74 NOTES OX PLATE-GIRDEB DESIGN 



14n. Compute the forrjining table u; 



14/. Compute the maximum // end .-hear for one girder of I 

 effective i.-r bndp . T*Q girders carry . 



track. ( K J0 . 



ART. 15. TABLE OF MOMENTS, SHEARS AND CONCENTRATED 

 LOADS FOR COOPER'S E* 



The method of writing equations for bending inoim 

 of An. 11 need not he followed for span- .,)' long. 



For spans ov-r :{()' in length the inaxiinuin center moment 

 is only a small fraction of nne per cent. le>s than the 

 absolute inaxiinuin moment. The following tal>le L r ive> a 

 convenient arrangement of the quantities for spans up lo 

 Mective length. 



For through spans ial.le< of moments at the panel 

 points and .-hears in all the panels for varying number 

 of panels and panel length are readily prepared and should 

 be made for any loading as much used as Cooper's systems. 



'.S E M . 



16^. Compute the livr ]o:ul corM-ciiinitidii for a Irvsilr hcnt which 

 <-:irri<-s atljacciit sp:ui< of W MIK! (i()'. Show ly a skrtrh the position 

 of 



16^'. Compute the maximum center moment for :i 6(X span. Show- 

 by sketch the position of In 



15r. Compute the maximum shear at the center of a 00' span. 

 l.y sk.-tch the position of \< 



!&/. Compute the maximum shear at a point l.V from one end of 

 a W span. Show by sketch the position of the lo. 



