98 



CAMBRIA STEEL. 



COEFFICIENTS FOR DEFLECTION IN INCHES FOR 



CAMBRIA SHAPES, USED AS BEAMS SUBJECTED 



TO SAFE LOADS UNIFORMLY DISTRIBUTED. 



The above coefficients are for use in obtaining the deflection of steel 

 shapes subjected to transverse strain, under their uniformly distributed 

 safe loads for extreme fibre stresses of 16 000 pounds and 12 500 pounds 

 per square inch; the modulus of elasticity being 29 000 000. 



To find the deflection of any shape that is symmetrical about its 

 neutral axis under the above conditions of loading when used as a 

 beam, such as I-Beams, Channels, etc., divide the coefficient in the 

 table corresponding to the given span and fibre stress, by the depth of 

 the beam in inches. The result will be the deflection in inches. 



To find the deflection of any shape that is unsymmetrical about its 

 neutral axis when used as a beam, under the above conditions of load- 

 ing, such as Angles, etc., divide the coefficient in the table correspond- 

 ing to the given span and fibre stress by twice the distance of the 

 most remote fibre from the neutral axis, expressed in inches. 



If, in construction, the beam is placed in position in the usual manner 

 upon its end supports without special scaffolding or falsework between 

 them, it will deflect somewhat by reason of its own weight, and upon 

 the addition of external loading a further deflection will occur. 



The deflections obtained as above described are the total deflections 

 due to the weight of the beam itself and the superimposed safe load 

 uniformly distributed. 



