ENV 1090-4:1997

Execution of steel structures - Part 4: Supplementary rules for hollow section structures

This part of ENV 1090 gives supplementary provisions extending the application of ENV 1090-1 to cover requirements for execution of steel structures or components for steel structures that are: latticed and assembled into either uni-planar or multi-planar configurations; and composed partly or wholly of circular, square or rectangular hollow sections.

Ausführung von Tragwerken aus Stahl - Teil 4: Ergänzende Regeln für Fachwerkkonstruktionen mit Hohlquerschnitten

Exécution des structures en acier - Partie 4: Règles supplémentaires pour les structures à treillis en profils creux

Izdelava in montaža jeklenih konstrukcij - 4. del: Dodatna pravila za konstrukcije z votlimi profili

General Information

• Status: Withdrawn
• Publication Date: 16-Dec-1997
• Withdrawal Date: 22-Jul-2008
• ICS: 91.080.10 - Metal structures
• ICS: 91.080.13 - Steel structures
• Technical Committee: CEN/TC 135 - Execution of steel structures
• Drafting Committee: CEN/TC 135/WG 8 - Execution of hollow section lattice structures
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 23-Jul-2008
• Completion Date: 23-Jul-2008
• Ref Project: SIST ENV 1090-4:2001 - Execution of steel structures - Part 4: Supplementary rules for hollow section structures

Relations

• Replaced By: EN 1090-2:2008 - Execution of steel structures and aluminium structures - Part 2: Technical requirements for steel structures
• Effective Date: 22-Dec-2008

Standards Content (Sample)

S L O V E N S K I SIST ENV 1090-4
prva izdaja
PREDSTANDARD
julij 2001
Izdelava in montaža jeklenih konstrukcij – 4 del: Dopolnilna pravila za
konstrukcije z votlimi prerezi (prevzet ENV 1090-4:1997 z metodo platnice)
Execution of steel structures - Part 4: Supplementary rules for hollow section
structures
Exécution des structures en acier - Partie 4: Règles supplémentaires pour les
structures en profils creux
Ausführung von Tragwerken aus Stahl - Teil 4: Ergänzende Regeln für
Tragwerke aus Hohlquerschnitten
Deskriptorji: stavbe, jeklene konstrukcije, konstrukcijska jekla, votli profili, materiali, izdelava,
varjenje, stikovanje, geometrijska odstopanja, zaščita, pregledi
Referenčna številka
ICS 91.080.10 SIST ENV 1090-4:2001 ((sl),en)
Nadaljevanje na straneh od II do IV in od 1 do 25
© Standard je založil in izdal Urad Republike Slovenije za meroslovje. Razmnoževanje ali kopiranje celote ali delov tega standarda ni
dovoljeno.

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SIST ENV 1090-4 : 2001
NACIONALNI UVOD
Predstandard SIST ENV 1090-4 ((sl),en), Izdelava in montaža jeklenih konstrukcij - 4. del: Dopolnilna
pravila za konstrukcije z votlimi prerezi, prva izdaja, 2001, ima status slovenskega predstandarda in je
z metodo platnice prevzet evropski predstandard ENV 1090-4 (en), Execution of steel structures - Part
4: Supplementary rules for hollow section structures, December 1997.
NACIONALNI PREDGOVOR
Evropski predstandard ENV 1090-4:1997 je pripravil tehnični odbor Evropskega komiteja za
standardizacijo CEN/TC 135 Izdelava in montaža jeklenih konstrukcij.
Odločitev za prevzem tega predstandarda po metodi platnice je sprejela delovna skupina USM/TC
KON/WG 3 Jeklene konstrukcije, ki je pripravila tudi nacionalni dokument za uporabo v Sloveniji,
potrdil pa tehnični odbor USM/TC KON Konstrukcije.
Ta slovenski predstandard se lahko uporablja samo v skladu z nacionalnim dokumentom, ki je
sestavni del SIST ENV 1090-4:2001.
Ta slovenski predstandard je dne 2000-12-04 odobril direktor USM.
Rok veljavnosti tega predstandarda je do izdaje evropskega standarda EN 1090-4.
ZVEZE S STANDARDI
S prevzemom tega evropskega predstandarda veljajo naslednje zveze:
SIST ENV 1090-1:1999 ((sl),en) Izdelava in montaža jeklenih konstrukcij – 1. del: Splošna
pravila in pravila za stavbe
SIST ENV 1992-1-1:1999 ((sl),en) Eurocode 2: Projektiranje betonskih konstrukcij – Del 1-1:
Splošna pravila in pravila za stavbe
SIST ENV 1993-1-1:1996 ((sl),en) Eurocode 3: Projektiranje jeklenih konstrukcij -
Del 1-1: Splošna pravila in pravila za stavbe
SIST ENV 1994-1-1:1998 ((sl),en) Eurocode 4: Projektiranje sovprežnih konstrukcij – Del 1-1:
Splošna pravila in pravila za stavbe
OPOMBI
- Povsod, kjer se v besedilu predstandarda uporablja izraz “evropski predstandard”, v
SIST ENV 1090-4:2001 to pomeni “slovenski predstandard”.
- Nacionalni uvod in nacionalni predgovor nista sestavni del predstandarda.
II

