JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. D1.I.1. American Transmission Tower Code - Steel Design per ASCE 10-97 STAAD.Pro is capable of performing steel design based on the American Transmission Tower code ASCE 10-97 Design of Latticed Steel Transmission Structures. D1.I.1.1 General Comments D1.I.1.2 Allowable Stresses per ASCE 10-97 D1.I.1.3 Critical Conditions used as criteria to determine Pass/Fail status D1.I.1.4 Design Parameters D1.I.1.5 Code Checking and Member Selection Parent topic: D1.I. American Codes - Steel Design per ASCE Transmission Tower Codes