Transcription of LRFD Column Load Tables - cousesteel.com
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LRFD Column Load Tables - cousesteel.com
LRFDC olumnLoad TablesHSS2 Electric Resistance Welding (ERW) ProcessIn the tube mill, flat steel strip (1) is formed continuously around itslongitudinal axis to produce a round tube. This is done by moving thestrip through a progressive set of rolls (2-6). The strip edges (7) areheated by either high frequency induction or contact welding and thenforged together by weld rolls to create a continuous longitudinal weldwithout the addition of filler metal. The weld seam (8) is then cooledand processed through a set of sizing/shaping rolls which cold-form itinto a round (9), square (10) or rectangular (11) Weld-Square (ERW) ProcessIn the weld mill, driven forming dies progressively shape the flat strip(1) by forming the top two corners (2) of the square or rectangular tubein the initial forming station.
How To Use The Column Load Tables Example 1 Design the lightest 6-inch square ERW HSS column of F y = 46 ksi (ASTM A500 Gr. B) to support a factored concentric load of 148 kips. The largest effective length, KL, is 16 feet. Enter the Fy = 46 ksi table (page 9) for the 6-inch square ERW HSS. Read across the row at KL = 16 ft. and note the following:
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