USEFUL DATA 



Values of K may be obtained from Diagrams 1, 2 and 3. 

 Notation. The following notation has been adopted in the formulas: 

 PtP = Concentrated loads in pounds, or^if 



w = Superimposed load in pounds per ftapt length of beam or slab. 



W = Superimposed load supported by beam or slab in pounds. 



/ = Length of beam in feet. 



L = Length of beam in inches. 

 fli, Ri = Reactions at supports of beam, in pounds. 



Fx = Total transverse shear in pounds, at distance x. 



Fm = Total maximum transverse shear in pounds. 



Mm = Maximum positive external bending moment in foot-pounds. 



J/'m = Maximum negative external bending moment in foot-pounds. 



Xo = Distance in feet to point of zero shear^ or to 3/ra. 

 m ^^= Maximum safe load in pounds per ^et length of beam or slab for load 

 distribution indicated in each case. 



Pm = Maximum safe concentrated load in pounds. 



/ = Working unit-stress in flexure, in pounds per square inch. (This does not 

 apply to reinforced concrete beams.) 



/ = Moment of inertia of cross-section in inches*. 



S = Section modulus of cross-section in inches'. 



(This does not apply to reinforced concrete beams.) 



D — Maximum deflection in inches. 



y = Distance in feet to point of maximum deflection D. 



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