Seismic Committee

Committee Chairs:
Rob Jackson., Phone: 303-870-9334, Email:

To assist SEAC members with issues related to seismic analysis and design in Colorado, and to represent committee consensus in national code development processes.

If you are interested in joining our committee and want to be added to the mailing list, contact us!

2018 Febr 15_Minutes

We hope to facilitate more ATC-20 training in conjunction with the SEER Committee. Next training opportunity is October 13 at CU Boulder.

Link to CGS:

The CEHMC meetings are held on the third Thursday of every other month in at the offices of TetraTech. Any interested parties are welcome to attend the meetings. Next meeting is Thursday, November 21, 2019.

Link to CEHMC:

Committee Updates

During 2019 we have been reviewing the Building Seismic Safety Council Member Organization ballots in support of ASCE 7 code development and review. Ballot 2 is complete. The files for Ballot 3 are now uploaded to the SEAC website under Seismic Standards - MO Ballot 3. In order to access the files on this website go first to Resources, then File Archives and then Seismic Standards - MO Ballot 3.

Our votes and comments on Ballot 3 should be submitted by the end of October. At least one in-person meeting will be scheduled during October 2019 and possibly another phone meeting in support of this balloting process. Meeting times and locations are to be determined. Meetings will likely be at AECOM, 6200 S. Quebec, Greenwood Village, Mt. Belford Conference Room.

The City and County of Denver is currently in the process of adopting the 2018 International Building Code with Denver Amendments. The SEAC Denver Building Department Liaison Committee has again assisted Denver with amendments regarding structural engineering. The Seismic Amendments are again included, basically the same as in past years, but with additional  documentation and bibliography added by Rob Jackson, who is also a member of the Denver committee. Link to the proposed Amendments are given below. The amendments passed the Technical Advisory Committee by a unanimous vote on September 12.