. Electric railway journal . t few years the Cincinnati TractionCompany has engaged in a large amount of track rehabilita-tion and construction, as it has approximately 230 miles ofwide-gage track (5 ft. 2y2 in.), of which a large parthas reached the limit of its life under existing traffic con-ditions. Prior to beginning construction on a large scalethe company adopted a standard track design for bothextensions and rehabilitation. It consisted of 140-lb., rail, laid on 6-in. x 8-in. x 8-ft. white oakties and spaced at 2-ft. intervals, the ties being embeddedin 14 in. of 1:
. Electric railway journal . t few years the Cincinnati TractionCompany has engaged in a large amount of track rehabilita-tion and construction, as it has approximately 230 miles ofwide-gage track (5 ft. 2y2 in.), of which a large parthas reached the limit of its life under existing traffic con-ditions. Prior to beginning construction on a large scalethe company adopted a standard track design for bothextensions and rehabilitation. It consisted of 140-lb., rail, laid on 6-in. x 8-in. x 8-ft. white oakties and spaced at 2-ft. intervals, the ties being embeddedin 14 in. of 1:3:7 concrete. This provides a sufficientdepth of concrete to obtain 6 in. or 8 in. of foundationunder the ties and at the same time serves as a base forthe pavement. The paving is granite block laid on a \l/2-in. sand cushion with 1 : 2 sand and cement grout filler. Tie rods were not used in the construction owing to thedifficulty in obtaining workmen who could lay uniformjoints in the pavement around them, and they were re-. Cincinnati Track Construction—Standard 9-in., Rail Track Construction placed by pressed-steel rail braces installed at every fourthtie. These rail braces are spiked independent of the rail,which is fastened to the tie with one spike on the inside andtwo on the outside of the base. A cast-welded joint, 13 length, requiring about 200 lb. of metal, is used in allstandard construction. Iron low in sulphur is specifiedfor these cast joints, and in order to maintain the lowpercentage of sulphur coke is employed as a fuel in themelting process. EXCAVATION The usual procedure in rehabilitating or constructingnew track in paved streets has been carefully to a prearranged program, any section of trackto be rebuilt is given over to the construction department,regular service being either detoured over connecting linesor handled by means of a temporary track laid on thestreet surface. Following the removal of traffic, th
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