. Practical structural design; a text and reference work for engineers, architects, builders, draftsmen and technical schools;. )\hU-- Fig. 176 — Eccentric Load on Column Bases then X = W Let h = length of base (that is, the dimension at right angle tothe force H, the dimension B being in the directionof the force H).p = pressure on soil in pounds per sq. ft., all the dimensionsbeing expressed in feet and the weight and wind forcein pounds;then, when the resultant falls within the middle third, W V = bB (B ± Qx). When the resultant falls beyond the middle third 2w V = 36c COLUMNS AND STRUCTURE
. Practical structural design; a text and reference work for engineers, architects, builders, draftsmen and technical schools;. )\hU-- Fig. 176 — Eccentric Load on Column Bases then X = W Let h = length of base (that is, the dimension at right angle tothe force H, the dimension B being in the directionof the force H).p = pressure on soil in pounds per sq. ft., all the dimensionsbeing expressed in feet and the weight and wind forcein pounds;then, when the resultant falls within the middle third, W V = bB (B ± Qx). When the resultant falls beyond the middle third 2w V = 36c COLUMNS AND STRUCTURES 275 c o 9^/ W^/, n w/y//^ TZv/// B ? o o i<- ; < ^i The student should study the formation of the last threeformulas. The first one means that a force i7, acting with anarm /i, tends to overturn a body having a weight W. It is,therefore, necessary to find the length of an arm x, through whichW acts to resist the overturning moment Rh. In the second the distance x cannot be greater than one-sixthof B. The total weight is distributed over an area Bh. Withthese hints the student should attempt to construct the f
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Keywords: ., bookcentury1900, bookdecade1920, bookidpracticalstr, bookyear1921