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SIST ENV 1090-4 : 2001
VSEBINA Stran
Nacionalni dokument za uporabo v Sloveniji. IV
ENV 1090-4:1997 .1
III

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SIST ENV 1090-4 : 2001
Nacionalni dokument za uporabo v Sloveniji
Pri referenčnih standardih za vijake je potrebno upoštevati določila Nacionalnega dokumenta za
uporabo v Sloveniji za SIST ENV 1090-1:1999.
IV

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EUROPEAN PRESTANDARD ENV 1090-4
PRÉNORME EUROPÉENNE
EUROPÄISCHE VORNORM November 1997
UDC 624. 94. 014.2; 624.07; 693.81
Descriptors: buildings, steel construction, structural steels, materials, manufacturing, welding, fastening, tolerance, protection, inspection
English version
Execution of steel structures
Part 4: Supplementary rules for hollow section structures
Execution des structures en acier Ausführung von Tragwerken aus Stahl
Partie 4: Règles supplémentaires pour Teil 4: Ergänzende Regeln für Tragwerke
les structures en profils creux aus Hohlquerschnitten
This European Prestandard (ENV) was approved by CEN on 17 July 1997 as a prospective standard for provisional application.
The period of validity of this ENV is limited initially to three years. After two years the members of CEN will be requested to submit their
comments, particularly on the question whether the ENV can be converted into an European Standard.
CEN members are required to announce the existence of this ENV in the same way as for an EN and to make the ENV available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final
decision about the possible conversion of an ENV into an EN is reached.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CEN
European Committee for Standardization
Comité Européen de Normalisation
Europäisches Komitee für Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels

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Page 2
ENV 1090-4:1997
CONTENTS 2
This list of contents refer only subclauses where addition to or modification of
the corresponding subclauses of ENV 1090-1 are introduced.
FOREWORD 4
INTRODUCTION 4
1 SCOPE 4
2 NORMATIVE REFERENCES 5
3 DEFINITIONS 5
4 DOCUMENTATION 6
5 MATERIALS 6
6 FABRICATION 7
6.3Handling and storage 7
6.4Cutting 7
6.5Shaping 7
7 WELDING 8
7.2Welding plan 8
7.4Welding approval 9
7.5Preparation and execution of welding 9
8 MECHANICAL FASTENING 18
9 ERECTION 18
10 PROTECTIVE TREATMENT 19
10.1 General 19
11 GEOMETRICAL TOLERANCES 19
11.2 Fabrication tolerances 19
12 INSPECTION, TESTING AND CORRECTIONS 21
12.4 Welding 21

