PD 6688-1-1:2011

BSI Standards Publication

PUBLISHED DOCUMENT

Recommendations for the

design of structures to
BS EN 1991-1-1

This publication is not to be regarded as a British Standard.

PD 6688-1-1:2011 PUBLISHED DOCUMENT

Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document
was last issued.
© BSI 2011
ISBN 978 0 580 47959 5
ICS 91.010.30; 91.080.01
The following BSI references relate to the work on this standard:
Committee reference B/525/1

Publication history
First published May 2011

Amendments issued since publication

Date Text affected
PUBLISHED DOCUMENT PD 6688-1-1:2011

Contents
Foreword ii
Introduction 1
1 Scope 1
2 Imposed loads on floors for areas of industrial use and other work area
use 1
3 Vertical loads on partition walls and parapets 1
4 Uniformly distributed and concentrated loads applicable to infills for walls
and parapets 1
Bibliography 4
List of tables
Table 1 – Imposed loads on floors for areas of industrial use and other work
area use 2
Table 2 – Uniformly distributed and concentrated loads applicable to infills for
walls and parapets – To be read with BS EN 1991-1-1:2002, Table NA.8 3

Summary of pages
This document comprises a front cover, an inside front cover, pages i to ii,
pages 1 to 4, an inside back cover and a back cover.

© BSI 2011 • i
PD 6688-1-1:2011 PUBLISHED DOCUMENT

Foreword
Publishing information
This Published Document has been prepared by BSI Subcommittee B/525/1. It is a
background paper that gives non-contradictory complimentary information for
use in the UK with the Eurocode BS EN 1991-1-1:2002 and its UK National
Annex.
This Published Document is published by BSI and came into effect on 31 May
2011. It was prepared by Subcommittee B/525/1, Actions (loadings) and basis of
design, under the authority of Technical Committee B/525, Building and civil
engineering structures. A list of organizations represented on this committee
can be obtained on request to its secretary.

Relationship with other publications

This Published Document is a background paper that gives non-contradictory
complimentary information for use in the UK with BS EN 1991-1-1:2002 and its
UK National Annex.

Use of this document

As a guide, this Published Document 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 Published Document is expected to be
able to justify any course of action that deviates from its recommendations.

Presentational conventions
The provisions in this Published Document 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.
The word “should” is used to express recommendations of this Published
Document. The word “may” is used in the text to express permissibility, e.g. as
an alternative to the primary recommendation of the clause. The word “can” is
used to express possibility, e.g. a consequence of an action or an event.
Notes and commentaries are provided throughout the text of this Published
Document. Notes give references and additional information that are important
but do not form part of the recommendations. Commentaries give background
information.

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 Published Document cannot confer immunity from legal
obligations.

ii • © BSI 2011
PUBLISHED DOCUMENT PD 6688-1-1:2011

Introduction
When there is a need for guidance on a subject that is not covered by the
Eurocode, a country can choose to publish documents that contain
non-contradictory complimentary information that supports the Eurocode. This
Published Document provides just such information and has been cited as a
reference in the UK National Annex to BS EN 1991-1-1:2002.

1 Scope
This Published Document is a background paper that gives non-contradictory
complementary information for use in the UK with BS EN 1991-1-1:2002 and its
UK National Annex.
This Published Document gives non-contradictory complementary information
relating to imposed loads on floors for areas of industrial use and other work
area use.

2 Imposed loads on floors for areas of industrial

use and other work area use
BS EN 1991-1-1:2002, 6.3.2.2 does not specify values for imposed loads on floors
for areas of industrial and other work area use (i.e. category E2 from
BS EN 1991-1-1:2002, Table 6.3).
However, BS EN 1991-1-1:2002, 6.1 (4) does state that loads for heavy equipment
(e.g. in communal kitchens, radiology rooms and boiler rooms) should be agreed
between the client and/or the relevant authority.
In the absence of such agreement, the minimum imposed loads given in Table 1
may be used for category E2 loaded areas.

3 Vertical loads on partition walls and parapets

BS EN 1991-1-1:2002, 6.4 does not specify values for vertical loads on parapets.
The following guidance may be used.
For all types of activities given in Table NA.8, the parapets, should be designed
for a vertical load. This vertical load should be either a concentrated load of
1 kN or a uniformly distributed load of 0.6 kN/m, whichever gives the worst
design condition in combination with the recommended horizontal loading of
Table NA.8. This combination of loads should be taken into account in the
design of relevant elements of the structure that support the parapets.

