BS 5975 2019 Extract - Flipbook - Page 10
BS 5975:2019
BRITISH STANDARD
Section 1: General
1 Scope
This British Standard gives recommendations and guidance on the procedural controls to be
applied to all aspects of temporary works in the construction industry. It also includes guidance on
design, specification, construction, use and dismantling of falsework. This standard gives guidance
on permissible stress design of all falsework. The guidance also applies to the design of class A
falsework1 defined in BS EN 12812, the design of which is specifically excluded from BS EN 12812.
Section 1 gives recommendations in relation to training and education.
Section 2 gives recommendations for procedures to ensure that temporary works are conceived,
designed, specified, constructed, used and dismantled all in a safe and controlled manner suitable for
all construction projects. These procedures include clauses relating to all roles involved in temporary
works: clients, permanent works designers, temporary works designers, contractors (including
construction management organizations), suppliers and manufacturers.
Construction sites and methods adopted for controlling the temporary works vary. This British
Standard recognizes that the extent of control measures required are greater on the larger or more
complex projects, as can be encountered on major infrastructure projects, power stations, airports
etc. Generally procedures are to be in accordance with this standard but additional client specific
procedures might be required on major infrastructure projects.
Section 3 covers the design of temporary works and in particular the design of falsework and relevant
formwork. In addition Section 3 covers: materials including material factors; loads and load factors;
design of falsework, including both proprietary equipment and traditional scaffolding solutions; wind
loading (reference to temporary and permanent stability) and reference to other British Standards
for the design of structural steelwork, reinforced concrete and excavation support. Although Section 3
was written for permissible stress design, the design concepts and the service loads stated are
applicable to limit state design. The loads, including wind loads, are the unfactored service loads and
conform to both BS EN 1991-1-4 and BS EN 12812.
The structural design element in this British Standard is additional information necessary for the
structural design of falsework. It can be used in conjunction with existing structural standards.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes provisions of this document. For dated references, only the edition cited
applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.2
BS 449-2:1969 (withdrawn), Specification for the use of structural steel in building 4 Part 2:
Metric units
BS 648 (withdrawn), Schedule of weights of building materials
1
2
BS EN 12812 states that design class A is only to be adopted where: a) slabs have a cross-sectional area not exceeding 0.3 m2 per metre
width of slab; b) beams have a cross-sectional area not exceeding 0.5 m2; c) the clear span of beams and slabs does not exceed 6.0 m; d) the
height to the underside of the permanent structure does not exceed 3.5 m.
As Section 3 has not been updated as part of this revision, it refers to some standards which have now been withdrawn. These have been
marked as such.
2#© THE BRITISH STANDARDS INSTITUTION 2019 3 ALL RIGHTS RESERVED
