The Chain Reaction Contraption Contest (CRCC) is a spirited competition for students in grades 9-12 and is one of the exciting National Engineers Week events. The CRCC fosters an interest in engineering by challenging students to create a machine that will accomplish a specific task using a series of steps. The CRCC is sponsored by Westinghouse Electric Company, and presented in cooperation with the Carnegie Science Center.

The 2018-2019 contest task is to TIE A KNOT! Check out the previous contest page for more information from last year's contest to Weight It!

Under the guidance of an engineer mentor (optional) and a teacher sponsor, teams will:

  • Submit a preliminary design drawing.
  • Submit a series of progress photos that show the machine's evolution.
  • Build a machine that accomplishes the assigned task.
  • Demonstrate their machine and make a verbal presentation.

The 2018-19 CRCC will be held on Friday December 7, 2018 at the Carnegie Science Center. It is on this day that the students will demonstrate their machine and make the verbal presentation.

The CRCC Official Handbook contains background information on the contest. It also contains information on the challenge, rules, important dates and forms. The handbook is available for download on the Forms page.

For more information, to register a team, or to volunteer to serve as a judge or engineering mentor, contact us at

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