Concrete sleepers designs of class F strength 8ft- in long, for use with flat bottom rails and cast iron baseplates with mills C clip fastenings (E-219)

Plat bottom rails have been installed by British Railways on concrete sleepers without baseplates, during the last 5 years. A pad only has been used between the rail and sleeper and various forms of clip and spike fastenings have been used with either rubber, or rubber and spring steel,...