Revised code for maritime works published

Originally launched in 2000, the Maritime Works standard BS 6349-1 is being replaced by four subparts. BS 6349-1-4 gives recommendations for the materials (specifically concrete) used in the design, construction and maintenance of structures in a marine environment.

Significant changes have been made to the concrete section with clauses being updated to align with BS EN 206-1 and BS 8500. An update of the durability requirements in the concrete section has also been included, in respect to minimum cement, type, cover and water/cement ratios for 30, 50 and 100 years design life.

The changes incorporate the latest cement and cement replacements as given in BS EN 197-1:2011 and provide more accurate data for mix designs to achieve adequate durability. BS 6349-1-4 replaces section 7 within BS 6349-1:2000 and is now a stand alone document. Revisions to all sections have been made to bring the text and references up to date with current practices.

Haydn White, chairman of the CB/50 Infrastructure Advisory Committee at BSI said: “The regular updating of standards helps to create better and more efficient practice. This is particularly true for BS 6349 Part 1-4 Maritime works – General – Code of practice for materials, which deals with the vulnerability of concrete structures within seawater environments. The revisions we have made mean durability and efficiency can be improved as well ensuring that Europeans standards are met.”

Key figures within the marine industry such as Oil Companies International Maritime Forum, the Association for Concrete Society, the Institution for Civil engineers and PIANC (The World Association for Waterborne Transport Infrastructure) worked with BSI to develop the standard so that it is relevant to the challenges facing structures in seawater. The BS 6349-1 subparts are of particular use to engineers, designers, contractors, port authorities and government departments who want to improve performance and reduce risk.

The subparts of BS 6349-1 are as follows: BS 6349 -1-1 Code of practice for planning and design for operations (in preparation); BS 6349 -1-2 Code of practice for the assessment of actions (in preparation); BS 6349 -1-3: 2012 Code of practice for geotechnical design; and BS 6349 -1-4: 2013 Code of practice for materials.