Execution of concrete structures

This International Standard gives common requirements for the execution of concrete structures and applies to both in-situ works and construction using prefabricated concrete elements.
This International Standard requires that the execution specification state all the specific requirements
relevant to the particular structure.
This International Standard is applicable to temporary as well as permanent concrete structures.
Additional or different requirements can be considered and, if required, given in the execution specification when using
⎯lightweight aggregate concrete;
⎯other materials (e.g. fibres) or constituent materials;
⎯special technologies/innovative designs.
This International Standard does not apply to the following:
a) concrete members used only as equipment or construction aids for the execution;
b) specification, production and conformity of concrete;
c) production of precast concrete elements made in accordance with product standards;
d) safety and health aspects of execution, or third-party safety requirements;
e) contractual issues or responsibilities for the identified actions.

Exécution des structures en béton

Izvajanje betonskih konstrukcij

Ta mednarodni standard podaja skupne zahteve za izvajanje betonskih konstrukcij in velja za dela in situ ter gradnjo z uporabo montažnih betonskih elementov.
Ta mednarodni standard zahteva, da specifikacija izvajanja navaja vse posebne zahteve,
pomembne za določeno konstrukcijo.
Ta mednarodni standard velja za začasne in stalne betonske konstrukcije.
Preučijo se lahko dodatne ali drugačne zahteve, ki se po potrebi navedejo v specifikaciji izvajanja, kadar se uporabljajo:
⎯ lahki betonski agregati;
⎯ drugi materiali (npr. vlakna) ali sestavni materiali;
⎯ posebne tehnologije/inovativne zasnove.
Ta mednarodni standard ne velja za naslednje:
a) betonske elemente, ki se uporabljajo le kot oprema ali gradbena pomoč pri izvedbi;
b) specifikacijo, proizvodnjo in skladnost betona;
c) proizvodnjo montažnih betonskih elementov, narejenih v skladu s standardi za proizvode;
d) varnostne in zdravstvene vidike izvedbe ali varnostnih zahtev tretje strani;
e) pogodbenih vprašanj ali odgovornosti za opredeljene ukrepe.

General Information

Status
Published
Public Enquiry End Date
27-Feb-2011
Publication Date
12-Apr-2011
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Feb-2011
Due Date
30-Apr-2011
Completion Date
13-Apr-2011

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INTERNATIONAL ISO
STANDARD 22966
First edition
2009-11-15
Execution of concrete structures
Exécution des structures en béton
Reference number
ISO 22966:2009(E)
ISO 2009
---------------------- Page: 1 ----------------------
ISO 22966:2009(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

COPYRIGHT PROTECTED DOCUMENT
© ISO 2009

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2009 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 22966:2009(E)
Contents Page

Foreword .............................................................................................................................................................v

Introduction........................................................................................................................................................vi

1 Scope......................................................................................................................................................1

2 Normative references............................................................................................................................1

3 Terms and definitions ...........................................................................................................................2

4 Execution management ........................................................................................................................4

4.1 Assumptions..........................................................................................................................................4

4.2 Documentation ......................................................................................................................................5

4.3 Quality management .............................................................................................................................6

4.4 Action in the event of a non-conformity .............................................................................................8

5 Falsework and formwork ......................................................................................................................8

5.1 Basic requirements ...............................................................................................................................8

5.2 Materials .................................................................................................................................................9

5.3 Design and installation of falsework ...................................................................................................9

5.4 Design and installation of formwork ...................................................................................................9

5.5 Special formwork.................................................................................................................................10

5.6 Inserts in formwork and embedded components ............................................................................10

5.7 Removal of formwork and falsework.................................................................................................10

6 Reinforcement .....................................................................................................................................11

6.1 General .................................................................................................................................................11

6.2 Materials ...............................................................................................................................................11

6.3 Bending, cutting, transport and storage of the reinforcement.......................................................12

6.4 Welding.................................................................................................................................................13

6.5 Joints ....................................................................................................................................................13

6.6 Assembly and placing of the reinforcement.....................................................................................13

7 Prestressing.........................................................................................................................................13

7.1 General .................................................................................................................................................13

7.2 Materials for prestressing...................................................................................................................14

7.3 Transport and storage ........................................................................................................................15

7.4 Installation of tendons ........................................................................................................................15

7.5 Tensioning ...........................................................................................................................................16

7.6 Protective measures (grouting, greasing) ........................................................................................17

8 Concreting............................................................................................................................................18

