en bois - Part 1-1: Règles générales et règles pour
les bâtiments
Ta slovenski standard je istoveten z: prEN 1995-1-1
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.20 Lesene konstrukcije Timber structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
prEN 1995-1-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2023
ICS 91.010.30; 91.080.20 Will supersede EN 1995-1-1:2004
English Version
Eurocode 5 - Design of timber structures - Part 1-1:
General rules and rules for buildings
Eurocode 5 - Calcul des structures en bois - Part 1-1: Eurocode 5 - Bemessung und Konstruktion von
Règles générales et règles pour les bâtiments Holzbauten - Teil 1-1: Allgemeine Regeln und Regeln
für den Hochbau
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 250.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1995-1-1:2023 E
worldwide for CEN national Members.

prEN 1995-1-1:2023 (E)
Contents Page
1 Scope . 11
1.1 Scope of EN 1995-1-1 . 11
1.2 Assumptions . 11
2 Normative references. 11
3 Terms, definitions and symbols . 11
3.1 Symbols and abbreviations . 20
4 Basis of design . 53
4.1 General rules . 53
4.2 Principles of limit state design . 53
4.3 Basic variables . 54
4.4 Stiffness values for structural analysis . 58
4.5 Verification by the partial factor method . 60
5 Materials . 62
5.1 General . 62
5.2 Strength graded structural timber (SL) with rectangular cross-section and structural
finger jointed timber (FST) . 70
5.3 Glued solid timber (GST) . 71
5.4 Glued laminated timber (GL) . 71
5.5 Cross laminated timber (CLT) . 72
5.6 Laminated veneer lumber (LVL) . 72
5.7 Glued laminated veneer lumber (GLVL) . 73
5.8 Softboards (SB) . 73
5.9 Adhesives . 73
6 Durability . 74
6.1 General . 74
6.2 Measures to prevent a biological attack . 74
6.3 Resistance to corrosion . 78
7 Structural analysis . 82
7.1 General . 82
7.2 Structural modelling . 83
7.3 Imperfections . 87
7.4 Simplified method for the evaluation of effects of actions based on second order
theory . 92
8 Ultimate limit states . 95
8.1 Member resistance verification. 95
8.2 Stability of members: simplified verification . 111
8.3 Additional rules for members with special geometries . 116
8.4 System strength . 144
9 Serviceability limit states . 145
9.1 General . 145
9.2 Deformations . 145
9.3 Vibrations . 148
9.4 Compressive deformation perpendicular to grain . 158
10 Fatigue . 159
prEN 1995-1-1:2023 (E)
10.1 General . 159
10.2 Fatigue verification for equivalent constant amplitude fatigue loading . 159
10.3 Fatigue verification for variable amplitude fatigue loading . 161
11 Connections . 161
11.1 General . 161
11.2 Resistance of a single dowel-type fastener . 163
11.3 Connection design with dowel-type fasteners . 182
11.4 Spacings, edge distances and end distances . 195
11.5 Brittle failure modes of connections with dowel-type fasteners laterally loaded
parallel to grain . 204
11.6 Brittle failure of connections loaded perpendicular to grain . 213
11.7 Shear connectors . 217
11.8 Punched metal plate fasteners . 225
11.9 Expanded tube fasteners . 225
11.10 Bonded-in rods . 225
11.11 Carpentry connections . 234
12 Mechanically jointed and glued webbed or flanged beams . 243
12.1 Glued thin-webbed beams . 243
12.2 Glued thin-flanged beams. 245
12.3 Mechanically jointed beams . 246
12.4 Mechanically jointed and glued columns . 247
13 Diaphragms . 247
13.1 General . 247
13.2 Diaphragms built out of timber framed elements . 248
13.3 Framed walls . 255
13.4 Framed floors . 263
13.5 Framed roofs . 271
13.6 Diaphragms built out of CLT, LVL and GLVL . 272
14 Timber foundation piles . 274
Annex A (informative) Additional guidance for increasing the robustness of timber
structures . 275
A.1 Use of this annex .
...