1. | Define the boundaries of the D-Region and determine the boundary forces (the ultimate design forces) from the imposed local and sectional forces. |
2. | Sketch the truss, determine the equivalent boundary forces, and solve for the truss member forces. |
3. | Select reinforcing or prestressing steel to provide the necessary tie capacity and ensure that this reinforcement is properly anchored in the nodes. |
4. | Evaluate the dimensions of the struts and nodes such that the capacity of all struts and nodes is sufficient to carry the truss member forces. |
5. | Provide distributed reinforcement to ensure ductile behavior of the D-Region. |
Figure 1 The Major Steps in STM Design Process
Credits: http://dankuchma.com/stm/STM/
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