This information is necessary for working drawings for trackage described in
Chapter 2, Section 3 as well. The field survey made for replacement track
design shall establish reference marks for the placement of rails. Rails
shall be placed within + 1/4 inch of the designed rail centerline alignment.
Track gage shall be within + 1/2 inch of the design gage. Placement methods
shall be such as not to cause kinks or other sharp changes in the smooth
curvature of the rails.