National Structural Concrete Specification



Foreword

The Third Edition of the National Structural Concrete Specification for Building Construction (NSCS) has been

prepared to provide a revised Section 4 - Concrete and concreting in accordance with BS 8500: Concrete Complimentary British Standard to BS EN 206-1 and BS EN 206: Concrete - Specification, performance production and conformity. It is needed because the ready-mixed concrete industry changed from using BS 5328 - Concrete to using BS 8500 on 1st December 2003. BS 5328 was then withdrawn and there was no overlap period when both standards were in use. The change from using BS 5328 - Concrete to using BS 8500 by the ready-mixed industry on 1st December 2003 meant that a need exists for specification to the new standard. It was felt that a further edition of the NSCS was required at this stage to cater for the introduction of European standards and terminology. Apart from Section 4 of the Standard Specification (Part 1), Project specification (Part 2) and the Guidance Notes the rest of the edition is as the Second Edition. The review panel for the specification expect to produce a fourth edition co-ordinated with other Eurocodes when they are all available - in this edition comments and feedback on the use of the second and third editions will be incorporated throughout the specification. The NSCS still has the same objectives as a definitive, simple and straightforward specification without

unnecessary constraints. This is seen as essential in the drive to increase efficiency in the construction of concrete buildings whilst maintaining or improving their quality.

The NSCS is arranged in two parts; Part 1, Standard specification, and Part 2, Project specification, together with Guidance notes covering both parts. The Guidance Notes do not form part of the formal construction specification.

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