Abstract
The flexural strengthening of concrete structures using fiber-reinforced polymer (FRP) composites has gained a great deal of popularity in recent years. Research within the area is now reaching maturity and as a result, several international design guidelines and standards have now been published. This chapter summarizes the basic principles required to undertake the design of FRP flexurally strengthened members. This includes: methods of analysis, failure modes such as FRP debonding, member ductility, FRP anchorage, detailing, and serviceability considerations. Flow charts summarizing the design steps and basic formulations are presented for three different guidelines, namely: AS 5100.8 (2017), ACI 440.2 (2017), and the Concrete Society Technical Report No. 55 (2012). Lastly, worked examples are provided to demonstrate the design of both reinforced and prestressed members.
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