The upper column splice steel assembly connects an HSS4x4x3/16 hollow structural section column above to a 1-inch plate matching the column size, utilizing a 3/8-inch knife plate welded with 1/4-inch fillet welds. The lower column splice assembly connects an HSS5x0.500 hollow structural section column to a 1-inch plate matching the reduced column size below, secured with 3/4-inch by 4-inch smooth steel dowels and 5/16-inch and 1/4-inch fillet welds.
HSS5x0.500 1 1/2" 4" 4" 7 1/8" LOWER COL. SPLICE STEEL ASSEMBLY UPPER COL. SPLICE STEEL ASSEMBLY 1" PL MATCHING REDUCED COL. SIZE BELOW 5/16 1/4 2" EACH SIDE OF HSS 1/4 1/4 HSS4x4x3/16 1" PL MATCHING COL. SIZE ABOVE 3/4"x4" SMOOTH STEEL DOWELS 1/4 3/8" KNIFE PL.. 2" 2" 2" 2" 5"
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