Section Number | 
                                                                        N/A MC18 | 
                                                                                Weight Per Foot | 
                                                                        N/A 51.9 lb | 
                                                                                Section Depth A | 
                                                                        N/A 18.00 in | 
                                                                                Flange Width B | 
                                                                        N/A 4.125 in | 
                                                                                Flange Thickness C | 
                                                                        N/A 0.625 in | 
                                                                                Web Thickness D | 
                                                                        N/A 0.600 in | 
                                                                                Available Length | 
                                                                        N/A Up to 60 ft | 
                                                                                Industry Standards | 
                                                                        N/A American Society for Testing and Materials (ASTM) A36 American Society for Testing and Materials (ASTM) A529-50 American Society for Testing and Materials (ASTM) A572-50 American Society for Testing and Materials (ASTM) A709 American Society for Testing and Materials (ASTM) A992 |