Also discover BS 5975-1:2024 here.
What is BS 5975-2 – Falsework design and implementation about?
The second of two standards on temporary works, BS 5975-2:2024 deals with all aspects of falsework used in construction.
Who is BS 5975-2 – Falsework design and implementation for?
- temporary works designers;
- temporary works coordinators (TWC);
- suppliers;
- manufacturers; and
- construction contractors.
What does BS 5975-2 – Falsework design and implementation cover?
BS 5975-2:2024 gives recommendations and guidance on design, specification, construction, use and dismantling of falsework. It includes guidance on permissible stress and limit state design of all falsework.
The guidance also applies to the design of class A falsework defined in BS EN 12812, the design of which is specifically excluded from BS EN 12812.
BS 5975-2:2024 covers the design of falsework and associated formwork and can be applied to the design of other temporary works. It also covers:
- materials including material factors;
- safety and load factors;
- analysis and 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.
NOTE: Although it was originally written for permissible stress design, the design concepts and the loads stated are also applicable to limit state design and may be taken as the characteristic values.
The loads, including wind loads, are the unfactored loads and conform to both BS EN 1991-1-4 and BS EN 12812
Why should you use BS 5975-2 – Falsework design and implementation?
- The latest guidance. BS 5975-2:2024 is the first full revision of content on the design of falsework since 2008 and as such reflects the latest knowledge and techniques.
- Clarity. BS 5975-2:2024 gives common industry guidance on falsework design and implementation in a practical and understandable manner, bridging between the complexities of Eurocode design processes and commonly used “safe working load” (i.e. permissible stress) approaches found in the UK construction industry.
- Safety. BS 5975-2:2024 gives trustworthy guidance that controls falsework operations effectively, maintaining safety and reducing the likelihood of significant collapses.
- Efficiency. The guidance in BS 5975-2:2024 can help streamline construction, eliminate incidents and reduce delays. It can also optimize the design and construction of falsework to minimize material and labour costs.
- Compliance. To make life simpler, the standard ensures that falsework is planned, managed and monitored in accordance with Construction (Design and Management) Regulations.
- Expertise. The recommendations and guidance in BS 5975-2:2024 are up-to-date and will help users to develop their expertise in falsework design and construction.
- Trustworthiness. It can help organizations demonstrate their commitment to safety to staff, clients and other stakeholders, thereby increasing trust which helps with everything from recruitment and retention to bidding, brand identity and marketing.
- Risk management. BS 5975-2:2024 helps users to identify, assess and mitigate potential risks.
What’s new about BS 5975-2:2024?
This standard, together with BS 5975-1:2024 replaces BS 5975:2019 which has been split into two parts to increase usability, with Section 1 and Section 2 published as BS 5975-1:2024 and Section 3 being published as BS 5975-2:2024. The following principal changes have been introduced in Part 2:
- the terms and definitions have been updated;
- the presentation of the information has been re-ordered in clause 5.0;
- design in accordance with limit state philosophy has been included;
- design in accordance with permissible stress philosophy has been retained and revised;
- the maximum wind forces are calculated on a likely duration of erection of one year (formerly two years) with a ten-year return period;
- information on effect of wind with adjacent tall structures, funnelling effects of terrain/buildings and guidance on susceptibility to vortex shedding are included;
- the structural design of Class A falsework has been revised to include limit state methods;
- simplified methods for derivation of loads (actions) have been retained and revised, e.g. wind loads;
- methods of analysis for top restrained, partially braced or fully braced systems have been retained and revised;
- permissible stress design of falsework has been retained and revised;
- increased factors for use in the design of members when simplified methods are used have been retained and revised;
- the method of calculating the percentage of load transfer through flat slabs as back-propping has been revised.
