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JOHN C. KOCH 



the distance from the axis A-A to the center of gravity of each 

 strip. Column 4 gives the product of each area by its distance 

 from the axis. Column 5 gives the static moment of all the 

 areas that lie beyond the strip, opposite which the static mo- 

 ments are tabulated. Column 6 is the width or thickness of the 

 shearing plane as scaled from figure 11. Column 7 gives the 



TABLE 2 

 Computation of shear factors, Q, for a circular cross section, 2 inches in diameter 



products of r^, a constant for a given cross section, by t; for a 

 circular cross section r^ = d^/lQ. If d (the diameter) is ex- 

 pressed in twentieths of an inch, we have r- = 40V16 = 100. 

 Hence r'^t = lOOt. Column 8 gives the values of Q, the factor 

 by which the average vertical shear at any cross section must 

 be multiplied to give the amount of the true horizontal shear 



