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h <br />t <br />- I - h <br />Pultez(k Standard Structural Profiles <br />Square Tubes <br />4" x 4" x 1/4" (Part # TQ 440) <br />1500/1525/1625 Series <br />Ultimate In -Plane Shear Strength (psi) 7,000 <br />Ultimate Flexural Strength (psi) 33,000 <br />Ultimate Local Buckling Strength (psi) 17,791 <br />Simply Supported beam with <br />Uniform Loads at various <br />L/D ratios (Ibs/ft) <br />E=3.2x106 psi G=4.2x10' psi <br />1,= 8.75 in° S,= 4.37 in <br />A,,.=2.0 in Wt.=2.96 Ibs/ft <br />Simply Supported with a Uniform Load <br />Laterally Supported beams <br />L/D ratio <br />Span <br />feet <br />Allowable <br />load, local <br />compression <br />buckling <br />capacity, 2.5x <br />Safety Factor <br />(Ibs/ft) <br />Allowable <br />load, <br />flexural <br />capacity, <br />2.5x Safety <br />Factor <br />Ibs/ft <br />Allowable load, <br />In -plane shear <br />of the web <br />capacity, 3x <br />Safety Factor <br />(Ibs/ft) <br />100 <br />1 150 <br />180 <br />240 <br />1 360 <br />3 <br />2304 <br />4273 <br />3111 <br />1848 <br />1232 <br />4 <br />1296 <br />2404 <br />2333 <br />1138 <br />854 <br />569 <br />5 <br />829 <br />1538 <br />1867 <br />610 <br />457 <br />305 <br />6 <br />5761 <br />1068 <br />1556 <br />434 <br />362 <br />271 <br />18 <br />7 <br />423 <br />785 <br />1333 <br />416 <br />278 <br />231 <br />174 <br />116 <br />8 <br />324 <br />601 <br />1167 <br />282 <br />188 <br />157 <br />117 <br />78 <br />9 <br />256 <br />475 <br />1037 <br />199 <br />133 <br />III <br />83 <br />55 <br />10 <br />207 <br />385 <br />933 <br />146 <br />97 <br />81 <br />61 <br />41 <br />11 <br />171 <br />318 <br />848 <br />110 <br />73 <br />61 <br />46 <br />31 <br />12 <br />1441 <br />267 <br />7781 <br />85 <br />571 <br />47 <br />35 <br />24 <br />Note: Bold numbers in the Factored Load Tables represent the governing load <br />74 <br />The New and Improved Pultex` PuWuusion Design Manual <br />Chapter 4 <br />011 <br />