. Manual of recommended practice for railway engineering and maintenance of way . CLASS C. Excavation *SPECIFICATIONS FOR THE FORMATION OF THE ROADWAY. RECOMMENDED STANDARD GENERAL. 1. The center of the roadbed shall conform in alinement to thecenter stakes. 2. The grade-line on the. profile denotes subgrade, and this termindicates the top of embankments or the bottom of excavations readyto receive the ballast. 3. The roadbed shall be formed to the sections, slopes and dimen-sions shown upon the standard drawings, or to such modifications thereofas are required to meet specia
. Manual of recommended practice for railway engineering and maintenance of way . CLASS C. Excavation *SPECIFICATIONS FOR THE FORMATION OF THE ROADWAY. RECOMMENDED STANDARD GENERAL. 1. The center of the roadbed shall conform in alinement to thecenter stakes. 2. The grade-line on the. profile denotes subgrade, and this termindicates the top of embankments or the bottom of excavations readyto receive the ballast. 3. The roadbed shall be formed to the sections, slopes and dimen-sions shown upon the standard drawings, or to such modifications thereofas are required to meet special conditions, as may be from time to timedirected. 4. When finished and properly settled the roadbed shall conform Alinement. Subgrade. Cross-section. Widtli ofRoadbed. * Adopted, Vol. 4, 1903, pp. 20-29, 33-35, 78-109; Vol. 5, 1904, pp. 675-684,688, 719; Vol. 6, 1905, pp. 125-136, 143-164. 20 ROADWAY. to the finishing stakes and shall be of the following dimensions at sub-grade, for single track, viz.: On embankments (....) ft. wide, and in excavations ( ) ft. exclusive of the width n
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