WE ARE RELOCATING EXISTING COLUMNS ON A TRANSIT STRUCTURE. THE EXIST. COLUMNS ARE DIRECTLY BELOW THE END OF THE GIRDERS. THE CONTRACT DOCS HAVE US INSTALLING NEW COLUMNS CONNECTED TO THE GIRDER END FOLLOWED BY REMOVAL OF THE OLD COLUMN. THE HEAVIEST COLUMN DEAD LOAD IS AROUND 275K. ONCE THE NEW...
I AM ESTIMATING A PROJECT WITH A SECURITY FENCE THAT CALLS OUT THE POSTS TO BE 4.5" DIA AND 5" DIA x 3/8" WALL THICKNESS AND GRADE 50 YIELD STEEL. THE SPEC SAYS USE HDGALV PIPE CONFORMING TO ASTM F1043. I CAN'T FIND A STEEL PIPE PRODUCT THAT MEETS ALL THESE CRITERIA. I CAN FIND X-STRONG 5" PIPE...
I AM WORKING ON A DESIGN WHEREBY THE ARCHITECT IS REMOVING 18' OF INTERIOR BEARING WALL AND REPLACING IT WITH A STEEL BEAM. SUPPORTING 2ND FLOOR AND CEILING FRAMING. THE ARCHITECT WOULD LIKE TO USE A TS4X4 (APPROX. 16' TO BASEMENT FOOTING). A SIMPLY CONNECTED BEAM SITTING ON TOP OF A POST CAP PL...
