British Standards Institution

Sector: Construction

Overview: Under the direction of B/525 is responsible for the UK input to CEN/TC 250/SC 1 Eurocode 1991 - Actions on structures and Eurocodes related documents. It also deals with Eurocode 1990 Basis of Design. It also mirrors ISO/TC 98 Bases for design of structures and ISO/TC 98/SC 3 Loads, forces and other actions.

Committee standards activity

In Progress (24)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
UK National Annex to BS EN 1990:2023 Eurocode -	Basis of structural and geotechnical design Categories: Information management \| Standardization. General rules Proposal begins : 2024-04-19	Proposal
UK NA to BS EN 1991-1-2:2024 Eurocode 1 -	Actions on structures - Part 1-2: Actions on structures exposed to fire Categories: Information management \| Standardization. General rules Proposal begins : 2024-04-19	Proposal
PD ISO/TR 21259	Seismic design examples based on ISO 23618 Categories: Unclassified documents Drafting begins : 2025-04-01	Drafting
PD 6688-1-7	Recommendations for the design of structures to BS EN 1991-1-7 Categories: Information management \| Standardization. General rules \| Construction materials and building \| Construction industry \| Technical aspects \| Building structures \| Building structures. General \| Structures. Concrete \| Structures. Other Proposal begins : 2019-07-31	Proposal
NA to BS EN 1990	UK National Annex for Eurocode. Basis of structural design Categories: Information management \| Standardization. General rules \| Construction \| Construction materials and building \| Building structures Proposal begins : 2023-02-10	Proposal
NA BS EN 1991-1-7	National Annex to Eurocode 1. Actions on structures – Accidental actions Categories: Information management \| Standardization. General rules \| Construction \| Construction materials and building \| Construction industry \| Building structures \| Building structures. General \| Structures. Other \| Bridge construction Proposal begins : 2019-07-31	Proposal
NA BS EN 1990	Basis of Structural Design Categories: Information management \| Standardization. General rules \| Construction materials and building \| Construction industry \| Building structures \| Structures. Other \| Construction materials \| Construction materials. General \| Civil engineering Proposal begins : 2019-07-31	Proposal
CEN/TC 250 N 2427,	Revision of EN 1991-2 - Eurocode 1: Actions on structures - Part 2: Traffic Loads on bridges and other civil Engineering works Categories: Information management \| Standardization. General rules \| Engineering \| Construction \| Construction materials and building \| Buildings \| Buildings. General \| Building structures \| Civil engineering \| Bridge construction Proposal begins : 2020-03-04	Proposal
BS ISO 8930	Bases for design of structures- Vocabulary Categories: Unclassified documents Proposal begins :	Proposal
BS ISO 4354	Wind actions on structures Categories: Unclassified documents Drafting begins : 2025-09-08	Drafting

Published (17)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD CEN/TR 17231:2018	Eurocode 1: Actions on Structures. Traffic Loads on Bridges. Track-Bridge Interaction Categories: Technical aspects \| Bridge construction Published standard begins : 2018-08-09	Published standard
PD 6688-1-7:2009+A1:2014	Recommendations for the design of structures to BS EN 1991-1-7 Categories: Technical aspects Published standard begins : 2014-08-20	Published standard
PD 6688-1-4:2015	Background information to the National Annex to BS EN 1991-1-4 and additional guidance Categories: Technical aspects Published standard begins : 2015-12-18	Published standard
NA to BS EN 1991-4:2006	UK National Annex to Eurocode 1. Actions on structures. Silos and tanks Categories: Technical aspects Published standard begins : 2009-11-06	Published standard
NA to BS EN 1991-3:2006	UK National Annex to Eurocode 1. Actions on structures. Actions induced by cranes and machinery Categories: Technical aspects Published standard begins : 2009-08-03	Published standard
NA to BS EN 1991-1-6:2005	UK National Annex to Eurocode 1. Actions on structures. General actions. Actions during execution Categories: Technical aspects Published standard begins : 2008-05-08	Published standard
NA to BS EN 1991-1-5:2003	UK National Annex to Eurocode 1. Actions on structures. General actions. Thermal actions Categories: Technical aspects Published standard begins : 2007-04-16	Published standard
NA to BS EN 1991-1-1:2002	UK National Annex to Eurocode 1. Actions on structures. General actions. Densities, self-weight, imposed loads for buildings Categories: Building structures. General \| Technical aspects Published standard begins : 2006-01-31	Published standard
NA to BS EN 1990:2002+A1:2005	UK National Annex for Eurocode. Basis of structural design Categories: Technical aspects \| Building structures. General Published standard begins : 2009-06-24	Published standard
BS ISO 13033:2013	Bases for design of structures. Loads, forces and other actions. Seismic actions on nonstructural components for building applications Categories: Building structures. General \| Seismic and vibration protection Published standard begins : 2013-08-29	Published standard

