PDDM Archived Transmittal Letters

The PDDM was first published in 1988 in English units. It was re-released in 1996 as a Metric document. Beginning in 2005 the document was published with dual units.

Version Portions Updated
2018 Edition Chapter 1
Transmittal 16 (2014) Chapter 10
Transmittal 15 (2014) Chapters 1, 3, 4, 6, 7, 9, 12, plus formatting changes to remaining chapters
Transmittal 14 (2008) Entire manual, new Chapter 11 & 12
Transmittal 13 (2005) Entire manual
Transmittal 12 (2000) Chapter 7 and Section 9.4.I
Transmittal 11 (1998) Chapter 8
Transmittal 10 (1998) Exhibit 9.38 (Standard Drawings), no PDDM Changes
Transmittal 9 (1997) Exhibit 9.38 (Standard Drawings), no PDDM Changes
Transmittal 8 (1997) Exhibit 8.3
Transmittal 7 (1996) Entire manual
Transmittal 6 (1994) Section 9.6 and Exhibits 9.22A to 37
Transmittal 5 (1994) Section 7.4.5 and Exhibit 7.10
Transmittal 4 (1994) Section 9.4.I.2 and Exhibits 9.21 & 31
Transmittal 3 (1993) Subsection 1.1.C
Transmittal 2 (1991) Section 8.4.H.3
Transmittal 1 (1988) Entire manual

See also the current PDDM Revision Log.