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(Sbvember, 1983)Experience has shown that the installation ofmovement joints aid proprietary expansion joints is atleast as important as f and possibly more important than tthe design of the joint itself* The practice of leavinginstallation of proprietary expansion joints to maincontractors has proved to be very unsatisfactory f andresponsibility for installation should'now always beassigned to suppliers® Failure on the part of suppliersfully to accept responsibility for installing theirjoints satisfactorily should be reported to C*E«H®/Str. D«so that consideration can be given to removing suchsuppliers from the Lands and Works List«Installation of most proprietary expansion jointsconsists of several operations f including(a) preparation of seating;(b) installation of holding down arrangements;(c) provision of bedding;(d) fixing of joint;(e) provision of backing^Execution of mo^t of these operations can "bemade more effective if at the design stage thought isgiven to accessibility! working space and so on®Ebtpansion joint installations are usually made at theends of concrete members, where simplicity of formworkproduces better results than more complex arrangements*Hooks and bends of reinforcement tend to be concentratedat such points by designers f more from lack of thoughtthan necessity; the possibility of "bond and anchorageconsiderations permitting reinforcement t® be stoppedoff'well away from an expansion joint installation shouldaways be investigated, because many expansion jointfailures have arisen through holdings-down bolts notbeing properly accommodated among unnecessarily congestedunderlying reinforcement« The vertical faces ofrecesses in concrete decks for expansion joints shouldpreferably be foiraed by saw cutting*