Exhibit 10.13.3

                                 THIRD AMENDMENT

                                       to

                             2000 STOCK OPTION PLAN

                                       of

                           DAYTON SUPERIOR CORPORATION

     Section 2.1(a) of the 2000 Stock Option Plan of Dayton Superior Corporation
(the "Plan") hereby is amended in its entirety, effective as of October 23,
2002, to read as follows:

     "2.1 Shares Subject to Plan.

          (a) The shares of stock subject to Options shall be shares of the
     Company's Common Stock. The aggregate number of such shares which may be
     issued upon exercise of such Options shall not exceed 719,254 as adjusted
     pursuant to Section 8.3. The shares of Common Stock issuable upon exercise
     of such Options may be either previously authorized but unissued shares or
     treasury shares."

     The foregoing amendment to the Plan was approved by the directors of Dayton
Superior Corporation (the "Company") acting at a meeting duly called and held on
October 23, 2002 and shall be submitted to the shareholders of the Company for
approval within 12 months after the date of such meeting.

     Except as expressly set forth above, the Plan is not hereby modified or
amended and shall remain in full force and effect accordance with its terms.

     IN WITNESS WHEREOF, the undersigned has executed this Third Amendment as of
the date first set forth above.

                                          DAYTON SUPERIOR CORPORATION


                                          By: /s/ John A. Ciccarelli
                                             Name: John A. Ciccarelli
                                             Title: Chairman of the Board of
                                                    Directors