8.1 Specification of concrete....................................................................................................................18

8.2 Pre-concreting operations..................................................................................................................18

8.3 Delivery, reception and site transport of fresh concrete ................................................................19

8.4 Placing and compaction .....................................................................................................................19

8.5 Curing and protection.........................................................................................................................20

8.6 Post-concreting operations................................................................................................................22

8.7 Concreting of composite structures .................................................................................................22

8.8 Surface finish.......................................................................................................................................22

9 Execution with precast concrete elements.......................................................................................22

9.1 General .................................................................................................................................................22

9.2 Factory produced precast elements..................................................................................................22

9.3 Site-manufactured precast elements ................................................................................................22

9.4 Handling and storage..........................................................................................................................23

9.5 Placing and adjustment ......................................................................................................................23

© ISO 2009 – All rights reserved iii
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ISO 22966:2009(E)

9.6 Jointing and completion works..........................................................................................................24

10 Geometrical tolerances .......................................................................................................................24

10.1 General..................................................................................................................................................24

10.2 Reference system ................................................................................................................................25

10.3 Base supports (foundations)..............................................................................................................25

10.4 Columns and walls ..............................................................................................................................26

10.5 Beams and slabs..................................................................................................................................27

10.6 Sections ................................................................................................................................................28

10.7 Surfaces and edge straightness ........................................................................................................30

10.8 Tolerances for holes and inserts .......................................................................................................30

Annex A (informative) Guidance on documentation .....................................................................................31

Annex B (informative) Guidance on quality management ............................................................................36

Annex C (informative) Guidance on falsework and formwork......................................................................38

Annex D (informative) Guidance on reinforcement .......................................................................................40

Annex E (informative) Guidance on prestressing..........................................................................................42

Annex F (informative) Guidance on concreting .............................................................................................45

Annex G (informative) Guidance on geometrical tolerances........................................................................51

Annex H (informative) Guidance on national annex ......................................................................................58

Bibliography ......................................................................................................................................................59

iv © ISO 2009 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 22966:2009(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 22966 was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and prestressed

concrete, Subcommittee SC 3, Concrete production and execution of concrete structures.

© ISO 2009 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO 22966:2009(E)
Introduction

This International Standard applies to the execution of concrete structures to achieve the intended levels of

[3]

reliability and serviceability that are given in ISO 2394 and in standards for the design of concrete structures.

This International Standard has three functions:

⎯ to transfer the requirements set during design from the designer to the constructor, i.e. to be a link

between design and execution;

⎯ to give a set of standardized technical requirements for the execution when ordering a concrete structure;

⎯ to serve as a check list for the designer to ensure that he provides the constructor with all relevant

technical information for the execution of the structure; see Annex A.

In order to achieve these objectives, it is necessary that the designer prepare a set of documents and

drawings giving all information required for the execution of the work in accordance with the plans. This set of

documents is in this International Standard referred to as the “execution specification”. This International

Standard leaves a number of items open that can be decided by the execution specification.

It is necessary that the execution specification refer to national provisions in areas where these apply.

It is recognized in this International Standard that areas such as detailed requirements for competence of

personnel and details related to quality management are within the competence of the member states.

A national annex can refer to national standards approved and published by an ISO member body and that

supplement this International Standard; alternatively, the supplementing rules can be given directly in the

national annex.
vi © ISO 2009 – All rights reserved
---------------------- Page: 6 ----------------------
INTERNATIONAL STANDARD ISO 22966:2009(E)
Execution of concrete structures
1 Scope

This International Standard gives common requirements for the execution of concrete structures and applies

to both in-situ works and construction using prefabricated concrete elements.

This International Standard requires that the execution specification state all the specific requirements

relevant to the particular structure.

This International Standard is applicable to temporary as well as permanent concrete structures.