Withdrawn (21)

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Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD 6688-1-7:2009	Recommendations for the design of structures to BS EN 1991-1-7 Categories: Technical aspects Withdrawn begins : 2014-08-20	Withdrawn
PD 6688-1-4:2009	Background information to the National Annex to BS EN 1991-1-4 and additional guidance Categories: Technical aspects Withdrawn begins : 2015-12-18	Withdrawn
PD 6688-1-2:2007	Background paper to the UK National Annex to BS EN 1991-1-2 Categories: Fire-resistance. Building materials and elements \| Technical aspects \| Building structures. General Withdrawn begins : 2007-06-25	Withdrawn
NA+A1:15 to BS EN 1991-1-3:2003+A1:2015	UK National Annex to Eurocode 1. Actions on structures. General actions. Snow loads Categories: Technical aspects \| Building structures. General Withdrawn begins : 2018-10-31	Withdrawn
NA to BS EN 1991-2:2003	UK National Annex to Eurocode 1. Actions on timber structures. Traffic loads on bridges Categories: Bridge construction \| Technical aspects Withdrawn begins : 2008-05-28	Withdrawn
NA to BS EN 1991-1-7:2006	National Annex to Eurocode 1. Actions on structures. Accidental actions Categories: Technical aspects \| Structures. Metal \| Bridge construction Withdrawn begins : 2014-07-29	Withdrawn
NA to BS EN 1991-1-4:2005	UK National Annex to Eurocode 1. Actions on structures. General actions. Wind actions Categories: Technical aspects Withdrawn begins : 2011-01-18	Withdrawn
NA to BS EN 1991-1-3:2003	UK National Annex to Eurocode 1. Actions on structures. General actions. Snow loads Categories: Technical aspects \| Building structures. General Withdrawn begins : 2007-06-11	Withdrawn
NA to BS EN 1990:2002	UK National Annex for Eurocode 0. Basis of structural design Categories: Technical aspects \| Building structures. General Withdrawn begins : 2009-06-22	Withdrawn
DD ENV 1991-3:2000	Eurocode 1. Basis of design and actions on structures. Traffic loads on bridges (United Kingdom Application Document) Categories: Technical aspects \| Bridge construction Withdrawn begins : 2003-10-29	Withdrawn

Message Committee Become a committee member

Committee members

Nominating organizations

British Constructional Steelwork Association Ltd
Committee Manager
HSE – Building Safety Regulator
Institution of Civil Engineers
Institution of Structural Engineers
International Masonry Society
Met Office
N H B C - National House-Building Council
N S A I - National Standards Authority of Ireland
National Highways
R S S B - Rail Safety and Standards Board
Steel Construction Institute
The Roof Tile Association
WSP

Liaisons with other committees

Chair - B/525/1/14
Chair - B/525/1/15
Individual Capacity - CEN/TC 250/PT EN 1990 Expert
Individual Capacity - EN 1991-1-6 Expert
Individual Capacity - EN 1991-4 Expert
Individual Capacity - Engineering Expert Balers & Compactors
Individual Capacity - SC 1/WG 4 Fire Expert
Liaison - B/525/5
Liaison - B/549
Liaison - CB/203/-/2
Liaison – CB/502

BSI roles

Committee Chair

Standards Development

B/525/1 - Actions (loadings) and basis of design

Committee standards activity