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Page 3
ENV 1090-4:1997
Annex A (normative) 22
PROCEDURE TESTS FOR PRELOADING BOLTS AND DETERMINATION OF
SLIP FACTOR 22
Annex B (normative) 22
RIVETING 22
Annex C (informative) 22
PROJECT SPECIFICATION 22
Annex D (informative) 22
CLASSIFICATION OF FABRICATED STEEL COMPONENTS AND SYSTEMS
FOR THE CONTROL OF CONFORMITY 22
Annex E (informative) 22
GUIDELINES FOR WELDING COORDINATION 22
Annex F (informative) 23
HEXAGON INJECTION BOLTS 23
Annex G (informative) 23
GUIDELINES FOR INSPECTION AND TEST PLAN 23
Annex H (informative) 23
GUIDELINES FOR WELD IMPERFECTION LIMITS 23
Annex J (informative) 23
BACKGROUND DOCUMENTS 23
J.1 CIDECT publications 23

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Page 4
ENV 1090-4:1997
FOREWORD
This European Prestandard has been drawn up by Technical Committee CEN/TC 135 "Execution of steel
structures", the secretariat of which is held by NSF.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to announce this European Prestandard: Austria, Belgium, Czech Republic, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
Sweden, Switzerland and United Kingdom.
INTRODUCTION
Addition:
(104) This European Prestandard ENV 1090-4 is a supplement to the ENV 1090-1: Execution of Steel structures
- General rules and rules for buildings.
(105) This European Prestandard presupposes that the work is performed in accordance
with the requirements of ENV 1090-1, as amended by this supplement.
(106) In this European Prestandard, the following terms are used thus:
Addition: means that the text applies in addition to the corresponding clause/subclause of ENV 1090-1 without
any amendment to the text of ENV 1090-1;
Modification:means that the text shall modify the corresponding text of ENV 1090-1 as appropriate.
(107) An addition is identified by the subsequent number to the last subclause respective paragraph number of
ENV 1090-1 added to 100.
(108) Where a subclause of ENV 1090-1 is not mentioned in this ENV 1090-3, it applies as far as deemed
appropriate in each case.
1 SCOPE
This clause of ENV 1090-1 is applicable except as follows:
Addition:
(106) This part of ENV 1090 gives supplementary provisions extending the application of ENV 1090-1 to cover
requirements for execution of steel structures or components for steel structures that are:
- latticed and assembled into either uni-planar or multi-planar configurations;
and
- composed partly or wholly of circular, square or rectangular hollow sections.
Note 1: The terms hollow section or hollow section component are intended to include all types of hollow
components, not only those produced as a standard range of rolled steel shapes but also custom-made
fabricated shapes.
Note 2: The requirements of this part of ENV 1090 are only applicable to structures not susceptible to
fatigue.
(107) With respect to execution of joints and connections in hollow section lattice girders, this part of ENV 1090
is intended to be consistent with the requirements for design given in
Annex K of ENV 1993-1-1.
Note: The scope of this part of ENV 1090 includes welded and bolted lattice structures, although this part
of ENV 1090 and Annex K of ENV 1993-1-1 concentrate on requirements for welded lattice structures.
Annex J lists some informative references.

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Page 5
ENV 1090-4:1997
2 NORMATIVE REFERENCES
This clause of ENV 1090-1 is applicable.
3 DEFINITIONS
This clause of ENV 1090-1 is applicable except as follows:
Addition:
3.118: component: A separate part produced during fabrication, which may itself be an assembly of
several smaller components, see also note 1.
3.119: connection: Location at which two components are interconnected. See also note 2 and note 3.
3.120: gap: The distance, measured along the length of the connecting face of the chord,
between the toes of the adjacent brace components. See also note 2.
3.121: joint: A nodal zone within which two or more components are connected. See also
note 3.
3.122: member: A designation used for structural design purpose, usually stating the function of a
component.
3.123: multi-planar joint: A joint of components in more than a single plane. See also note 1.
3.124: overlap: The intersecting distance, measured along the length of the connecting face of
the chord, between the toes of the adjacent brace components. See also note 2.
3.125: structure: Organized combination of connected components designed to provide some
measure of rigidity; hence a self-stable framework on site. The term refers to load
carrying components. See also note 2.
3.126: uni-planar joint: A joint of components in a single plane. See also note 2.
Note 1: In Annex K of ENV 1993-1-1, the term member is used for individual components or assemblies
of components that are designed to serve a particular purpose. The constructor may not know the design
purpose of components.
Note 2: The terms 3.119, 3.120, 3.123, 3.124, 3.125, 3.126 are generally in accordance with the definitions
given in ENV 1993-1-1 and its Annex K, with component used instead of member.
Note 3: The terms connection and joint are sometimes used synonymously but a distinction is made in this
European Prestandard. Annex K of ENV 1993-1-1 uses connection in its title, but refers to joints in the text
and seems to imply that a joint is a number of connections at or around the same node, where each
connection is between just two members. Annex J of ENV 1993-1-1 defines the terms and uses them
more precisely. Examples of in-line, branch, and mitre joints are given in figures 1, 5 and 6 respectively.