Additional or different requirements can be considered and, if required, given in the execution specification

when using
⎯ lightweight aggregate concrete;
⎯ other materials (e.g. fibres) or constituent materials;
⎯ special technologies/innovative designs.
This International Standard does not apply to the following:

a) concrete members used only as equipment or construction aids for the execution;

b) specification, production and conformity of concrete;

c) production of precast concrete elements made in accordance with product standards;

d) safety and health aspects of execution, or third-party safety requirements;
e) contractual issues or responsibilities for the identified actions.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.
ISO 6934 (all parts), Steel for the prestressing of concrete
ISO 6935-1, Steel for the reinforcement of concrete — Part 1: Plain bars
ISO 6935-2, Steel for the reinforcement of concrete — Part 2: Ribbed bars

ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1: Reinforcing

bars, wire rod and wire

ISO 17660-1, Welding — Welding of reinforcing steel — Part 1: Load-bearing welded joints

© ISO 2009 – All rights reserved 1
---------------------- Page: 7 ----------------------
ISO 22966:2009(E)

ISO 17660-2, Welding — Welding of reinforcing steel — Part 2: Non-load-bearing welded joints

ISO 22965-1, Concrete — Part 1: Methods of specifying and guidance for the specifier

ISO 22965-2, Concrete — Part 2; Specification of constituent materials, production of concrete and

compliance of concrete
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
back-propping

propping installed at levels below the slab that supports the falsework in order to distribute the load to suitable

support
3.2
chair for reinforcement

device used to secure the position between reinforcement layers, e.g. supporting top reinforcement in a slab

3.3
construction works
everything that is constructed or results from construction operations

NOTE The term covers both building and civil engineering works. It refers to the complete construction comprised of

both structural and non-structural components.
3.4
constructor
organization executing the works
3.5
erection specification

documents covering all drawings, technical data and requirements required for the safe erection of precast

elements
3.6
execution

all activities carried out for the physical completion of the work, i.e. procurement, scaffolding, formwork,

reinforcing, concreting, curing, erection of precast elements, etc., and the inspection and documentation

thereof
3.7
execution class

classified set of requirements specified for the execution of the works as a whole or an individual component

3.8
execution specification

documents covering all drawings, technical data and requirements necessary for the execution of a particular

project

NOTE The execution specification is not one document but signifies the total sum of documents required for the

execution of the work as provided by the designer to the constructor and includes the project specification prepared to

supplement and qualify the requirements of this International Standard, as well as referring to the national provisions

relevant in the place of use.
2 © ISO 2009 – All rights reserved
---------------------- Page: 8 ----------------------
ISO 22966:2009(E)
3.9
falsework

temporary support for a part of a structure while it is not self-supporting and for associated service load

3.10
formwork

structure, permanent or temporary, for containing poured concrete, moulding it to the required dimensions and

supporting it until it is able to support itself

NOTE Formwork consists of the face contact material and the bearers directly supporting the face contact material.

3.11
inspection

conformity evaluation by observation and judgment accompanied as appropriate by measurement, testing or

gauging
[6]
[ISO 9000:2005 , 3.8.2]
3.12
method statement

documentation describing the methods and procedures that shall be used to perform the work

3.13
permitted deviation

permitted algebraic differences between the limits of size and the corresponding reference size

[1]
[Adapted from ISO 1803:1997 , 3.8.]
3.14
precast concrete element

concrete element cast and cured in a place other than the final location of use (factory produced or site

manufactured)

NOTE Precast concrete element manufactured in compliance with the relevant international product standard is

called a “precast concrete product.” In this International Standard, the shorter terms “precast element” and “precast

product” are used.
3.15
project specification

project-specific document describing the requirements applicable for the particular project

3.16
quality plan

document specifying which procedures and associated resources shall be applied by whom and when to meet

the requirements of the specific project
[6]
NOTE Guidance can be found in ISO 9000 concerning the content of a quality plan.
3.17
reference line
line defined in the execution specification to which positions are related
3.18
secondary line

any line used for the purpose of setting-out the proposed building and for checking the compliance of the

building or building parts
[2]
[ISO 4463-1:1989 , 4.4]
© ISO 2009 – All rights reserved 3
---------------------- Page: 9 ----------------------
ISO 22966:2009(E)
3.19
spacer
device used to secure correct spacing between the formwork and the reinforcement
3.20
surface finish

description of the appearance of the concrete surface including aspects of geometry, texture, colour etc.

3.21
temporary structure
structure designed for a short design working life
3.22
tolerance
difference between upper limit of size and the lower limit of size
[1]
[Adapted from ISO 1803:1997 , 3.11.]

NOTE 1 Geometrical tolerances for precast concrete elements are subdivided as follows:

⎯ production tolerances;

⎯ erection tolerances, i.e. geometrical tolerances relating to location, verticality, horizontality or other characteristics of

the construction assembly;

⎯ construction tolerances, i.e. geometrical tolerances that are a combination of production, site construction and

erection tolerances.

NOTE 2 Tolerance is an absolute value without sign, it is however commonly expressed by “the sum of the positive

and negative permitted deviation” so that the value of the tolerance is implicit.