4 Uniformly distributed and concentrated loads

applicable to infills for walls and parapets
BS EN 1991-1-1:2002, 6.4 does not specify values for vertical loads on parapets.
The following guidance may be used.
The uniformly distributed line loads give in BS EN 1991-1-1:2002, Table NA.8 and
the uniformly distributed and concentrated loads applicable to the infill are not
additive and should be considered as three separate load cases.

© BSI 2011 • 1
PD 6688-1-1:2011 PUBLISHED DOCUMENT

Table 1 Imposed loads on floors for areas of industrial use and other work area use

Category of loaded Examples of specific use qk Qk

area kN/m2 kN

E2 (industrial use) Communal kitchens except those 3,0 4,5

covered by occupancy class A in
Table NA.3
Operating theatres, X-ray rooms, 2,0 4,5
utility rooms
Work rooms (light industrial) 2,5 1,8
without storage
Kitchens, laundries, laboratories 3,0 4,5
Rooms with mainframe computers 3,5 4,5
or similar equipment
Machinery halls, circulation spaces 4,0 4,5
therein
Cinematographic projection rooms 5,0 To be
determined for
specific use
Factories, workshops and similar 5,0 4,5
buildings (general industrial)
Foundries 20,0 To be
determined for
specific use
Catwalks – 1,0 at 1 m
centres
Fly galleries (i.e. access structures 4,5 kN/m run –
used in theatres to hang scenery, distributed
curtains, etc.) uniformly over
width
Ladders – 1,5 rung load

2 • © BSI 2011
 Table 2 Uniformly distributed and concentrated loads applicable to infills for walls and parapets – To be read with BS EN 1991-1-1:2002,
Table NA.8

Category of loaded Sub- Examples A uniformly A point load

area category distributed load applied to a part of
applied to the infill the infill
kN/m2 kN
A (i) All areas within or serving exclusively one dwelling including 0,5 0,25
(including stairs, landings etc but excluding external balconies and edges
sub-categories in Table of roofs [see (vii)]
NA.2) (ii) Residential areas not covered by (i) 1,0 0,5
PUBLISHED DOCUMENT

B and C1 (iii) Areas not susceptible to overcrowding in office and institutional 1,0 0,5
(including buildings, reading rooms and classrooms including stairs
sub-categories in Table (iv) Restaurants and cafes 1,5 1,5
NA.2)
C2, C3, C4 and D (v) Areas having fixed seating within 530 mm of the barrier, 1,5 1,5
(including balustrade or parapet
sub-categories in Table (vi) Stairs, landings, balustrades, corridors and ramps 1,0 0,5
NA.2)A) (vii) External balconies and edges of roofs 1,0 0,5
Footways within building curtilage and adjacent to
basement/sunken areas
(viii) All retail areas 1,5 1,5
C5 (ix) Footways or pavements less than 3 m wide adjacent to sunken 1,5 1,5
(including areas
sub-categories in Table (x) Theatres, cinemas, discotheques, bars, auditoria, shopping malls, 1.5 1,5
NA.2) assembly areas, studios. Footways or pavements greater than
3 m wide adjacent to sunken areas
(xi) Grandstands and stadia See requirements of the appropriate
certifying authority
E (xii) Industrial; and storage buildings except as given by (xiii) 1,0 0,5
(including and (xiv)
sub-categories in Table (xiii) Light pedestrian traffic routes in industrial and storage buildings 0,5 0,25
NA.4) except designated escape routes
(xiv) Light access stairs and gangways not more than 600 mm wide N/A N/A
F and G (xv) Pedestrian areas in car parks including stairs, landings, ramps, 1,5 1,5
edges or internal floors, footways, edges of roofs
(xvi) Horizontal loads imposed by vehicles See BS EN 1991-1-1:2002, Annex B

© BSI 2011
•
A)
For areas where large crowds might occur, see C5.

3
PD 6688-1-1:2011
PD 6688-1-1:2011 PUBLISHED DOCUMENT

Bibliography
For dated references, only the edition cited applies. For undated references, the
latest edition of the referenced document (including any amendments) applies.
BS EN 1991-1-1:2002, Eurocode 1: Actions on structures – Part 1-1: General
actions – Densities, self weight, imposed loads for buildings
NA to BS EN 1991-1-1:2002, UK National Annex to Eurocode 1: Actions on
structures – Part 1-1: General actions – Densities, self weight, imposed loads for
buildings

4 • © BSI 2011
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