screwman - thanks. I have 12 columns to replace at 5' o.c. My thoughts were that since rotation of the nut translates into an exact rise along the thread I would therefore know the strain that is being imposed on the column and from that the stress and load transfer. I just think its prudent to...
I work for the contractor. The replacement columns and base plates are already designed and fabricated per the drawings (3" thick base plates, W36x300 columns). Before the exist. column is cut out, the new column base plate will be grouted solid with non-shrink grout and strength achieved. I...
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 a Structural Engineer however I don't typically work with residential framing. I understand that bracing columns in both directions is always critical. I am just not sure if it is common practice to rely on the house floors and walls to provide stability support (no external lateral forces...
Thanks, the top flange of the beam will be braced to the wood floor joists at 4'oc. It is an old house with t&g flooring & wall sheathing on a diagonal so I am not sure if that will provide adaquate diaphragm and shear wall action. The load is just residential gravity load.
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...