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Page 6
ENV 1090-4:1997
Figure 1: Illustration of defined terms
The symbols used on figure 1 means:
A = Structure
B = Component assembled from several smaller components
C = Chord component
D = Bracing component
E = Site bolted connection
F = Site welded connection
G = Joint
4 DOCUMENTATION
This clause of ENV 1090-1 is applicable.
5 MATERIALS
This clause of ENV 1090-1 is applicable.

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Page 7
ENV 1090-4:1997
6 FABRICATION
This clause of ENV 1090-1 is applicable except as follows:
6.3 Handling and storage
Addition:
(103) Damage resulting in local dents in the surface of hollow sections shall be assessed in accordance with
figure 2. If the gap exceeds the permitted deviation, repairs may be executed by means of fully welding on local
cover plates of the same thickness as the original material.
Note: Such repairs are not uncommon, because many hollow sections have relatively thin walls. This
procedure should be used in preference to any hot-shaping procedure in accordance with 6.5 of ENV
1090-1.
Characteristic cross-sectional dimension of section is d
Straight edge of length ≥ 2d
Gap ∆ ≤ the larger of d/100 or 2 mm
Figure 2: Permitted deviation for surface profile of a dented component
6.4 Cutting
Addition:
(106) Circular hollow sections being used as branch components in fillet welded joints may be cut in straight
segments to prepare them for interconnection at saddle joints provided that the fit-up of the joint geometry suits
the requirements of the welding procedure specification.
6.5 Shaping
Modification:
(3) Bending of components by cold forming may be used provided that properties of the as-bent material and
geometry are checked for consistency with the requirements of the project specification. Bending by cold forming
may cause alteration of section properties (eg. concavity, ovality and wall thinning) and increased hardness.
Note: Some background guidance is available as given in Annex J.

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Page 8
ENV 1090-4:1997
7 WELDING
This clause of ENV 1090-1 is applicable except as follows:
7.2 Welding plan
Addition to (2) d)
(103) The welding plan shall identify the acceptable locations of stop/start positions. Intermediate stop/start
positions will be necessary where joint geometry is such that welding cannot be executed continuously.
Note: The following guidance may be used for in-line joints:
- stop/start positions of single pass welds should be chosen to avoid these positions coming under the
location of a subsequent weld;
- stop/start positions should not be located at or close to the corner positions of a square or rectangular
hollow section in accordance with figure 3.
The following guidance may be used for other joints:
- stop/start positions should not be located at or close to the toe position or lateral flank positions of
a saddle weld joint between two circular hollow sections in accordance with figure 3;
- stop/start positions should not be located at or close to the corner positions of a joint between a
square or rectangular hollow section bracing and a hollow chord component;
- welding between hollow sections should be completed all round as a seal weld, even if this total
length of weld is not required for strength reasons.
Figure 3: Recommended welding sequence for rectangular,
square and circular hollow section joints
Modification:
(2) e) For welded joints in hollow section lattice structures, the requirements of 7.2 of ENV 1090-1 with respect
to turning of components during the welding process, shall be related to the recommended sequence of welding
given in 7.2.
Note: The term member used in ENV 1090-1 may in some cases be interpreted as component.
Addition to (2):
(104) j) The location of butt welds in hollow sections to accommodate available mill lengths shall be checked for
consistency with the project specification.

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Page 9
ENV 1090-4:1997
7.4 Welding approval
7.4.1 Welding procedures
Modification:
(2) If non-destructive testing of completed welded joints in accordance with 12.4 of ENV 1090-1 is not possible,
the welding procedure shall be approved by a suitable pre-production welding test
...