JavaScript must be enabled in order to use this site.Please enable JavaScript in your browser and refresh the page. Castellated Beam Design Procedures Methodology used for the design of castellated C-Beamâ„¢. AISC 360 ASD Design Procedure AISC 360 LRFD Design Procedure ASD Design Procedure (9th Edition) LRFD Design Procedure (3rd Edition) Deflection Parent topic: C-Beam Design