Construction procurement

This document sets out standard conditions of tender which bind the employer and tenderer to behave in a particular manner, establish what a tenderer is required to do in order to submit a compliant tender, make known the evaluation criteria to tenderers, and establish the manner in which the employer conducts the process of offer and acceptance and provide the necessary feedback to tenderers on the outcomes of the process. This document is intended for use in procurements relating to goods, services and construction works and disposals other than by auction.

Marchés de construction

General Information

Status
Published
Publication Date
13-Jul-2021
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
17-Jun-2021
Completion Date
17-Jun-2021
Ref Project

RELATIONS

Effective Date
14-Oct-2020

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INTERNATIONAL ISO
STANDARD 10845-3
Second edition
2021-07
Construction procurement —
Part 3:
Standard conditions of tender
Marchés de construction —
Partie 3: Conditions types normalisées des soumissions
Reference number
ISO 10845-3:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 10845-3:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 10845-3:2021(E)
Contents Page

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

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General requirements ..................................................................................................................................................................................... 3

4.1 Actions ............................................................................................................................................................................................................ 3

4.2 Tender documents ............................................................................................................................................................................... 4

4.3 Interpretation .......................................................................................................................................................................................... 4

4.4 Communication and employer's agent ............................................................................................................................... 4

4.5 Employer's right to accept or reject any tender offer ............................................................................................ 4

4.6 Procurement procedures ............................................................................................................................................................... 4

4.6.1 General...................................................................................................................................................................................... 4

4.6.2 Competitive negotiation procedure ................................................................................................................ 5

4.6.3 Proposal procedure using the two-stage tendering system ....................................................... 5

5 Tenderer's obligations .................................................................................................................................................................................... 5

5.1 Eligibility ...................................................................................................................................................................................................... 5

5.1.1 Submit a tender offer ................................................................................................................................................... 5

5.1.2 Notify the employer....................................................................................................................................................... 6

5.2 Cost of tendering ................................................................................................................................................................................... 6

5.3 Checking documents .......................................................................................................................................................................... 6

5.4 Confidentiality and copyright of documents ................................................................................................................. 6

5.5 Reference documents ........................................................................................................................................................................ 6

5.6 Acknowledging addenda ................................................................................................................................................................ 6

5.7 Clarification meeting.......................................................................................................................................................................... 6

5.8 Seeking clarification ........................................................................................................................................................................... 6

5.9 Insurance ..................................................................................................................................................................................................... 6

5.10 Pricing the tender offer.................................................................................................................................................................... 7

5.11 Alterations to documents ............................................................................................................................................................... 7

5.12 Alternative tender offers ................................................................................................................................................................ 7

5.13 Tender submissions ............................................................................................................................................................................ 7

5.13.1 General submission requirements ................................................................................................................... 7

5.13.2 Signatures .............................................................................................................................................................................. 7

5.13.3 Tender securities ............................................................................................................................................................. 8

5.13.4 Inclusion of certificates .............................................................................................................................................. 8

5.13.5 Sealing of documents ................................................................................................................................................... 8

5.13.6 Employer's acceptance of tender submissions ...................................................................................... 8

5.14 Information and data to be completed in all respects .......................................................................................... 8

5.15 Closing time ............................................................................................................................................................................................... 8

5.16 Tender offer validity ........................................................................................................................................................................... 9

5.16.1 Period of validity .............................................................................................................................................................. 9

5.16.2 Withdrawal of tenders ................................................................................................................................................ 9

5.17 Clarification of tender offer after submission .............................................................................................................. 9

5.18 Other material ......................................................................................................................................................................................... 9

5.19 Inspections, tests and analysis .................................................................................................................................................. 9

5.20 Submitting securities, bonds, policies, etc. ..................................................................................................................... 9

5.21 Checking final draft ............................................................................................................................................................................. 9

5.22 Returning other tender documents ...................................................................................................................................10

6 Employer's undertakings .........................................................................................................................................................................10

6.1 Responding to requests from the tenderer .................................................................................................................10

6.1.1 Requests for clarifications ....................................................................................................................................10

