We invite you to see our video note on three-branch metal cross-sections. You can learn about the features of such truss structures, their advantages, disadvantages, as well as features of modeling and calculation. These types of structures can be modeled via one rod in SP LIRA 10. It, in turn, allows you to make quickly preliminary modeling and calculations with cross-section selection in similar schemes using simplified procedure, as well as fully perform flexibility checks in accordance with the requirements of the standards.