BS 5975 2019 Extract - Flipbook - Page 7
BRITISH STANDARD
BS 5975:2019
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 May 2019. It was prepared by Subcommittee
B/514/26, Falsework, under the authority of Technical Committee B/514, Access and support
equipment. A list of organizations represented on these committees can be obtained on request to
its secretary.
Supersession
This British Standard supersedes BS 5975:2008+A1:2011, which is withdrawn.
Information about this document
This is a revision of Section 1 and Section 2 of this British Standard. Section 3 on the permissible
stress design of falsework remains unchanged. The following principal changes have been introduced
in this revision.
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BS 5975 was always intended to be used by all organizations involved in temporary works
and provided details of the procedure for contractors to adopt, but lacked detail about the
procedures for clients, permanent works designers and temporary works designers to adopt.
The detail on these procedures is now included.
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The text has been updated to take account of the Construction (Design and Management)
Regulations 2015 (CDM) [1], particularly in respect to the interface between the design of
permanent works and the design of temporary works.
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The terms and definitions have been updated.
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The principal contractor9s temporary works co-ordinator (PC's TWC) retains overall
responsibility for the temporary works on the site, but where another contractor manages their
own temporary works within that site, they have their own procedures and appoint their own
TWC. The committee understood that some organizations were using the temporary works
supervisor (TWS) of sub-contractors to act as de-facto TWCs but this is incorrect and the text has
been changed to reflect this.
Section 2 has been updated to include recommendations for designers on the partial factors to
be used in limit state design of temporary works and on design considerations to be applied for
all temporary works design.
Although a full revision of Section 3 has not been undertaken at this point, an important safety
point was brought to the committee9s attention and a relevant note has been added in 16.3.5.
The following matters, from the partial revision in 2011, were re-considered and it was confirmed
they were to be retained in this revision.
The European standard on falsework, BS EN 12812, exists in parallel with this British Standard. It
specifies performance requirements for the design of falsework in accordance with one of three
classes: A, B1 and B2. Limit state design methods are specified for design classes B1 and B2. It does
not provide guidance for the structural design of Class A. It is recommended that Section 3 is used to
provide guidance for Class A falsework.
BS EN 12812 does not provide guidance on procedures necessary for the successful management of
work on site. The recommendations of the Advisory Committee on Falsework (the Bragg Report [2])
in respect of the temporary works co-ordinator have not been included in BS EN 12812.
© THE BRITISH STANDARDS INSTITUTION 2019 3 ALL RIGHTS RESERVED#VII
