Hardy Cross - Hardy Cross Method

Hardy Cross Method

Hardy Cross's description of his method follows: "Moment Distribution. The method of moment distribution is this:

  1. Imagine all joints in the structure held so that they cannot rotate and compute the moments at the ends of the members for this condition;
  2. at each joint distribute the unbalanced fixed-end moment among the connecting members in proportion to the constant for each member defined as "stiffness";
  3. multiply the moment distributed to each member at a joint by the carry-over factor at the end of the member and set this product at the other end of the member;
  4. distribute these moments just "carried over";
  5. repeat the process until the moments to be carried over are small enough to be neglected; and
  6. add all moments – fixed-end moments, distributed moments, moments carried over – at each end of each member to obtain the true moment at the end."

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