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4«9*5«(November f 1983)The contractor should submit to the Engineerfor approval full details and calculations for theproprietary "bearings he proposes to use® The detailsprovided should fully describe and illustrate installationof the proposed "bearings in the structure®The contractors choice should be limited toproprietary bearings offered by suppliers in the"Bearings for Highway Structures 11 category of theLands and Works List of Suppliers and SpecialistContractors for Materials and Works* Suppliers in thiscategory are listed in Appendix 4®9®1® Details of someof the bearings they can supply are given in Appendix4*9«3© Other bearings from the manufacturers representedby the listed suppliers are acceptable subject tosatisfactoiy test results©Applications from other suppliers forinclusion in the sf Bearings tf category should be passedto G.E«H*/Str* D* for processing*It should be noted that bearings which do notcomply with BS 5400 s Parts 9*1 and 9*2 in all respectsmay be acceptable provided they comply with anotheracceptable national standard*4*9*6 TestingAll laminated elastomeric bearings shouldbe tested for stiffness in compression and shear*All bearings other than elastomeric bearings should betested with a vertical proof load and a horizontalproof load* Other testing should be carried out on ascale appropriate to the particular circumstances.The number of elastomeric bearings ordered fora project should be sufficient to allow for all kindsof testing, including destructive tests*