Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

The following BSI references relate to the work on this standard:

Committee reference B/519/1

Draft for comment 08/30168066 DC

Publication history

First published July 1981

Second edition, November 2008

Foreword

Publishing information

This part of BS 6073 is published by BSI and came into effect on 30 November 2008. It was prepared by Subcommittee B/519/1, Masonry units, under the authority of Technical Committee B/519, Masonry and associated testing. A list of organizations represented on these committees can be obtained on request to its secretary.

Supersession

This part of BS 6073 supersedes BS 6073‑2:1981, which is withdrawn.

Relationship with other publications

This part of BS 6073 was originally developed as a method for specifying masonry units in accordance with BS 6073‑1, which has been withdrawn and superseded by BS EN 771‑3 and BS EN 771‑4.

This new edition of BS 6073‑2 is intended to provide a guide to the understanding and application of BS EN 771‑3 and BS EN 771‑4 for specifiers.

Use of this document

As a guide, this part of BS 6073 takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading.

Any user claiming compliance with this part of BS 6073 is expected to be able to justify any course of action that deviates from its recommendations.

Presentational conventions

The provisions in this standard are presented in roman (i.e. upright) type. Its recommendations are expressed in sentences in which the principal auxiliary verb is “should”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Contractual and legal considerations

This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

1 Scope

This British Standard gives guidance for specifying precast concrete masonry units conforming to BS EN 771‑3 and BS EN 771‑4.

2 Normative references

3 Terms and definitions

4 General

5 Basic characteristics (BS EN 771‑3:2003+A1, 6.1, and BS EN 771‑4:2003+A1, 6.1)

5.1 General

5.2 Work size dimensions

5.3 Tolerance category

5.4 Configuration

5.5 Compressive strength

5.6 Dry density

6 Additional characteristics (BS EN 771‑3:2003+A1, 6.1, and BS EN 771‑4:2003+A1, 6.1)

6.1 Thermal properties

6.2 Durability

7 Other properties

7.1 General

7.2 Water absorption

7.3 Moisture movement

7.4 Water vapour permeability

7.5 Reaction to fire

7.6 Shear bond strength

8 Manufacturing control

Bibliography

BS 6073-2:2008

Precast concrete masonry units - Guide for specifying precast concrete masonry units

Current

Published:

30 Nov 2008