Definitions and Requirements

Conversion Tables

Standard Specifications: The standard set of specifications published in book form. They are currently published in a 2009 Series, Dual Unit version.

General Supplemental Specifications (GS): Revisions to the Standard Specifications Books, published in 8 1/2" x 11" format, once every 6 mo. in April and October.

On this site, the General Supplemental Specification revisions have been incorporated into the Standard Specification text in the Electronic Reference Library (ERL) (see "Electronic Reference Library (DOT Publications)" page of this site to access the ERL.

GSs are numbered in this fashion:

  • GS-09001, GS-01001, GS-97009 and GS-95009M.
  • GS = General Supplemental
  • 09, 01, 97, or 95 = year/issue of the standard specification book being modified
  • 001 or 009 = the identifying number of the specification, and M = metric version.

Supplemental Specifications (SS): Specifications for particular bid items not contained in the Standard Specification books, or which modify those contained in the Standard Specifications. These may be applied to any project requiring this bid item.

Developmental Specifications (DS): The DS is a hybrid of an SS and an SP. It is reusable, but will be assigned to particular projects. The DS will maintain the same DS number until it needs to be modified. Then it will get a new number and changes will be included in redline and strikeout in the same manner as an SS.

Special Provisions (SP): Specification provisions for specific work items applicable to an individual project only.