6.1.2 Requests to change qualifying requirements .......................................................................................10

© ISO 2021 – All rights reserved iii
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ISO 10845-3:2021(E)

6.2 Issuing addenda ..................................................................................................................................................................................10

6.3 Returning late tender offers .....................................................................................................................................................10

6.4 Opening of tender submissions .............................................................................................................................................10

6.5 Two-envelope system .....................................................................................................................................................................11

6.6 Non-disclosure .....................................................................................................................................................................................11

6.7 Grounds for rejection and disqualification ..................................................................................................................11

6.8 Test for responsiveness ................................................................................................................................................................11

6.9 Arithmetical errors, omission and discrepancies ..................................................................................................12

6.10 Clarification of a tender offer ..................................................................................................................................................12

6.11 Evaluation of tender offers ........................................................................................................................................................12

6.11.1 General...................................................................................................................................................................................12

6.11.2 Method 1: financial offer ........................................................................................................................................12

6.11.3 Method 2: financial offer and quality ..........................................................................................................13

6.11.4 Method 3: financial offer and preferences ..............................................................................................13

6.11.5 Method 4: financial offer, quality and preferences ..........................................................................14

6.11.6 Decimal places ................................................................................................................................................................14

6.11.7 Scoring financial offers ............................................................................................................................................14

6.11.8 Scoring preferences ....................................................................................................................................................15

6.11.9 Scoring quality ................................................................................................................................................................15

6.12 Insurance provided by the employer ................................................................................................................................15

6.13 Acceptance of a tender offer .....................................................................................................................................................15

6.14 Preparing contract documents ...............................................................................................................................................16

6.15 Completing adjudicator's contract ......................................................................................................................................16

6.16 Notice to successful and unsuccessful tenderers ...................................................................................................16

6.17 Providing copies of the contracts .........................................................................................................................................16

6.18 Returning of tender securities ................................................................................................................................................16

6.19 Providing written reasons for actions taken ..............................................................................................................16

Annex A (informative) Commentary ..................................................................................................................................................................18

Annex B (informative) Tender data ....................................................................................................................................................................37

Annex C (informative) Evaluating tender offers ....................................................................................................................................44

Annex D (informative) Example of a tender security .......................................................................................................................62

Annex E (informative) Evaluation reports ...................................................................................................................................................63

Annex F (informative) Impact of different formulae and weightings in the scoring of

methods 2, 3 and 4 ...........................................................................................................................................................................................66

Bibliography .............................................................................................................................................................................................................................71

iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 10845-3:2021(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works,

Subcommittee SC 18, Construction procurement.

This second edition cancels and replaces the first edition (ISO 10845-3:2011), which has been

technically revised.
The main changes compared to the previous edition are as follows:

— definitions and parts of the text have been updated and aligned with other parts of the ISO 10845

series;

— the methods for evaluating tenders have been modified and the implications of choices made in

applying such methods explained;
— an informative annex on the formulation of evaluation reports has been added.
A list of all parts in the ISO 10845 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2021 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO 10845-3:2021(E)
Introduction

Procurement is the process which creates, manages and fulfils contracts. There are accordingly three

phases to the procurement process associated with the delivery and maintenance of construction

works, namely:

— a planning phase during which decisions are made as to what, where and when goods and services

are required, how the market is to be engaged and what is the number, type, nature and timing of

the required contracts;

— an acquisition phase during which contracts are entered into following the execution of a selection

method; and

— a contract management (or contract administration) phase during which compliance with

requirements, changes in requirements and risk events which manifest during the execution of

contracts are managed.

Conditions of tender are required to establish procedures from the time that tenders are invited to the

time that a contract is awarded. Such conditions document the procedures, the manner in which those

engaged in the procurement process are to behave, the obligations of the tenderer and the undertakings

of the employer.

Annex A provides background information on this document, guidance on its use and suggestions

on good practice. Annex B provides guidance on how to develop the tender data for a procurement

document using this document. Annexes C and E offer guidance on the evaluation of tenders and the

structuring of evaluation reports, respectively. Annex D provides an example of a tender security.