3.23
normal tolerance
basic limit for geometrical deviations that ensures that the structure
⎯ satisfies the design assumptions;
⎯ achieves other functional requirements of the construction works.

NOTE In this International Standard, normal tolerances are referred to as tolerance class 1.

3.24
special tolerance
tolerance other than normal tolerance
3.25
works

those parts of the construction works that are structural concrete work and are described in the execution

specification
4 Execution management
4.1 Assumptions
4.1.1 This International Standard assumes the following:
⎯ availability of a comprehensive design of the structure;

⎯ project management in charge of the supervision of the works that can enable the execution of a

conforming structure;
4 © ISO 2009 – All rights reserved
---------------------- Page: 10 ----------------------
ISO 22966:2009(E)

⎯ site management that can take charge of the organization of the works and enable the correct and safe

use of the equipment and machinery, the required quality of materials, the execution of a conforming

structure and its safe use up to the delivery of the works.

4.1.2 When precast elements are used, the following additional assumptions are made:

⎯ availability of a specific design of the precast elements conforming to the relevant standards;

⎯ availability of design coordination between precast elements and site manufactured components;

⎯ technical specification of the precast structure with instructions for installation;

⎯ availability of an erection management to direct the erection team.

4.1.3 This International Standard presupposes that the work is carried out with the necessary skill and

adequate equipment and resources to perform the work in accordance with this International Standard and the

requirements of the execution specification.

NOTE In some countries, there are special requirements regarding the level of knowledge, training and experience of

personnel involved in the various tasks.

4.1.4 It is assumed that the constructor will comply with national regulations and standards, e.g. with

respect to
⎯ quality management;

⎯ qualifications for the personnel doing the various activities covered by this International Standard;

⎯ health and safety aspects of construction;
⎯ environmental aspects.

4.1.5 This International Standard assumes that the structure after completion is used as intended in the

design and submitted to the planned inspection and maintenance necessary to achieve the intended design

working life and to detect weaknesses or any unexpected behaviour.
4.2 Documentation
4.2.1 Execution specification

4.2.1.1 Before commencement of the execution of any part of the works, the execution specification

relevant to that part of the works shall be complete and available.
4.2.1.2 The following items shall be included in the execution specification:

⎯ reference to this International Standard and, if published, its national annex;

⎯ reference to other relevant International Standards and national technical approvals;

⎯ reference to relevant national regulations and standards;

⎯ project specification giving information and requirements for the particular project prepared to supplement

and qualify the requirements of the above-listed documents;
⎯ drawings and other technical documents needed for the execution.

Annex H gives guidance on the content of a national annex to this International standard; a national annex

may cover any of the areas indicated as open for specification by the execution specification.

NOTE Table A.1 contains a checklist of requirements and information that it can be necessary to include in the

execution specification, as appropriate.
© ISO 2009 – All rights reserved 5
---------------------- Page: 11 ----------------------
ISO 22966:2009(E)
4.2.1.3 In addition, where relevant, procedures shall be established for
⎯ making alterations to previously agreed requirements;
⎯ distribution, filing and recording of technical documents used for the works.
4.2.2 Quality plan

4.2.2.1 Where a quality plan is required by the execution specification, it shall be available on site.

4.2.2.2 There may be one quality plan covering all activities or one overall plan supplemented by

separate plans for the various phases and activities to be performed.
4.2.3 Execution record documentation

A record shall be made giving the required information as specified for the execution class in Tables 1, 2

and 3.
4.2.4 Special record documentation

If special documentation is required, the type and extent of the documentation shall be stated in the execution

specification.
4.3 Quality management
4.3.1 Execution classes

4.3.1.1 Supervision and inspection of the work shall ensure that the construction is completed in

accordance with the execution specification.

4.3.1.2 Inspection in this context refers to verifying conformity of the properties of products and materials

being used as well as inspection of the execution of the works.

4.3.1.3 Requirements for quality management are specified using one of the following three classes, for

which the required strictness increases from class 1 to class 3:
⎯ execution class 1;
⎯ execution class 2;
⎯ execution class 3.

4.3.1.4 The execution class may refer to the complete structure, to components of the structure or to

certain materials/technologies used for the execution.

4.3.1.5 The execution class being used shall be stated in the execution specification.

4.3.1.6 This International Standard does not deal with provisions related to degree of independence of

the personnel performing the inspection.

