FLH PDDM Chapter 9 - Eastern Federal Lands Highway Division

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9.4.A. Geometric Design. (continued)The minimum lengths of vertical curves used in design are determined by the following formula:L = AKWhere:L = Minimum length of vertical curve in meters. (Round up to even tens, fifties, orhundreds.)A = Algebraic difference in grade in percent.K = Rate of change of grade (a constant value for a particular design speed and type of sightdistance). Obtain value from Table 9-6.NOTE: For small changes in grade (A) or for small values of (K), the computed lengths of vertical curvesmay be very short. For these conditions, use the minimum lengths specified in Table 9-6 instead of thecalculated length, provided it is longer. When practical, it is desirable to design vertical curves of150 meters or more in length, in order to create a pleasing appearance.9 - 35
Page 2 and 3: TABLE OF CONTENTS9.4 PS&E DEVELOPME
Page 4 and 5: TABLE OF CONTENTS9.4 PS&E DEVELOPME
Page 6 and 7: LIST OF TABLESTablesPage9-1 Design
Page 8 and 9: 9.1.B. Design Standards.B. Design S
Page 10 and 11: 9.1.B. Design Standards. (continued
Page 12 and 13: 9.1.B. Design Standards. (continued
Page 14 and 15: 9.2 GUIDANCE AND REFERENCESThe publ
Page 16 and 17: 9.3 INFORMATION GATHERINGThe design
Page 18 and 19: 9.3.C. Accident Data.C. Accident Da
Page 20 and 21: 9.4.A. Geometric Design. (continued
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Page 64 and 65: 9.4.B. Intersection Design.B. Inter
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Page 68 and 69: 9.4.B. Intersection Design. (contin
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Page 78 and 79: 9.4.C. Earthwork Design. (continued
Page 84 and 85: 9.4.D. Earth Retaining Structures.D
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9.4.D. Earth Retaining Structures.
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9.4.E. Drainage Design. (continued)
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9.4.E. Drainage Design. (continued)
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9.4.F. Other Design Elements. (cont
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9.4.G. Right-of-Way and Utilities.
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9.4.H. Reviews. (continued)(3) The
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9.4.I. Plans. (continued)The respon
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9.4.J. Engineer’s Estimate. (cont
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9.4.K. Specifications. (continued)T
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9.4.K. Specifications. (continued)C
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9.4.K. Specifications. (continued)T
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9.4.K. Specifications. (continued)A
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9.5 APPROVALSFLHM 1-A-2 outlines th
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9.6. Standard Format. (continued)In
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9.6. Standard Format. (continued)3.
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9.6. Standard Format. (continued)Fo
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9.6. Standard Format. (continued)Pr
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9.6. Standard Format. (continued)g.
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9.7 DIVISION PROCEDURESReserved for
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Approval+),.)- There are no excepti
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EXHIBIT 9.38APPROVED STANDARD DRAWI
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EXHIBIT 9.38APPROVED STANDARD DRAWI
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FLH PDDM Chapter 9 - Eastern Federal Lands Highway Division

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