Annex F provides insights into the use of different formulae and weightings in the scoring of tender

offers during the evaluation process,

ISO 10845-2 establishes the manner in which procurement documents should be formatted and

compiled. The standard conditions contained in this document can by reference be incorporated in

procurement documents formatted and compiled in accordance with the provisions of ISO 10845-2.

ISO 10845-4 establishes requirements relating to pre-qualification of tenderers who are invited to

submit a tender offer in terms of certain selection methods described in ISO 10845-1.

This document is part of the ISO 10845 series which covers various aspects of procurement within the

construction industry. Each part of the ISO 10845 series relates to a different aspect of procurement.

The objective of the ISO 10845 series is to provide a generic and standard set of processes, procedures

and methods for a procurement system that is fair, equitable, transparent, competitive and cost-

effective and which can be used to promote objectives additional to those associated with the immediate

objective of the procurement itself.
vi © ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
INTERNATIONAL STANDARD ISO 10845-3:2021(E)
Construction procurement —
Part 3:
Standard conditions of tender
1 Scope
This document sets out standard conditions of tender which
a) bind the employer and tenderer to behave in a particular manner,

b) establish what a tenderer is required to do in order to submit a compliant tender,

c) make known the evaluation criteria to tenderers, and

d) establish the manner in which the employer conducts the process of offer and acceptance and

provide the necessary feedback to tenderers on the outcomes of the process.

This document is intended for use in procurements relating to goods, services and construction works

and disposals other than by auction.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
bill of quantities

document for tendering, usually prepared in a standard form, comprising both a descriptive list of

quantities of works and descriptions of the materials, workmanship and other matters required for

construction works

[SOURCE: ISO 6707-2:2017, 3.5.11, modified — The preferred terms specific to the US have been

removed.]
3.2
bond

sum of money or securities submitted to the employer (3.8) or placed in the hands of a third party to

guarantee completion of the work and recovery of the sums which the contractor is recognized as

owing under the terms of the contract

[SOURCE: ISO 6707-2:2017, 3.5.40, modified — "client" has been replaced by "employer"; "of the work"

has been added after "completion".]
© ISO 2021 – All rights reserved 1
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ISO 10845-3:2021(E)
3.3
comparative offer

tenderer's (3.18) financial offer after all tendered parameters that can affect the value of the financial

offer have been taken into consideration to enable comparisons to be made on a comparable basis

3.4
conflict of interest

situation where business, financial, family, political or personal interests could interfere with the

judgment of persons in carrying out their duties for the organisation
[SOURCE: ISO 37001:2016, 3.29]
3.5
contract data

document that identifies the applicable conditions of a contract and states the associated contract-

specific data
[SOURCE: ISO 10845-1:2020, 3.8]
3.6
corrupt practice

offering, giving, receiving or soliciting of anything of value to influence the action of the employer (3.8)

or his staff or agents in the tender process

[SOURCE: ISO 10845-1:2020, 3.10, modified — "the procurement process or the administration of the

contract" has been replaced by "the tender process".]
3.7
eligibility criteria

criteria framed around the ability of a tenderer (3.18) to provide the required goods, services and

construction works or disposals, or any combination thereof, which need to be satisfied in order for a

submission to be evaluated
3.8
employer

person or organization (3.12) intending to or entering into a contract with the contractor to supply

goods, carry out construction works and/or provide services
[SOURCE: ISO 10845-1:2020, 3.15]
3.9
form of offer and acceptance
document that formalizes the legal process of offer and acceptance
3.10
fraudulent practice

misrepresentation of the facts in order to influence the tender process, or the award of a contract

arising from a tender offer (3.17) to the detriment of the employer (3.8), including collusive practices

intended to establish prices at artificial levels

[SOURCE: ISO 10845-1:2020, 3.18, modified — "or the administration of the contract including

compensation procedures" at the end has been removed.]
3.11
joint venture

two or more organizations (3.12) grouped together to carry out work and share the risks, where each is

jointly and severally liable for the actions and work of the other
[SOURCE: ISO 6707-2:2017, 3.8.3]
2 © ISO 2021 – All rights reserved
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ISO 10845-3:2021(E)
3.12
organization

company, firm, enterprise, association or other legal entity, whether incorporated or not, or public body

