. Electric railway journal . odties installed, the old concrete base and steel ties beingleft in place. After a fair stretch of track had been raised it wasblocked to grade ready for installation of a new con-crete base. The latter was then tamped under the newties so as to transfer the bearing directly to the oldtrack base. In the short stretches where full ties couldnot be installed near the run-off points, the top surfacesof the ties were adzed sufficiently to allow the rails toset down to grade and special shortened spikes wereused to fasten the rails. At the run-off points in thegrades th
. Electric railway journal . odties installed, the old concrete base and steel ties beingleft in place. After a fair stretch of track had been raised it wasblocked to grade ready for installation of a new con-crete base. The latter was then tamped under the newties so as to transfer the bearing directly to the oldtrack base. In the short stretches where full ties couldnot be installed near the run-off points, the top surfacesof the ties were adzed sufficiently to allow the rails toset down to grade and special shortened spikes wereused to fasten the rails. At the run-off points in thegrades the rails were simply blocked on the old woodties, which fortunately were found here due to their useunder the special trackwork at the ends of the job. Itwas unnecessary to disturb any original ties whatever,either wood or steel. The original tie rods were leftin place. The city replaced the original granite pavement withsheet asphalt on concrete between the outer rails. Con-sequently the new concrete was brought up to within. One Track Raised Into Position on Wooden Ties 3 in. of the tops of the rail heads. This in turn pro-vides a new concrete base about 16 in. thick under theasphalt pavement surface between ties with the additionof another 6 in. in the old concrete track base, so thereis a total of 21 in. of concrete. Wood blocking of vari-able thickness was used between the old and new tiesand the intervening space was filled in with new con-crete, the average thickness of the concrete being 4in. All of the concrete work was done by the citycontractor. The bar-weld rail joints were found to be in perfectcondition and bid fair to last during the remaininglife of the track. Such of the steel ties as were exposedfor examination were found to be in very good condi-tion. The accompanying views show the general fea-tures of the work. It is thought that this is the firsttime the procedure outlined has ever been the work of raising the tracks and tamping con-crete un
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