. Railway track and track work . and at too high a proposed modification was to increase the depth of the rail head to enableit to resist bending or crushing down under heavy loads; on the other hand,it was proposed to increase the proportion of metal in the web and base inorder to equalize the cooling during mill operations. In 1907, however, the RAILS. 69 committee decided to prepare modified designs for the heavier sections. TheAm. Soc. C. E. type of section is undoubtedly in general satisfactory, and itis to the manufacture we must look for improvement in quality. A committ
. Railway track and track work . and at too high a proposed modification was to increase the depth of the rail head to enableit to resist bending or crushing down under heavy loads; on the other hand,it was proposed to increase the proportion of metal in the web and base inorder to equalize the cooling during mill operations. In 1907, however, the RAILS. 69 committee decided to prepare modified designs for the heavier sections. TheAm. Soc. C. E. type of section is undoubtedly in general satisfactory, and itis to the manufacture we must look for improvement in quality. A committeeof the American Railway Association in 1907 reported that there was no neces-sity for a radical change in this type of section so far as its relation to thewheel is concerned, but that criticisms are based on an effort to strengthenthe rail by a better disposition of the material, or an effort to so modify thesection as to obtain better results in manufacture. The relation of wheels torails and frogs is discussed in Chapter e£- * — f . SO lbs. Fig. 30.—Sayre Type.
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