4.3.1.7 Further detailing of the requirements for the quality management regime in excess of what is

given in this International Standard may be stated in the execution specification.

NOTE Annex B gives guidance on quality management.
6 © ISO 2009 – All rights reserved
---------------------- Page: 12 ----------------------
ISO 22966:2009(E)
4.3.2 Inspection of materials and products

The inspection requirements for conformity with the execution specification are given in Table 1.

Table 1 — Inspection for materials and products
Subject Execution class 1 Execution class 2 Execution class 3
Materials for scaffold,
In accordance with 5.1 and 5.2
formwork and falsework
Reinforcing steel In accordance with 6.2
Prestressing system Shall not be used in this
In accordance with 7.2
components class
In accordance with 8.1 and 8.3
Fresh concrete, ready-mixed
or site-mixed
At reception of ready-mixed concrete a delivery ticket shall be present
Other items In accordance with the execution specification
Precast elements In accordance with 9.2 and 9.3
Inspection report Not required Required

Products bearing a recognized quality mark or certified by an approved certification body shall be checked against the delivery

ticket and visually inspected. In cases of doubt, further inspection shall be undertaken to check that the product conforms to its

specification. Other products shall be subject to inspection and acceptance testing as defined in the execution specification.

For example, items such as embedded steel components, etc.

If prescribed concrete is used, the relevant properties shall be checked by tests.

4.3.3 Inspection of execution

The inspection requirements for conformity with the execution specification are given in Tables 2

...

SLOVENSKI STANDARD
SIST ISO 22966:2011
01-maj-2011
Izvajanje betonskih konstrukcij
Execution of concrete structures
Exécution des structures en béton
Ta slovenski standard je istoveten z: ISO 22966:2009
ICS:
91.080.40 Betonske konstrukcije Concrete structures
SIST ISO 22966:2011 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 22966:2011
---------------------- Page: 2 ----------------------
SIST ISO 22966:2011
INTERNATIONAL ISO
STANDARD 22966
First edition
2009-11-15
Execution of concrete structures
Exécution des structures en béton
Reference number
ISO 22966:2009(E)
ISO 2009
---------------------- Page: 3 ----------------------
SIST ISO 22966:2011
ISO 22966:2009(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

COPYRIGHT PROTECTED DOCUMENT
© ISO 2009

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2009 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 22966:2011
ISO 22966:2009(E)
Contents Page

Foreword .............................................................................................................................................................v

Introduction........................................................................................................................................................vi

1 Scope......................................................................................................................................................1

2 Normative references............................................................................................................................1

3 Terms and definitions ...........................................................................................................................2

4 Execution management ........................................................................................................................4

4.1 Assumptions..........................................................................................................................................4

4.2 Documentation ......................................................................................................................................5

4.3 Quality management .............................................................................................................................6

4.4 Action in the event of a non-conformity .............................................................................................8

5 Falsework and formwork ......................................................................................................................8

5.1 Basic requirements ...............................................................................................................................8

5.2 Materials .................................................................................................................................................9

5.3 Design and installation of falsework ...................................................................................................9

5.4 Design and installation of formwork ...................................................................................................9

5.5 Special formwork.................................................................................................................................10

5.6 Inserts in formwork and embedded components ............................................................................10

5.7 Removal of formwork and falsework.................................................................................................10

6 Reinforcement .....................................................................................................................................11

6.1 General .................................................................................................................................................11

6.2 Materials ...............................................................................................................................................11

6.3 Bending, cutting, transport and storage of the reinforcement.......................................................12

6.4 Welding.................................................................................................................................................13

6.5 Joints ....................................................................................................................................................13

6.6 Assembly and placing of the reinforcement.....................................................................................13

7 Prestressing.........................................................................................................................................13

7.1 General .................................................................................................................................................13

7.2 Materials for prestressing...................................................................................................................14

7.3 Transport and storage ........................................................................................................................15

7.4 Installation of tendons ........................................................................................................................15

7.5 Tensioning ...........................................................................................................................................16

7.6 Protective measures (grouting, greasing) ........................................................................................17

8 Concreting............................................................................................................................................18

8.1 Specification of concrete....................................................................................................................18

8.2 Pre-concreting operations..................................................................................................................18

8.3 Delivery, reception and site transport of fresh concrete ................................................................19

8.4 Placing and compaction .....................................................................................................................19

8.5 Curing and protection.........................................................................................................................20

8.6 Post-concreting operations................................................................................................................22