[SOURCE: ISO 10845-1:2020, 3.21]
3.13
quality

totality of features and characteristics of a product or service that bears on the ability of the product or

service to satisfy stated or implied needs
[SOURCE: ISO 10845-1:2020, 3.27]
3.14
returnable document

document that a tenderer (3.18) is required to complete and submit to the employer (3.8) as part of his

tender submission
3.15
scope of work

document that specifies and describes the goods, services, or construction works which are to be

provided, and any other requirements and constraints relating to the manner in which the contract

work is to be performed

[SOURCE: ISO 10845-1:2020, 3.29, modified — Notes 1 and 2 to entry have been removed.]

3.16
tender data

document that establishes the tenderer's (3.18) obligations in submitting a tender and the employer's

(3.8) undertakings in administering the tender process and evaluating tender offers (3.17)

[SOURCE: ISO 10845-1:2020, 3.37]
3.17
tender offer

written offer to supply goods, carry out construction works and/or provide services under given

conditions, usually at a stated price, and which is capable of acceptance and conversion into a binding

contract
[SOURCE: ISO 10845-1:2020, 3.38]
3.18
tenderer
person or organization (3.12) that submits a tender offer (3.17)
[SOURCE: ISO 10845-1:2020, 3.39, modified — Note 1 to entry has been removed.]
4 General requirements
4.1 Actions

The employer and each tenderer submitting a tender offer shall comply with the standard conditions of

tender. In their dealings with each other, they shall discharge their duties and obligations, as set out in

Clauses 5 and 6, in a timely manner and with integrity, behave equitably, honestly and transparently,

and not engage in anti-competitive practices.

The employer and the tenderer, and all the agents and employees involved in the tender process, shall

avoid conflicts of interest and, where a conflict of interest is perceived or known, declare any such

conflict of interest, indicating the nature of such conflict. Tenderers shall declare any potential conflict

of interest in their tender submissions. Employees, agents and advisors of the employer shall declare

© ISO 2021 – All rights reserved 3
---------------------- Page: 9 ----------------------
ISO 10845-3:2021(E)

any conflict of interest to whoever is responsible for overseeing the procurement process at the start of

any deliberations relating to the procurement process or as soon as they become aware of such conflict,

and abstain from any decisions where such conflict exists or recuse themselves f
...

INTERNATIONAL ISO
STANDARD 10845-3
Second edition
Construction procurement —
Part 3:
Standard conditions of tender
Marchés de construction —
Partie 3: Conditions types normalisées des soumissions
PROOF/ÉPREUVE
Reference number
ISO 10845-3:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 10845-3:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 10845-3:2021(E)
Contents Page

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

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General requirements ..................................................................................................................................................................................... 3

4.1 Actions ............................................................................................................................................................................................................ 3

4.2 Tender documents ............................................................................................................................................................................... 4

4.3 Interpretation .......................................................................................................................................................................................... 4

4.4 Communication and employer's agent ............................................................................................................................... 4

4.5 Employer's right to accept or reject any tender offer ............................................................................................ 4

4.6 Procurement procedures ............................................................................................................................................................... 4

4.6.1 General...................................................................................................................................................................................... 4

4.6.2 Competitive negotiation procedure ................................................................................................................ 5

4.6.3 Proposal procedure using the two-stage tendering system ....................................................... 5

5 Tenderer's obligations .................................................................................................................................................................................... 5

5.1 Eligibility ...................................................................................................................................................................................................... 5

5.1.1 Submit a tender offer ................................................................................................................................................... 5

5.1.2 Notify the employer....................................................................................................................................................... 6

5.2 Cost of tendering ................................................................................................................................................................................... 6

5.3 Checking documents .......................................................................................................................................................................... 6

5.4 Confidentiality and copyright of documents ................................................................................................................. 6

5.5 Reference documents ........................................................................................................................................................................ 6

5.6 Acknowledging addenda ................................................................................................................................................................ 6

