56 



CAMBRIA STEEL. 



STANDARD CONNECTION ANGLES FOR 

 I-BEAMS AND CHANNELS. 



Standard connection angles for all sizes of beams and channels 

 are shown on page 53. These are of sufficient strength for all usual 

 connections of the various sizes shown, figured on the basis of 

 24 inch rivets or bolts and the following allowable unit stresses 

 in pounds per square inch. 



In cases where beams frame opposite, the web between out- 

 standing legs of standard connection angles should not be less 

 than $/& inch thick. 



When beams of very short spans are loaded to their full capac- 

 ity, the end shear or reaction which has to be transmitted through 

 the connections becomes so great that stronger connections than 

 the standard should be used. 



The following tables give the limits of length below which the 

 standard connections do not apply and for which special designs 

 should be made. For all lengths greater than those given in the 

 tables the standard connections are sufficiently strong. 



MINIMUM SPANS OF CHANNELS FOR LIMITING 

 VALUES OF STANDARD CONNECTION ANGLES. 