8.7 Concreting of composite structures .................................................................................................22

8.8 Surface finish.......................................................................................................................................22

9 Execution with precast concrete elements.......................................................................................22

9.1 General .................................................................................................................................................22

9.2 Factory produced precast elements..................................................................................................22

9.3 Site-manufactured precast elements ................................................................................................22

9.4 Handling and storage..........................................................................................................................23

9.5 Placing and adjustment ......................................................................................................................23

© ISO 2009 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 22966:2011
ISO 22966:2009(E)

9.6 Jointing and completion works..........................................................................................................24

10 Geometrical tolerances .......................................................................................................................24

10.1 General..................................................................................................................................................24

10.2 Reference system ................................................................................................................................25

10.3 Base supports (foundations)..............................................................................................................25

10.4 Columns and walls ..............................................................................................................................26

10.5 Beams and slabs..................................................................................................................................27

10.6 Sections ................................................................................................................................................28

10.7 Surfaces and edge straightness ........................................................................................................30

10.8 Tolerances for holes and inserts .......................................................................................................30

Annex A (informative) Guidance on documentation .....................................................................................31

Annex B (informative) Guidance on quality management ............................................................................36

Annex C (informative) Guidance on falsework and formwork......................................................................38

Annex D (informative) Guidance on reinforcement .......................................................................................40

Annex E (informative) Guidance on prestressing..........................................................................................42

Annex F (informative) Guidance on concreting .............................................................................................45

Annex G (informative) Guidance on geometrical tolerances........................................................................51

Annex H (informative) Guidance on national annex ......................................................................................58

Bibliography ......................................................................................................................................................59

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SIST ISO 22966:2011
ISO 22966:2009(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies

(ISO member bodies). The work of preparing International Standards is normally carried out through ISO

technical committees. Each member body interested in a subject for which a technical committee has been

established has the right to be represented on that committee. International organizations, governmental and

non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the

International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 22966 was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and prestressed

concrete, Subcommittee SC 3, Concrete production and execution of concrete structures.

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SIST ISO 22966:2011
ISO 22966:2009(E)
Introduction

This International Standard applies to the execution of concrete structures to achieve the intended levels of

[3]

reliability and serviceability that are given in ISO 2394 and in standards for the design of concrete structures.

This International Standard has three functions:

⎯ to transfer the requirements set during design from the designer to the constructor, i.e. to be a link

between design and execution;

⎯ to give a set of standardized technical requirements for the execution when ordering a concrete structure;

⎯ to serve as a check list for the designer to ensure that he provides the constructor with all relevant

technical information for the execution of the structure; see Annex A.

In order to achieve these objectives, it is necessary that the designer prepare a set of documents and

drawings giving all information required for the execution of the work in accordance with the plans. This set of

documents is in this International Standard referred to as the “execution specification”. This International

Standard leaves a number of items open that can be decided by the execution specification.

It is necessary that the execution specification refer to national provisions in areas where these apply.

It is recognized in this International Standard that areas such as detailed requirements for competence of

personnel and details related to quality management are within the competence of the member states.

A national annex can refer to national standards approved and published by an ISO member body and that

supplement this International Standard; alternatively, the supplementing rules can be given directly in the

national annex.
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SIST ISO 22966:2011
INTERNATIONAL STANDARD ISO 22966:2009(E)
Execution of concrete structures
1 Scope

This International Standard gives common requirements for the execution of concrete structures and applies

to both in-situ works and construction using prefabricated concrete elements.

This International Standard requires that the execution specification state all the specific requirements

relevant to the particular structure.

This International Standard is applicable to temporary as well as permanent concrete structures.

Additional or different requirements can be considered and, if required, given in the execution specification

when using
⎯ lightweight aggregate concrete;
⎯ other materials (e.g. fibres) or constituent materials;
⎯ special technologies/innovative designs.
This International Standard does not apply to the following:

a) concrete members used only as equipment or construction aids for the execution;

b) specification, production and conformity of concrete;

c) production of precast concrete elements made in accordance with product standards;

d) safety and health aspects of execution, or third-party safety requirements;
e) contractual issues or responsibilities for the identified actions.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.
ISO 6934 (all parts), Steel for the prestressing of concrete
ISO 6935-1, Steel for the reinforcement of concrete — Part 1: Plain bars
ISO 6935-2, Steel for the reinforcement of concrete — Part 2: Ribbed bars

ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1: Reinforcing

bars, wire rod and wire

ISO 17660-1, Welding — Welding of reinforcing steel — Part 1: Load-bearing welded joints

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ISO 17660-2, Welding — Welding of reinforcing steel — Part 2: Non-load-bearing welded joints

ISO 22965-1, Concrete — Part 1: Methods of specifying and guidance for the specifier

ISO 22965-2, Concrete — Part 2; Specification of constituent materials, production of concrete and

compliance of concrete
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
back-propping

propping installed at levels below the slab that supports the falsework in order to distribute the load to suitable

support
3.2
chair for reinforcement

device used to secure the position between reinforcement layers, e.g. supporting top reinforcement in a slab

3.3
construction works
everything that is constructed or results from construction operations

NOTE The term covers both building and civil engineering works. It refers to the complete construction comprised of

both structural and non-structural components.
3.4
constructor
organization executing the works
3.5
erection specification

documents covering all drawings, technical data and requirements required for the safe erection of precast

elements
3.6
execution

all activities carried out for the physical completion of the work, i.e. procurement, scaffolding, formwork,

reinforcing, concreting, curing, erection of precast elements, etc., and the inspection and documentation

thereof
3.7
execution class

classified set of requirements specified for the execution of the works as a whole or an individual component

3.8
execution specification

documents covering all drawings, technical data and requirements necessary for the execution of a particular

project

NOTE The execution specification is not one document but signifies the total sum of documents required for the

execution of the work as provided by the designer to the constructor and includes the project specification prepared to

supplement and qualify the requirements of this International Standard, as well as referring to the national provisions

relevant in the place of use.
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3.9
falsework

temporary support for a part of a structure while it is not self-supporting and for associated service load

3.10
formwork

structure, permanent or temporary, for containing poured concrete, moulding it to the required dimensions and

supporting it until it is able to support itself

NOTE Formwork consists of the face contact material and the bearers directly supporting the face contact material.

3.11
inspection

conformity evaluation by observation and judgment accompanied as appropriate by measurement, testing or

gauging
[6]
[ISO 9000:2005 , 3.8.2]
3.12
method statement

documentation describing the methods and procedures that shall be used to perform the work

3.13
permitted deviation

permitted algebraic differences between the limits of size and the corresponding reference size

[1]
[Adapted from ISO 1803:1997 , 3.8.]
3.14
precast concrete element

concrete element cast and cured in a place other than the final location of use (factory produced or site

manufactured)

NOTE Precast concrete element manufactured in compliance with the relevant international product standard is

called a “precast concrete product.” In this International Standard, the shorter terms “precast element” and “precast

product” are used.
3.15
project specification

project-specific document describing the requirements applicable for the particular project

3.16
quality plan

document specifying which procedures and associated resources shall be applied by whom and when to meet

the requirements of the specific project
[6]
NOTE Guidance can be found in ISO 9000 concerning the content of a quality plan.
3.17
reference line
line defined in the execution specification to which positions are related
3.18
secondary line

any line used for the purpose of setting-out the proposed building and for checking the compliance of the

building or building parts
[2]
[ISO 4463-1:1989 , 4.4]
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3.19
spacer
device used to secure correct spacing between the formwork and the reinforcement
3.20
surface finish

description of the appearance of the concrete surface including aspects of geometry, texture, colour etc.

3.21
temporary structure
structure designed for a short design working life
3.22
tolerance
difference between upper limit of size and the lower limit of size
[1]
[Adapted from ISO 1803:1997 , 3.11.]

NOTE 1 Geometrical tolerances for precast concrete elements are subdivided as follows:

⎯ production tolerances;

⎯ erection tolerances, i.e. geometrical tolerances relating to location, verticality, horizontality or other characteristics of

the construction assembly;

⎯ construction tolerances, i.e. geometrical tolerances that are a combination of production, site construction and

erection tolerances.

NOTE 2 Tolerance is an absolute value without sign, it is however commonly expressed by “the sum of the positive

and negative permitted deviation” so that the value of the tolerance is implicit.

3.23
normal tolerance
basic limit for geometrical deviations that ensures that the structure
⎯ satisfies the design assumptions;
⎯ achieves other functional requirements of the construction works.

NOTE In this International Standard, normal tolerances are referred to as tolerance class 1.

