What are the common methods for determining the proposed strut width in structural analysis software?
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The common methods for determining the proposed strut width in structural analysis software include: assuming the effective depth to be 0.9 of the overall depth of the beam, using moment equilibrium, assuming the width of the node at the bottom to be a specific value, and using a new proposed method. These methods were analyzed in a study by Uy and Son, where 106 selected samples were used to compare the total steel requirement. The study concluded that the easiest method would be a good choice for time-saving calculations . Another proposal for determining the strut-and-tie models of reinforced concrete plane members is using discrete topology optimization, which involves the truss system for calculation of the stress-strain state of a real member. This proposal was presented by Starčev-Ćurčin et al., and they developed a program called "ST method" for automatically determining the final shape of the Strut-and-Tie model and the required amount of reinforcement .
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