5.7 Clarification meeting.......................................................................................................................................................................... 6

5.8 Seeking clarification ........................................................................................................................................................................... 6

5.9 Insurance ..................................................................................................................................................................................................... 6

5.10 Pricing the tender offer.................................................................................................................................................................... 7

5.11 Alterations to documents ............................................................................................................................................................... 7

5.12 Alternative tender offers ................................................................................................................................................................ 7

5.13 Tender submissions ............................................................................................................................................................................ 7

5.13.1 General submission requirements ................................................................................................................... 7

5.13.2 Signatures .............................................................................................................................................................................. 7

5.13.3 Tender securities ............................................................................................................................................................. 8

5.13.4 Inclusion of certificates .............................................................................................................................................. 8

5.13.5 Sealing of documents ................................................................................................................................................... 8

5.13.6 Employer's acceptance of tender submissions ...................................................................................... 8

5.14 Information and data to be completed in all respects .......................................................................................... 8

5.15 Closing time ............................................................................................................................................................................................... 8

5.16 Tender offer validity ........................................................................................................................................................................... 9

5.16.1 Period of validity .............................................................................................................................................................. 9

5.16.2 Withdrawal of tenders ................................................................................................................................................ 9

5.17 Clarification of tender offer after submission .............................................................................................................. 9

5.18 Other material ......................................................................................................................................................................................... 9

5.19 Inspections, tests and analysis .................................................................................................................................................. 9

5.20 Submitting securities, bonds, policies, etc. ..................................................................................................................... 9

5.21 Checking final draft ............................................................................................................................................................................. 9

5.22 Returning other tender documents ...................................................................................................................................10

6 Employer's undertakings .........................................................................................................................................................................10

6.1 Responding to requests from the tenderer .................................................................................................................10

6.1.1 Requests for clarifications ....................................................................................................................................10

6.1.2 Requests to change qualifying requirements .......................................................................................10

© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 10845-3:2021(E)

6.2 Issuing addenda ..................................................................................................................................................................................10

6.3 Returning late tender offers .....................................................................................................................................................10

6.4 Opening of tender submissions .............................................................................................................................................10

6.5 Two-envelope system .....................................................................................................................................................................11

6.6 Non-disclosure .....................................................................................................................................................................................11

6.7 Grounds for rejection and disqualification ..................................................................................................................11

6.8 Test for responsiveness ................................................................................................................................................................11

6.9 Arithmetical errors, omission and discrepancies ..................................................................................................12

6.10 Clarification of a tender offer ..................................................................................................................................................12

6.11 Evaluation of tender offers ........................................................................................................................................................12

6.11.1 General...................................................................................................................................................................................12

6.11.2 Method 1: financial offer ........................................................................................................................................12

6.11.3 Method 2: financial offer and quality ..........................................................................................................13

6.11.4 Method 3: financial offer and preferences ..............................................................................................13

6.11.5 Method 4: financial offer, quality and preferences ..........................................................................14

6.11.6 Decimal places ................................................................................................................................................................14

6.11.7 Scoring financial offers ............................................................................................................................................14

6.11.8 Scoring preferences ....................................................................................................................................................15

6.11.9 Scoring quality ................................................................................................................................................................15

6.12 Insurance provided by the employer ................................................................................................................................15

6.13 Acceptance of a tender offer .....................................................................................................................................................15

6.14 Preparing contract documents ...............................................................................................................................................16

6.15 Completing adjudicator's contract ......................................................................................................................................16

6.16 Notice to successful and unsuccessful tenderers ...................................................................................................16

6.17 Providing copies of the contracts .........................................................................................................................................16

6.18 Returning of tender securities ................................................................................................................................................16

6.19 Providing written reasons for actions taken ..............................................................................................................16

Annex A (informative) Commentary ..................................................................................................................................................................18

Annex B (informative) Tender data ....................................................................................................................................................................37

Annex C (informative) Evaluating tender offers ....................................................................................................................................44

Annex D (informative) Example of a tender security .......................................................................................................................62

Annex E (informative) Evaluation reports ...................................................................................................................................................63

Annex F (informative) Impact of different formulae and weightings in the scoring of

methods 2, 3 and 4 ...........................................................................................................................................................................................66

Bibliography .............................................................................................................................................................................................................................71

iv PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 10845-3:2021(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/

iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 59, Buildings and civil engineering works,

Subcommitee SC 18, Construction procurement.

