. Railroad structures and estimates . newal. Cost of tie (increased value) Remainder as above Interest 5 per cent (compound) yr. 1 0361,014 Second of tie (increased value) lOyr. 146 Cost of tie in 24 years $ $ $ Cost of tie per annum Steel Ties. -^ A great deal of attention has been given duringthe past few years to finding a substitute for wood ties, and manydesigns of steel, concrete, and composite ties are being tried out,and the steel tie has been the
. Railroad structures and estimates . newal. Cost of tie (increased value) Remainder as above Interest 5 per cent (compound) yr. 1 0361,014 Second of tie (increased value) lOyr. 146 Cost of tie in 24 years $ $ $ Cost of tie per annum Steel Ties. -^ A great deal of attention has been given duringthe past few years to finding a substitute for wood ties, and manydesigns of steel, concrete, and composite ties are being tried out,and the steel tie has been the most successful so far. The type that has been used chiefly is known as the CarnegieSteel Tie, illustrated herewith, and for which a number of differentweights of sections are given in Table 90a. These are made up insections varying in weight from 20 to lbs. per foot. The rolledsteel plates and fastenings are not included in the weights andhave to be added when making up the cost figures. STEEL TIES. 183 100 lb. Inside. FASTENINGS FOR ST;Carnegie Steel Co. Section M-28 Z^W V
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