From 1992, Parts 1 and 2 of the Proceedings split into 5 parts: Civil engineering; Municipal engineer; Structures and buildings; Transport; and Water, maritime and energy; and from 1994, a 6th part: Geotechnical engineering
Numbering
Volume numbering shared with Part 2 of the Proceedings. Even numbers only
Issuing Body
Later published for the Institute by Thomas Telford