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The following BSI references relate to the work on this document:
Committee reference B/505
Draft for comment 19/30380857 DC

Foreword

Publishing information

This British Standard is published by BSI Standards Limited, under licence from The British Standards Institution, and came into effect on 31 March 2020. It was prepared by Technical Committee B/505, Wastewater engineering. A list of organizations represented on this committee can be obtained on request to its secretary.

Supersession

This British Standard supersedes BS 7903:1997, which is withdrawn.

Relationship with other publications

This British Standard gives guidance on the installation of products conforming to BS EN 124‑1:2015, BS EN 124‑2:2015, BS EN 124‑3:2015, BS EN 124‑4:2015, BS EN 124‑5:2015 and BS EN 124‑6:2015.

Information about this document

This is a full revision of the standard, and introduces the following principal changes:

the scope has been modified to clarify that the guidance is for the selection and installation of products conforming to the BS EN 124 series as part of an in-service system; and
to avoid conflict with the BS EN 124 series, the “specifications” for products that appeared in the previous edition have been removed, but where appropriate have been re-drafted as current industry practice to preserve useful information.

This publication can be withdrawn, revised, partially superseded or superseded. Information regarding the status of this publication can be found in the Standards Catalogue on the BSI website at bsigroup.com/standards, or by contacting the Customer Services team.

Where websites and webpages have been cited, they are provided for ease of reference and are correct at the time of publication. The location of a webpage or website, or its contents, cannot be guaranteed.

Product certification. Users of this British Standard are advised to consider the desirability of obtaining third-party certification of conformity with BS EN 124‑1:2015 to BS EN 124‑6:2015 for products they intend to install.

NOTE Specifiers might require this as part of the contract.

Use of this document

As a guide, this British Standard takes the form of guidance and recommendations. It should not be quoted as if it were a specification or a code of practice and claims of compliance cannot be made to it.

Presentational conventions

The guidance in this standard is presented in roman (i.e. upright) type. Any 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.

Where words have alternative spellings, the preferred spelling of the Shorter Oxford English Dictionary is used (e.g. “organization” rather than “organisation”).

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 the selection and installation of manhole tops and gully tops conforming to BS EN 124‑1:2015 to BS EN 124‑6:2015 for covering gullies, manholes and inspection chambers to be used in conjunction with other components and materials to form a safe, durable, maintainable and usable installed system for highway applications.

2 Normative references

3 Terms and definitions

4 Classification

4.1 General (see BS EN 124‑1:2015, Clause 4 and Annex F)

4.2 Place of installation

5 Materials

5.1 General (see BS EN 124‑1:2015, 5.1)

5.2 Cover fillings (see BS EN 124‑1:2015, 5.2)

5.3 Frames in combination with concrete (see BS EN 124‑1:2015, 5.3)

5.4 Coating materials

5.5 Installation materials (see BS EN 124‑1:2015, Annex F)

5.6 Compatibility of components

6 Design attributes

6.1 Vents in covers (see BS EN 124‑1:2015, 6.1)

6.2 Clear opening of manhole tops for man entry (see BS EN 124‑1:2015, 6.2)

6.3 Depth of insertion (see BS EN 124‑1:2015, 6.3)

6.4 Clearance

6.5 Compatibility of seatings (see BS EN 124‑1:2015, 6.5)

6.6 Securing of the cover/grating within the frame (see BS EN 124‑1:2015, 6.6)

6.7 Handling of covers and gratings (see BS EN 124‑1:2015, 6.7)

6.8 Slot dimensions of gratings

6.9 Dirt pans and dirt buckets (see BS EN 124‑1:2015, 6.9)

6.10 Positioning of covers and gratings (see BS EN 124‑1:2015, 6.10)

6.11 Flatness of manhole covers and gratings (see BS EN 124‑1:2015, 6.11)

6.12 Concaveness of gratings (see BS EN 124‑1:2015, 6.12)

6.13 Surface conditions (see BS EN 124‑1:2015, 6.13)

6.14 Manhole tops with sealing features (see BS EN 124‑1:2015, 6.14)

6.15 Frame bearing area (see BS EN 124‑1:2015, 6.15)

6.16 Frame depth (see BS EN 124‑1:2015, 6.16)

6.17 Opening angle of hinged covers/gratings (see BS EN 124‑1:2015, 6.17)

6.18 Covers with fillings (see BS EN 124‑1:2015, 6.18)

6.19 Lifting provisions

6.20 Keyways

6.21 Frame web/gusset

6.22 Kerb-type gully covers and frames

7 Performance

7.1 Appearance (see BS EN 124‑1:2015, 7.1)

7.2 Loadbearing capacity (see BS EN 124‑1:2015, 7.2)

7.3 Permanent set (see BS EN 124‑1:2015, 7.3)

7.4 Skid resistance

7.5 Child safety (see BS EN 124‑1:2015, 7.5)

8 Testing (see BS EN 124‑1:2015, Clause 8)

9 Assessment and verification of constancy of performance (AVCP) (see BS EN 124‑1:2015, Clause 9)

Bibliography

BS 7903:2020

Selection and installation of manhole tops and gully tops within the highway. Guide

Current

Published:

29 Feb 2020