Concrete structures are subject to permanent contraction movements due to shrinkage and creep of concrete, transient movements arising from temperature and humidity effects, and application of external loading. CPN 24 Design of Joints in Concrete Structures has been under extensive review for several years and is now re-published. It provides guidance to designers on the mechanisms and behaviour of different joint types and their proper design and detailing.Calculation of movement within joints allows determination of joint location and spacing. Details of weatherproof joint types for precast concrete facades to buildings together with guidance on design for fire resistance and sealant selection completes this much needed current practice document.

CIA CPN24-2005