This second edition cancels and replaces the first edition (ISO 10845-3:2011), which has been

technically revised.
The main changes compared to the previous edition are as follows:

— definitions and parts of the text have been updated and aligned with other parts of the ISO 10845

series;

— the methods for evaluating tenders have been modified and the implications of choices made in

applying such methods explained;
— an informative annex on the formulation of evaluation reports has been added.
A list of all parts in the ISO 10845 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE v
---------------------- Page: 5 ----------------------
ISO 10845-3:2021(E)
Introduction

Procurement is the process which creates, manages and fulfils contracts. There are accordingly three

phases to the procurement process associated with the delivery and maintenance of construction

works, namely:

— a planning phase during which decisions are made as to what, where and when goods and services

are required, how the market is to be engaged and what is the number, type, nature and timing of

the required contracts;

— an acquisition phase during which contracts are entered into following the execution of a selection

method; and

— a contract management (or contract administration) phase during which compliance with

requirements, changes in requirements and risk events which manifest during the execution of

contracts are managed.

Conditions of tender are required to establish procedures from the time that tenders are invited to the

time that a contract is awarded. Such conditions document the procedures, the manner in which those

engaged in the procurement process are to behave, the obligations of the tenderer and the undertakings

of the employer.

Annex A provides background information on this document, guidance on its use and suggestions

on good practice. Annex B provides guidance on how to develop the tender data for a procurement

document using this document. Annexes C and E offer guidance on the evaluation of tenders and the

structuring of evaluation reports, respectively. Annex D provides an example of a tender security.

Annex F provides insights into the use of different formulae and weightings in the scoring of tender

offers during the evaluation process,

ISO 10845-2 establishes the manner in which procurement documents should be formatted and

compiled. The standard conditions contained in this document can by reference be incorporated in

procurement documents formatted and compiled in accordance with the provisions of ISO 10845-2.

ISO 10845-4 establishes requirements relating to pre-qualification of tenderers who are invited to

submit a tender offer in terms of certain selection methods described in ISO 10845-1.

This document is part of the ISO 10845 series which covers various aspects of procurement within the

construction industry. Each part of the ISO 10845 series relates to a different aspect of procurement.

The objective of the ISO 10845 series is to provide a generic and standard set of processes, procedures

and methods for a procurement system that is fair, equitable, transparent, competitive and cost-

effective and which can be used to promote objectives additional to those associated with the immediate

objective of the procurement itself.
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INTERNATIONAL STANDARD ISO 10845-3:2021(E)
Construction procurement —
Part 3:
Standard conditions of tender
1 Scope
This document sets out standard conditions of tender which
a) bind the employer and tenderer to behave in a particular manner,

b) establish what a tenderer is required to do in order to submit a compliant tender,

c) make known the evaluation criteria to tenderers, and

d) establish the manner in which the employer conducts the process of offer and acceptance and

provide the necessary feedback to tenderers on the outcomes of the process.

This document is intended for use in procurements relating to goods, services and construction works

and disposals other than by auction.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
bill of quantities

document for tendering, usually prepared in a standard form, comprising both a descriptive list of

quantities of works and descriptions of the materials, workmanship and other matters required for

construction works

[SOURCE: ISO 6707-2:2017, 3.5.11, modified — The preferred terms specific to the US have been

removed.]
3.2
bond

sum of money or securities submitted to the employer (3.8) or placed in the hands of a third party to

guarantee completion of the work and recovery of the sums which the contractor is recognized as

owing under the terms of the contract

[SOURCE: ISO 6707-2:2017, 3.5.40, modified — "client" has been replaced by "employer"; "of the work"

has been added after "completion".]
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ISO 10845-3:2021(E)
3.3
comparative offer

tenderer's (3.18) financial offer after all tendered parameters that can affect the value of the financial

offer have been taken into consideration to enable comparisons to be made on a comparable basis

