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  • Ernst & Sohn

15. August 2013

Design for service life: implementation of fib Model Code 2010 rules in the operational code ISO 16204

Technical Paper from Structural Concrete 01/2013

Author: Steinar Helland

CEB/FIP Model Code 1990 (MC-1990) did represent the technology and focus some 20 years ago. However, it soon became evident that the document had some notable lacunas. In 1995 the general assemblies of the two organizations endorsed CEB/FIP bulletin No. 228, extensions to MC 1990 for high-strength concrete, and in 2000 a similar extension to MC 1990 for lightweight aggregate concrete as bulletin No. 4. The fib approved bulletin No. 34 Model Code for Service Life Design (MC SLD) in 2006.

All these three additions have since matured and are now incorporated in the new fib Model Code for Concrete Structures 2010 (MC-2010).

The main purpose of an fib Model Code is to act as a model for operational standards. The obvious counterpart for a body such as fib operating worldwide is ISO. The initiative taken by MC SLD has therefore further matured in ISO TC-71/SC-3/WG-4 and it was accepted as ISO 16204 “Durability – Service Life Design of Concrete Structures” during the summer of 2012. According to the obligations given in the WTO Agreement on Technical Barriers to Trade, it is hoped that these principles will be further implemented in national and regional standards.

This article describes the need for a transparent methodology when dealing with service life design, and the process – originating from a group of enthusiasts one decade ago – through fib and finally reaching international consensus in ISO.