February 9, 1998
TO: Holders of the Fifth Edition of the Highway Design Manual
SUBJECT: Errata Sheets for the Highway Design Manual
The California Department of Transportation released the first metric Highway Design Manual as the Fifth Edition on July 1, 1995. Several errors have been identified and the corrections are contained in the attached errata sheets. Please replace the existing pages in your Highway Design Manual with the corrected pages attached. A summary of the corrections are as follows:
Table of Contents
Topic 309 was erroneously titled "Clearances Clearances". It has been corrected to read "Clearances".
Table of Contents
Topic 602 was erroneously titled "Structural Section Design Procedures Structural Section Design Procedures". It has been corrected to read "Structural Section Design Procedures".
Topic 603 was erroneously titled "Traffic Data for Structural Section Design Traffic Data for Structural Section Design". It has been corrected to read "Traffic Data for Structural Section Design".
Index 21.2(1) "Sign Route Numbers"
The first paragraph incorrectly referenced Index 41.2. The correct reference is Index 42.2.
Index 201.6 "Stopping Sight Distance on Horizontal Curves"
The word "italicized" was misspelled as "italized".
Table 201.5A "Stopping Sight Distance on Sag Vertical Curves"
The "K" values at the top of the table were omitted.
Some of the values contained in the column for "S=220 m" were incorrect.
Figure 201.6 "Stopping Sight Distance on Horizontal Curves"
In the table under "sight distance", the symbol "m" was incorrectly used instead of "m" , the abbreviation for meters.
Table 201.6B "Stopping Sight Distance on Horizontal Curves"
The note at the top of the table referring to Section II was incorrect. The correct reference is to Table 201.1.
Figure 204.4 "Vertical Curves"
The first vertical curve formula was incorrect. The right side of the formula has been corrected so that it is divided by the number 800.
Figure 206.3(2) "Pavement Reductions"
The formula "VW" for taper length was incorrect. The correct formula has been corrected to "2/3 VW".
Index 611.5(1) "PCCP Failure Types"
The misspelled word "plane-jointed" has been corrected to "plain jointed".
Index 807.2 "Federal Highway Administration Hydraulic Publications"
HEC No. 15 was incorrectly titled. The word "Roadway" has been corrected to "Roadside".
Figure 819.2C "Regional Flood-Frequency Equations"
In several locations through out this figure the notes referenced were incorrect.
Index 834.2(3) "Median Drainage"
Index 871.4 was incorrectly referenced. The correct reference is Index 871.3.
Index 854.3(2)(c) "Corrugated Steel Pipe and Pipe Arches"
The last bullet of this section incorrectly references Table 854.4B. The correct reference is Table 854.4C.
Index 903.5(3)(d) "Facilities and Features"
Index 608.8 was incorrectly referenced. The correct reference is Index 608.7(1).
Figure 1003.1E "Stopping Sight Distances for Crest Vertical Curves"
The first formula at the top of the figure was incorrect. The number "25" has been corrected to read "2S".
If you identify any additional errors in the manual please contact your Geometric Reviewer or Karla Sutliff, Highway Design Manual Editor, at (916) 653-5107 or CALNET 8-453-5107.
JERRY CHAMPA, Chief
Office of State Geometric Design Standards
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