3.4
conflict of interest

situation where business, financial, family, political or personal interests could interfere with the

judgment of persons in carrying out their duties for the organisation
[SOURCE: ISO 37001:2016, 3.29]
3.5
contract data

document that identifies the applicable conditions of a contract and states the associated contract-

specific data
[SOURCE: ISO 10845-1:2020, 3.8]
3.6
corrupt practice

offering, giving, receiving or soliciting of anything of value to influence the action of the employer (3.8)

or his staff or agents in the tender process

[SOURCE: ISO 10845-1:2020, 3.10, modified — "the procurement process or the administration of the

contract" has been replaced by "the tender process".]
3.7
eligibility criteria

criteria framed around the ability of a tenderer (3.18) to provide the required goods, services and

construction works or disposals, or any combination thereof, which need to be satisfied in order for a

submission to be evaluated
3.8
employer

person or organization (3.12) intending to or entering into a contract with the contractor to supply

goods, carry out construction works and/or provide services
[SOURCE: ISO 10845-1:2020, 3.15]
3.9
form of offer and acceptance
document that formalizes the legal process of offer and acceptance
3.10
fraudulent practice

misrepresentation of the facts in order to influence the tender process, or the award of a contract

arising from a tender offer (3.17) to the detriment of the employer (3.8), including collusive practices

intended to establish prices at artificial levels

[SOURCE: ISO 10845-1:2020, 3.18, modified — "or the administration of the contract including

compensation procedures" at the end has been removed.]
3.11
joint venture

two or more organizations (3.12) grouped together to carry out work and share the risks, where each is

jointly and severally liable for the actions and work of the other
[SOURCE: ISO 6707-2:2017, 3.8.3]
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ISO 10845-3:2021(E)
3.12
organization

company, firm, enterprise, association or other legal entity, whether incorporated or not, or public body

[SOURCE: ISO 10845-1:2020, 3.21]
3.13
quality

totality of features and characteristics of a product or service that bears on the ability of the product or

service to satisfy stated or implied needs
[SOURCE: ISO 10845-1:2020, 3.27]
3.14
returnable document

document that a tenderer (3.18) is required to complete and submit to the employer (3.8) as part of his

tender submission
3.15
scope of work

document that specifies and describes the goods, services, or construction works which are to be

provided, and any other requirements and constraints relating to the manner in which the contract

work is to be performed

[SOURCE: ISO 10845-1:2020, 3.29, modified — Notes 1 and 2 to entry have been removed.]

3.16
tender data

document that establishes the tenderer's (3.18) obligations in submitting a tender and the employer's

(3.8) undertakings in administering the tender process and evaluating tender offers (3.17)

[SOURCE: ISO 10845-1:2020, 3.37]
3.17
tender offer

written offer to supply goods, carry out construction works and/or provide services under given

conditions, usually at a stated price, and which is capable of acceptance and conversion into a binding

contract
[SOURCE: ISO 10845-1:2020, 3.38]
3.18
tenderer
person or organization (3.12) that submits a tender offer (3.17)
[SOURCE: ISO 10845-1:2020, 3.39, modified — Note 1 to entry has been removed.]
4 General requirements
4.1 Actions

The employer and each tenderer submitting a tender offer shall comply with the standard conditions of

tender. In their dealings with each other, they shall discharge their duties and obligations, as set out in

Clauses 5 and 6, in a timely manner and with integrity, behave equitably, honestly and transparently,

and not engage in anti-competitive practices.

The employer and the tenderer, and all the agents and employees involved in the tender process, shall

avoid conflicts of interest and, where a conflict of interest is perceived or known, declare any such

conflict of interest, indicating the nature of such conflict. Tenderers shall declare any potential conflict

of interest in their tender submissions. Employees, agents and advisors of the employer shall declare

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ISO 10845-3:2021(E)

any conflict of interest to whoever is responsible for overseeing the procurement process at the start of

any deliberations relating to the procurement process or as soon as they bec
...

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