3.24
special tolerance
tolerance other than normal tolerance
3.25
works

those parts of the construction works that are structural concrete work and are described in the execution

specification
4 Execution management
4.1 Assumptions
4.1.1 This International Standard assumes the following:
⎯ availability of a comprehensive design of the structure;

⎯ project management in charge of the supervision of the works that can enable the execution of a

conforming structure;
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⎯ site management that can take charge of the organization of the works and enable the correct and safe

use of the equipment and machinery, the required quality of materials, the execution of a conforming

structure and its safe use up to the delivery of the works.

4.1.2 When precast elements are used, the following additional assumptions are made:

⎯ availability of a specific design of the precast elements conforming to the relevant standards;

⎯ availability of design coordination between precast elements and site manufactured components;

⎯ technical specification of the precast structure with instructions for installation;

⎯ availability of an erection management to direct the erection team.

4.1.3 This International Standard presupposes that the work is carried out with the necessary skill and

adequate equipment and resources to perform the work in accordance with this International Standard and the

requirements of the execution specification.

NOTE In some countries, there are special requirements regarding the level of knowledge, training and experience of

personnel involved in the various tasks.

4.1.4 It is assumed that the constructor will comply with national regulations and standards, e.g. with

respect to
⎯ quality management;

⎯ qualifications for the personnel doing the various activities covered by this International Standard;

⎯ health and safety aspects of construction;
⎯ environmental aspects.

4.1.5 This International Standard assumes that the structure after completion is used as intended in the

design and submitted to the planned inspection and maintenance necessary to achieve the intended design

working life and to detect weaknesses or any unexpected behaviour.
4.2 Documentation
4.2.1 Execution specification

4.2.1.1 Before commencement of the execution of any part of the works, the execution specification

relevant to that part of the works shall be complete and available.
4.2.1.2 The following items shall be included in the execution specification:

⎯ reference to this International Standard and, if published, its national annex;

⎯ reference to other relevant International Standards and national technical approvals;

⎯ reference to relevant national regulations and standards;

⎯ project specification giving information and requirements for the particular project prepared to supplement

and qualify the requirements of the above-listed documents;
⎯ drawings and other technical documents needed for the execution.

Annex H gives guidance on the content of a national annex to this International standard; a national annex

may cover any of the areas indicated as open for specification by the execution specification.

NOTE Table A.1 contains a checklist of requirements and information that it can be necessary to include in the

execution specification, as appropriate.
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4.2.1.3 In addition, where relevant, procedures shall be established for
⎯ making alterations to previously agreed requirements;
⎯ distribution, filing and recording of technical documents used for the works.
4.2.2 Quality plan

4.2.2.1 Where a quality plan is required by the execution specification, it shall be available on site.

4.2.2.2 There may be one quality plan covering all activities or one overall plan supplemented by

separate plans for the various phases and activities to be performed.
4.2.3 Execution record documentation

A record shall be made giving the required information as specified for the execution class in Tables 1, 2

and 3.
4.2.4 Special record documentation

If special documentation is required, the type and extent of the documentation shall be stated in the execution

specification.
4.3 Quality management
4.3.1 Execution classes

4.3.1.1 Supervision and inspection of the work shall ensure that the construction is completed in

accordance with the execution specification.

4.3.1.2 Inspection in this context refers to verifying conformity of the properties of products and materials

being used as well as inspection of the execution of the works.

4.3.1.3 Requirements for quality management are specified using one of the following three classes, for

which the required strictness increases from class 1 to class 3:
⎯ execution class 1;
⎯ execution class 2;
⎯ execution class 3.

4.3.1.4 The execution class may refer to the complete structure, to components of the structure or to

certain materials/technologies used for the execution.

4.3.1.5 The execution class being used shall be stated in the execution specification.

4.3.1.6 This International Standard does not deal with provisions related to degree of independence of

the personnel performing the inspection.

4.3.1.7 Further detailing of the requirements for the quality management regime in excess of what is

given in this International Standard may be stated in the execution specification.

NOTE Annex B gives guidance on quality management.
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4.3.2 Inspection of materials and products

The inspection requirements for conformity with the execution specification are given in Table 1.

Table 1 — Inspection for materials and products
Subject Execution class 1 Execution class 2 Execution class 3
Materials for scaffold,
In accordance with 5.1 and 5.2
formwork and falsework
Reinforcing steel In accordance with 6.2
Prestressing system Shall not be used in this
In accordance with 7.2
components class
In accordance with 8.1 and 8.3
Fresh concrete, ready-mixed
or site-mixed
At reception of ready-mixed concrete a delivery ticket shall be present
...

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