FP-96 English Version - Eastern Federal Lands Highway Division

Section 212.) LINEAR GRADINGDescription212.01 This work consists of constructing roadbeds within the specified alignmentand grade tolerances.Construction Requirements212.02 Roadway Preparation. Clear the area of vegetation and obstructionsaccording to Sections 201 and 203.212.03 Roadway Excavation and Embankment. Construct the roadbedsaccording to the applicable requirements of Section 204 except as modifiedherein.Adjust the moisture content of embankment material to a moisture contentsuitable for compaction. Place embankment material in 12-inch layers andcompact each layer according to Subsection 204.11(a). Where compactingwith rollers is not practical, use approved mechanical or vibratory compactionequipment.Construct approach connections to all existing roads, parking areas, and trails.Construct all new approaches.212.04 Grading Tolerance. Do not encroach on stream channels, impactwetlands, or extend beyond right-of-way or easement limits. Do not makealignment or profile grade adjustments that adversely affect drainage. Constructthe roadbed within the following grading tolerances:(a) Alignment (centerline). Alignment may be shifted a maximum of 10feet left or right of the planned centerline. Curve radii may be reduced byup to 50 percent. Do not construct curves with radii less than 100 feet.Compound curves are permitted.(b) Profile grade. Profile grade may be shifted a maximum of 5 feet up ordown from the plan elevation provided the new grade tangent does not varymore than 2 percent from the plan grade tangent. Connect revised forwardand back grade tangents with a uniform vertical curve consistent with thedesign.147