Prestressed concrete sleepers, types E.4 and F.7 performance of fastenings in service with particular reference to the cast-in rubber plugs and polythene ferrules (E-403)

Following reports of mechanical troubles with C.S.1.S. and similar assemblies on concrete sleepers, a number of lengths of track of this type have boon inspected. Deformed plugs, broken screws and worn ferrules have been found in relatively new track, and photographs revealing their condition are given. An appraisal...